CN202661385U - Monitoring device for on-line monitoring on content of various heavy metals in water - Google Patents
Monitoring device for on-line monitoring on content of various heavy metals in water Download PDFInfo
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- CN202661385U CN202661385U CN 201220219931 CN201220219931U CN202661385U CN 202661385 U CN202661385 U CN 202661385U CN 201220219931 CN201220219931 CN 201220219931 CN 201220219931 U CN201220219931 U CN 201220219931U CN 202661385 U CN202661385 U CN 202661385U
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Abstract
The utility model relates to a monitoring device for on-line monitoring on content of various heavy metals in water. The device comprises a control system, a sampling system and a measuring system which are connected two by two; the sampling system comprises a sampling pump system, a quantification system and a multi-channel sample introduction system which are orderly connected; the measuring system comprises a measuring light source, an optical detection device, a reaction tank and a colorimetric tank, wherein the shell of the colorimetric tank is provided with an incoming hole and an outgoing hole, and the measuring light source and the optical detection device are respectively arranged corresponding to the incoming hole and the outgoing hole of the colorimetric tank; and the measuring light source is a multi-wavelength light source or a continuous wavelength light source, and the optical device is an optical sensor or a spectrograph with beam splitting function. With the monitoring device, the contents of various different heavy metals in water can be orderly determined on one instrument; by software settings, the measurement precision is improved under control of the quantification system; the cost is reduced, the monitoring efficiency is improved greatly, the space for mounting the monitoring device is reduced, and users can voluntarily select monitoring items according to own needs.
Description
Technical field
The utility model belongs to by means of the chemistry of measuring material or physical property is tested or the technical field of analysis of material, be particularly related to a kind of optical method that utilizes, it is measurement light source that multi wave length illuminating source or continuous wavelength light source are set, optical sensor or the spectrometer with light splitting function are optical detection apparatus, satisfy any multiple different heavy metal element after reacting with component to be measured with suitable chromogenic reagent and the variation comparison of the maximum absorption wavelength light intensity that sets measures the monitoring device of various heavy content in the on-line monitoring water body of content of this heavy metal contaminants in the water sample with Real-time Measuring.
Background technology
Heavy metal refers to that proportion is greater than 5 metal, in human body, accumulate and acquire a certain degree, can cause slow poisoning, wherein to the plumbous Pb of having of harm maximum, mercury Hg, cadmium Cd, chromium Cr, arsenic As etc., this five heavy metal species is defined as at present domestic the most serious and in the urgent need to the heavy metal element of monitor closely.These heavy metals can not be decomposed in water, if do not have perfect monitoring mechanism, tight monitoring equipment, heavy metal is absorbed in biological meeting from environment, and the biological magnification of process food chain, enrichment in the higher organisms body, be converted into the stronger metallic compound of toxicity, finally enter human body by food, be detrimental to health.Well-known minamata disease (mercury pollution) and Itai-itai diseases (cadmium pollution) are exactly to be caused by heavy metal pollution.Therefore, very urgent to the control of heavy metal, and heavy metal pollution is the present the most serious and the most in the urgent need to address problem of all heavy metal pollutions in the water, the control of heavy metal again must be take the monitoring of heavy metal as top priority in the water.
Stipulated the detection method of each Heavy Metallic Elements in the water in the national standard, domestic and foreign literature also has relevant statement to this.That extensively adopts in the prior art mainly contains spectrophotometric method, atomic absorption spectrography (AAS), electrochemical process and atomic fluorescence method etc.Wherein spectrophotometric method can be measured the content of heavy metal in the various water, the method is because simple to operate, qualitative, quantitatively accurate, and high with the degree of conformity of national standard and industry standard, therefore be widely used in content of beary metal in experimental determination and the on-line monitoring water, but the method cause on-line monitoring equipment can only measure the content of a heavy metal species owing to can produce the phase mutual interference between the each color difference of chromogenic reaction and reagent at every turn, and efficient is lower.For atomic absorption spectrography (AAS) and atomic fluorescence method, because the difference of the chemical property of heavy metal to be measured own and the pretreated complexity of water sample are measured in water content of beary metal and only be fit to be applied to the laboratory in the hand sampling mode so that this two kinds of methods itself just can't be applied to on-line monitoring.Electrochemical process is the present another kind of important method that is widely used in content of beary metal in the on-line monitoring water except photometry, independent most of heavy metal substance in the on-line determination water, also can measure simultaneously several specific heavy metal substances, such as lead, cadmium, copper, but for thinking that the demand that arbitrarily makes up heavy metal in the multiple water of while on-line determination then can not realize.
The utility model content
The technical matters that the utility model solves is, because it is reliable that prior art can't be taken into account the live effect of monitoring cost and monitoring, and the user one who causes can't choose at random according to the characteristics of self water quality the quantity of the heavy metal factor of needs monitoring, two need many monitoring instruments when a plurality of factor to be measured of needs monitoring, high expensive, and need a large amount of spaces to put, even the three disposable content that monitor various heavy, its monitoring accuracy also can't satisfy the problem that the monitoring of the pollution source water quality heavy metal concentration that State Bureau of Environmental Protection proposes requires, and then the monitoring device of various heavy content in a kind of on-line monitoring water body is provided.
The technical scheme that the utility model adopts is, the monitoring device of various heavy content in a kind of on-line monitoring water body, comprise the control system, sampling system and the measuring system that connect in twos, described sampling system comprises sampling pump system, quantitative system and the hyperchannel sampling system that connects in turn, described measuring system comprises measurement light source, optical detection apparatus, reaction tank and colorimetric pool, the shell of described colorimetric pool is provided with into perforation and perforation hole, described measurement light source, optical detection apparatus respectively with colorimetric pool enter perforation and the corresponding setting of perforation hole; Described measurement light source is multi wave length illuminating source or continuous wavelength light source, and described optical detection apparatus is optical sensor or spectrometer with light splitting function.
Preferably, described measurement light source comprises that optical splitter or described measurement light source are the rotating light source apparatus.
Preferably, described quantitative system comprises and is no less than 2 quantity tubes to be furnished with one group of corresponding light source and optical receiver that arranges on described every quantity tube, and the described corresponding light source that arranges is connected with control system with optical receiver.
Preferably, described quantitative system comprises the first quantity tube and the second quantity tube, and described the first quantity tube correspondence disposes the first light source and the first optical receiver, and described the second quantity tube correspondence disposes secondary light source and the second optical receiver.
Preferably, described quantitative system also comprises reaction tank sample intake passage and colorimetric pool sample intake passage, and described reaction tank sample intake passage is connected the solenoid valve group and is connected with reaction tank and colorimetric pool respectively with the colorimetric pool sample intake passage.
Preferably, described measurement light source, optical detection apparatus are connected with perforation hole with the perforation that enters of colorimetric pool respectively by optical fiber.
Preferably, described hyperchannel sampling system comprises some titer passages, some reagent passage and water sample passage to be measured, and described some titer passages, some reagent passage and the water sample passage of being connected are connected with quantitative system by the solenoid valve group.
Preferably, described sampling pump system comprises sampling pump, and described sampling pump is connected by the buffering pipeline with quantity tube.
Preferably, be provided with heating arrangement in the described reaction tank, described heating arrangement is connected with control system.
Preferably, be provided with pumping equipment in the described colorimetric pool, described pumping equipment is connected with control system.
The utility model provides the monitoring device of various heavy content in a kind of on-line monitoring water body, by utilize optical method that the light source that a plurality of wavelength can be provided is set in monitoring device or provide continuous wavelength light source measurement light source and can measure the optical sensor of the multiple incident light intensity that described measurement light source provides or have the optical detection apparatus of the spectrometer of light splitting function, can measure the content of certain heavy metal species in the water sample to be measured after chromogenic reaction is stable by the variation of measuring the maximum absorption wavelength light intensity that sets in advance, after recording the content of a heavy metal contaminants, enter colorimetric pool and repeat the content that observation process is measured next heavy metal species by solution after the reaction of quantitative system control section again; The utility model can be on an instrument content of heavy metal substance in the multiple different water of sequentially determining, and all arrange in advance by software, realize that same instrument measure a plurality of content of beary metal in the water simultaneously, control by quantitative system has improved the precision of measuring, reduce cost, greatly improve monitoring efficient, reduced the required space that takies of erecting equipment, and can select voluntarily the project of monitoring according to client's needs.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is structured flowchart of the present utility model.
Embodiment
Below in conjunction with embodiment the utility model is described in further detail, but protection domain of the present utility model is not limited to this.
As shown in the figure, the utility model relates to the monitoring device of various heavy content in a kind of on-line monitoring water body, comprise the control system, sampling system and the measuring system that connect in twos, described sampling system comprises sampling pump system, quantitative system and the hyperchannel sampling system that connects in turn, described measuring system comprises measurement light source 1, optical detection apparatus 2, reaction tank 3 and colorimetric pool 4, the shell 5 of described colorimetric pool 4 is provided with into perforation 6 and perforation hole 7, described measurement light source 1, optical detection apparatus 2 respectively with colorimetric pool 4 enter perforation 6 and perforation hole 7 corresponding settings; Described measurement light source 1 is multi wave length illuminating source or continuous wavelength light source, and described optical detection apparatus 2 is optical sensor or spectrometer with light splitting function.
In the utility model, optical detection apparatus 2 adopts the optical sensor with incident light source that complete response measurement light source 1 launches.
In the utility model, described measurement light source 1 can often be opened or just open when needs use.
In the utility model, the actual proterties of light source in the actual mechanical process is depended in the switching of measurement light source 1.
Described measurement light source 1 comprises that optical splitter or described measurement light source 1 are the rotating light source apparatus.
Described quantitative system comprises and is no less than 2 quantity tubes to be furnished with one group of corresponding light source and optical receiver that arranges on described every quantity tube, and the described corresponding light source that arranges is connected with control system with optical receiver.
In the utility model, carry out quantitative liquid bulk product by quantitative system and controlled by the light source and the optical receiver that are used for quantitative some pairing usefulness that arrange on the quantity tube.By treating light intensity that quantitative solution makes light source be transmitted into optical receiver when flowing changes to determine whether solution continues to flow or static in quantity tube, thus the volume of definite solution.
Described quantitative system comprises the first quantity tube 8 and the second quantity tube 9, and described the first quantity tube 8 correspondences dispose the first light source 10 and the first optical receiver 11, and described the second quantity tube 9 correspondences dispose secondary light source 12 and the second optical receiver 13.
Described quantitative system also comprises reaction tank sample intake passage 14 and colorimetric pool sample intake passage 15, and described reaction tank sample intake passage 14 is connected with the colorimetric pool sample intake passage and is connected with reaction tank 3 and colorimetric pool 4 respectively by solenoid valve group 16.
Described measurement light source 1, optical detection apparatus 2 are connected with perforation hole and are connected with the perforation 6 of entering of colorimetric pool 4 respectively by optical fiber 17.
In the utility model, measurement light source 1, optical detection apparatus 2 also can not pass through optical fiber 17, directly are located at respectively into perforation 6 and perforation hole 7 places.
Described hyperchannel sampling system comprises some titer passages 18, some reagent passage 19 and water sample passage 20 to be measured, and described some titer passages 18, some reagent passage 19 and the water sample passage 20 of being connected are connected with quantitative system by solenoid valve group 16.
Described sampling pump system comprises sampling pump 21, and described sampling pump 21 is connected by buffering pipeline 22 with quantity tube.
Be provided with heating arrangement 23 in the described reaction tank 3, described heating arrangement 23 is connected with control system.
Be provided with pumping equipment in the described colorimetric pool 4, described pumping equipment is connected with control system.
In the utility model, it is for after the measurement of the content that has carried out a heavy metal species that pumping equipment is set in the colorimetric pool 4, the solution in the colorimetric pool 4 can be discharged conveniently to carry out the colorimetric measurement of next heavy metal species rapidly.
In the utility model, the principle of work of the method for various heavy content is in the on-line monitoring water body: utilize optical method, and arrange and be no less than 2 quantity tubes, every quantity tube is equipped with one group of corresponding light source and optical receiver that arranges, by controlling different quantity tubes to the extraction of different solutions, so that every a collection of water sample to be measured can react with suitable reaction reagent and chromogenic reagent, then measure the content of a few heavy metal species pollutants in the water sample with Real-time Measuring with the variation comparison of the maximum absorption wavelength light intensity that sets.
In the utility model, utilize the monitoring device realization of various heavy content in the on-line monitoring water body as follows to the workflow of the monitoring of various heavy content:
The first step, control system resets, and sets as required N the heavy metal number of measuring content, N 〉=1; Set temperature of reaction T, set reaction time t1, set colorimetric time t2; Determine the selection of hyperchannel sampling system Plays liquid passage 18, reagent passage 19 and water sample passage 20 to be measured; Determine the number of solenoid valve in the solenoid valve group 16.
Second step, by water sample passage 20 to be measured, by control system control sampling pump system, the sampling pump system is by the first quantity tube 8 control samplings in the quantitative system, and open on the solenoid valve group 16 valve roads of water sample passage 20 to be measured, and it is to be measured to get water sample A to be measured.
In the 3rd step, by control system control sampling pump system, the sampling pump system pushes reaction tank 3 with sample A and enters the stage of reaction, control system control heating arrangement 23 so that temperature of reaction to setting value T; Behind the reaction certain hour t1, stop the control to temperature of reaction T, and make temperature of reaction T be reduced to environment temperature, obtain reactant liquor B; When measuring process needs oxygenant together to react, by control system control sampling pump system, the sampling pump system is by the first quantity tube 8 control samplings in the quantitative system, and open on the solenoid valve group 16 valve roads of reagent passage 19, adds reaction tank 3 after getting quantitative oxygenant; Behind the reaction certain hour t1, finish temperature control and make reaction tank 3 temperature be reduced to environment temperature, if added a certain amount of oxygenant in the course of reaction, by control system control sampling pump system, the sampling pump system is by the first quantity tube 8 control samplings in the quantitative system, open on the solenoid valve group 16 valve roads of reagent passage 19, gets to add reaction tank 3 behind the quantitative reductive agent, finally obtains reactant liquor B.
In the 4th step, by control system control sampling pump system, the sampling pump system is by the second quantity tube 9 controls in the quantitative system, and the volume reactant liquor B with reacting after finishing pushes colorimetric pool 4; By reagent passage 19, by control system control sampling pump system, the sampling pump system is by the second quantity tube 9 controls in the quantitative system, open on the solenoid valve group 16 valve roads of reagent passage 19, get quantitative buffer solution, screening agent, characteristic developer and push colorimetric pool 4, obtain color solution C so that reactant liquor B reacts with quantitative buffer solution, screening agent, characteristic developer successively; Reaction time required behind each EOS can be set by control system.
The 5th step, after previous step is stablized t2, start measurement light source 1, described measurement light source 1 provides the light source of a plurality of wavelength or the light source of continuous wavelength is provided, adopt the light contrast colors liquid C of specific wavelength to carry out absorbance measuring, produce intensity variation, optical detection apparatus 2 measured light intensity change, and the optical sensor of the N kind incident light intensity that can measure described measurement light source 1 and provide or the spectrometer with light splitting function are provided described optical detection apparatus 2; After control system recorded the content of heavy metal contaminants corresponding to the light of specific wavelength in the water sample to be measured, the content of beary metal that the light of this wavelength is corresponding was measured and is finished.
In the 6th step, the pumping equipment in the control system control colorimetric pool 4 is discharged color solution C.
In the 7th step, when also having other content of beary metal to measure, begin to repeat following steps by the 4th step, until finish.
Generally speaking, if without standard value, then also need the content of each heavy metal value in the bioassay standard liquid, flow process is as follows:
The first step, control system resets, and sets as required N the heavy metal number of measuring content, N 〉=1; Set temperature of reaction T, set reaction time t1, set colorimetric time t2; Determine the selection of hyperchannel sampling system Plays liquid passage 18, reagent passage 19 and water sample passage 20 to be measured; Determine the number of solenoid valve in the solenoid valve group 16.
Second step, by titer passage 18, by control system control sampling pump system, the sampling pump system is by the first quantity tube 8 control samplings in the quantitative system, and open on the solenoid valve group 16 valve roads of titer passage 18, and it is to be measured to get titer sample A to be measured.
In the 3rd step, by control system control sampling pump system, the sampling pump system pushes reaction tank 3 with sample A and enters the stage of reaction, control system control heating arrangement 23 so that temperature of reaction to setting value T; Behind the reaction certain hour t1, stop the control to temperature of reaction T, and make temperature of reaction T be reduced to environment temperature, obtain reactant liquor B; When measuring process needs oxygenant together to react, by control system control sampling pump system, the sampling pump system is by the first quantity tube 8 control samplings in the quantitative system, and open on the solenoid valve group 16 valve roads of reagent passage 19, adds reaction tank 3 after getting quantitative oxygenant; Behind the reaction certain hour t1, finish temperature control and make reaction tank 3 temperature be reduced to environment temperature, if added a certain amount of oxygenant in the course of reaction, by control system control sampling pump system, the sampling pump system is by the first quantity tube 8 control samplings in the quantitative system, open on the solenoid valve group 16 valve roads of reagent passage 19, gets to add reaction tank 3 behind the quantitative reductive agent, finally obtains reactant liquor B.
In the 4th step, by control system control sampling pump system, the sampling pump system is by the second quantity tube 9 controls in the quantitative system, and the volume reactant liquor B with reacting after finishing pushes colorimetric pool 4; By reagent passage 19, by control system control sampling pump system, the sampling pump system is by the second quantity tube 9 controls in the quantitative system, open on the solenoid valve group 16 valve roads of reagent passage 19, get quantitative buffer solution, screening agent, characteristic developer and push colorimetric pool 4, obtain color solution C so that reactant liquor B reacts with quantitative buffer solution, screening agent, characteristic developer successively; Reaction time required behind each EOS can be set by control system.
The 5th step, after previous step is stablized t2, start measurement light source 1, described measurement light source 1 provides the light source of a plurality of wavelength or the light source of continuous wavelength is provided, adopt the light contrast colors liquid C of specific wavelength to carry out absorbance measuring, produce intensity variation, optical detection apparatus 2 measured light intensity change, and the optical sensor of the N kind incident light intensity that can measure described measurement light source 1 and provide or the spectrometer with light splitting function are provided described optical detection apparatus 2; After control system recorded the content of heavy metal contaminants corresponding to the light of specific wavelength in the titer water sample, the content of beary metal that the light of this wavelength is corresponding was measured and is finished.
In the 6th step, the pumping equipment in the control system control colorimetric pool 4 is discharged color solution C.
In the 7th step, when also having other content of beary metal to measure, begin to repeat following steps by the 4th step, until finish.
The utility model embodiment 1:
Adopt the method for various heavy content in the on-line monitoring water body of the present utility model and monitoring device to measure simultaneously in certain Electroplate Factory's Sewage outlet the content of total chromium and total nickel in the water.The colorimetric measurement wavelength is chosen as respectively total chromium and measures at 540nm, total nickel is measured at 520nm, measurement light source 1 send have continuous wavelength can through the optical splitter light splitting produce respectively the incident light source of 540nm and 520nm or send respectively the monochromatic source of 540nm and 520nm and by the rotating light source apparatus to realize the switching of light source; The monochromatic light that measurement light source 1 produces by optical fiber 17 from entering perforation 6 vertical irradiations to colorimetric pool 4, outgoing light source by colorimetric pool 4 shines the variation that optical detection apparatus 2 is measured light intensity from perforation hole 7 via optical fiber 17, temperature of reaction is set as 60 degrees centigrade, reaction time is set as 4 minutes, the colorimetric time is made as 1 minute, reagent type number on the reaction tank sample intake passage 14 is set as 3 kinds, and the reagent type on the colorimetric pool sample intake passage 15 is set as 4 kinds.
Startup was measured after setting was finished, by water sample passage 20 to be measured, the sampling of control system control sampling system, sampling pump 21 is got two volumes water sample to be measured by the first light source 10 that is used for quantitative pairing use and 11 controls of the first optical receiver of setting on the first quantity tube 8 in the quantitative system, and water sample pushes reaction tank 3 by cushioning pipeline 22 with it through switching by sampling pump 21 by the solenoid valve group 16 valve roads of reaction tank sample intake passage 14 after quantitative again; Then sampling system is taken into reaction tank 3 after by reagent passage 19 that liquor potassic permanganate (oxygenant) is quantitative in the mode same with getting water sample to be measured, start the temperature control program by temperature of reaction to 60 degree of heating arrangement 23 control reaction tanks 3, react after 4 minutes, finish temperature control and make reaction tank 3 temperature be reduced to environment temperature, then sampling system is taken into reaction tank 3 after respectively sodium nitrite solution and urea liquid (reductive agent) is quantitative by the first quantity tube 8 successively by reagent passage 19 in the mode same with getting water sample to be measured, reactant liquor in the reaction tank 3 after control system will be reacted and be finished is divided into two parts, sampling system with the mode same with getting water sample to be measured get a volume wherein through the solenoid valve group 16 valve roads of colorimetric pool sample intake passage 15 switch enter the second quantity tube 9 of the colorimetric pool sample intake passage 15 in the quantitative system and by the second quantity tube 9 on the secondary light source 12 that is used for quantitative some pairing usefulness that arranges and the second optical receiver 13 be taken into colorimetric pool 4 after controlling quantitatively, then sampling system is switched through the solenoid valve group 16 valve roads of colorimetric pool sample intake passage 15 by reagent passage 19 in the mode same with getting water sample to be measured and developer diphenylcarbazide solution is taken into colorimetric pool 4 by the second quantity tube 9 after is quantitatively carried out chromogenic reaction, after finishing in 1 minute, developing time adopt the light of 540nm wavelength to carry out absorbance measuring, just can measure the content of total chromium in the water sample according to the variation of light intensity before and after the colour developing, total chrome content was measured and was finished this moment, and all solution in the colorimetric pool 4 are discharged in control system control.
Carry out subsequently same program, at first sampling system another volumetric reaction liquid that will react in the reaction tank 3 after finishing in the mode same with getting water sample to be measured switches the second quantity tube 9 that enters the colorimetric pool sample intake passage 15 in the quantitative system through the solenoid valve group 16 valve roads of colorimetric pool sample intake passage 15, and be taken into colorimetric pool 4 after controlling quantitatively by the secondary light source 12 that is used for quantitative some pairing usefulness that arranges on the second quantity tube 9 and the second optical receiver 13, then sampling system is switched successively with ammonium citrate solution (buffer solution) through the solenoid valve group 16 valve roads of colorimetric pool sample intake passage 15 by reagent passage 19 in the mode same with getting water sample to be measured, iodine solution (screening agent) is taken into colorimetric pool 4 by the second quantity tube 9 after quantitatively, last sampling system is switched through the solenoid valve group 16 valve roads of colorimetric pool sample intake passage 15 by reagent passage 19 and developer dimethylglyoxime solution is taken into colorimetric pool 4 by the second quantity tube 9 after is quantitatively carried out chromogenic reaction, after finishing in 1 minute, developing time adopt the light of 520nm wavelength to carry out absorbance measuring, just can measure the content of total nickel in the water sample according to the variation of light intensity before and after the colour developing, this moment, total nickel assay finished, and all solution in the colorimetric pool 4 are discharged in control system control.
So far, measuring simultaneously online of total chromium, total nickel finishes, and sampling system is discharged all solution in the reaction tank 3.
Above-mentioned optical method is measured and need to be demarcated in advance with standard solution, calibration process is identical with measuring process, the titer passage 18 of monitoring device comprises the first titer passage and the second titer passage, then start calibrating procedure, its implementation is identical with measuring process, can realize calibration process by the measurement of the titer in the titer passage 18 being carried out each content of beary metal, can produce respectively total chromium and total two groups of calibration factors of nickel after demarcation is finished, these two groups of calibration factors are used for respectively calculating always chromium and the always actual content of nickel in the water sample to be measured after chromogenic reaction finishes and measures absorbance in measuring process.
The utility model embodiment 2:
Adopt the method for various heavy content in the on-line monitoring water body of the present utility model and monitoring device to measure simultaneously in certain metal smelting factory sewage floss hole total lead in the water, total mercury, the total content of cadmium.The colorimetric measurement wavelength is chosen as respectively total mercury and measures at 485nm, total lead is measured at 510nm, total cadmium is measured at 518nm, measurement light source 1 is for having xenon lamp or the mercury lamp of continuous wavelength, optical monitoring device 2 is spectrometer, the light that measurement light source 1 produces by optical fiber 17 from entering perforation 6 vertical irradiations to colorimetric pool 4, outgoing light source by colorimetric pool 4 shines the variation that spectrometer with light splitting function and light intensity measuring ability is measured light intensity from perforation hole 7 via optical fiber 17, temperature of reaction is set as 100 degrees centigrade, reaction time is set as 10 minutes, the colorimetric time is made as 5 minutes, reagent type number on the reaction tank sample intake passage 14 is set as 2 kinds, and the reagent type on the colorimetric pool sample intake passage 15 is set as 5 kinds.
Startup was measured after setting was finished, by water sample passage 20 to be measured, by the sampling pump 21 in the control system control sampling system, sampling pump 21 is got three volumes water sample to be measured by the first light source 10 that is used for quantitative some pairings uses and 11 controls of the first optical receiver that arrange on the first quantity tube 8 in the quantitative system, extracted by buffering pipeline 22 by the sampling pump 21 in the sampling system, switch by sampling pump 21 by the solenoid valve group 16 valve roads of reaction tank sample intake passage 14 again after water sample is quantitative through quantitative system and by buffering pipeline 22 it is pushed reaction tank 3, then sampling system is taken into reaction tank 3 after by reagent passage 19 that acid potassium permanganate-potassium persulfate mixed solution (oxygenant) is quantitative in the mode same with getting water sample to be measured, control system starts the temperature control program by temperature of reaction to 100 degree of heating arrangement 23 control reaction tanks 3, react after 10 minutes, finish temperature control and make reaction tank 3 temperature be reduced to environment temperature, then sampling system is taken into reaction tank 3 after by reagent passage 19 that oxammonium hydrochloride solution (reductive agent) is quantitative by the first quantity tube 8 in the mode same with getting water sample to be measured, reactant liquor in the reaction tank 3 after control system will be reacted and be finished is divided into three parts, sampling system with the mode same with getting water sample to be measured get a volume wherein through the solenoid valve group 16 valve roads of colorimetric pool sample intake passage 15 switch enter the second quantity tube 9 of the colorimetric pool sample intake passage 15 in the quantitative system and by the second quantity tube 9 on the secondary light source 12 that is used for quantitative some pairing usefulness that arranges and the second optical receiver 13 be taken into colorimetric pool 4 after controlling quantitatively, then sampling system is switched through the solenoid valve group 16 valve roads of colorimetric pool sample intake passage 15 by reagent passage 19 in the mode same with getting water sample to be measured the buffering agent sodium sulfite solution is taken into colorimetric pool 4 by the second quantity tube 9 after quantitatively, last sampling system is switched through the solenoid valve group 16 valve roads of colorimetric pool sample intake passage 15 by reagent passage 15 and developer dithizone solution is taken into colorimetric pool 4 by the second quantity tube 9 after is quantitatively carried out chromogenic reaction, after finishing in 5 minutes, developing time select the light of 485nm wavelength to carry out absorbance measuring, just can measure the content of total mercury in the water sample according to the variation of light intensity before and after the colour developing, total mercury content was measured and was finished this moment, and all solution in the colorimetric pool 4 are discharged in control system control.
Carry out subsequently same program, at first sampling system with the mode same with getting water sample to be measured will react in the reaction tank 3 after finishing second part of one volume reactant liquor through the solenoid valve group 16 valve roads of colorimetric pool sample intake passage 15 switch enter the second quantity tube 9 of the colorimetric pool sample intake passage 15 in the quantitative system and by the second quantity tube 9 on the secondary light source 12 that is used for quantitative some pairing usefulness that arranges and the second optical receiver 13 be taken into colorimetric pool 4 after controlling quantitatively, then sampling system is switched dibasic ammonium citrate-sodium sulphite-oxammonium hydrochloride-potassium cyanide mixed solution (buffering agent through the solenoid valve group 16 valve roads of colorimetric pool sample intake passage 15 by reagent passage 19 in the mode same with getting water sample to be measured, smoke agent for shielding) is taken into colorimetric pool 4 by the second quantity tube 9 after quantitatively, last sampling system is switched through the solenoid valve group 16 valve roads of colorimetric pool sample intake passage 15 by reagent passage 19 and developer dithizone solution is taken into colorimetric pool 4 by the second quantity tube 9 after is quantitatively carried out chromogenic reaction, after finishing in 5 minutes, developing time select the light of 510nm wavelength to carry out absorbance measuring, just can measure total lead amount in the water sample according to the variation of light intensity before and after the colour developing, this moment, total Determination of Pb finished, and all solution in the colorimetric pool 4 are discharged in control system control.
Carry out subsequently same program, at first sampling system with the mode same with getting water sample to be measured will react in the reaction tank 3 after finishing last volumetric reaction liquid through the solenoid valve group 16 valve roads of colorimetric pool sample intake passage 15 switch enter the second quantity tube 9 of the colorimetric pool sample intake passage 15 in the quantitative system and by the second quantity tube 9 on the secondary light source 12 that is used for quantitative some pairing usefulness that arranges and the second optical receiver 13 be taken into colorimetric pool 4 after controlling quantitatively, then sampling system is switched successively with potassium sodium tartrate solution (buffer solution) through the solenoid valve group 16 valve roads of colorimetric pool sample intake passage 15 by reagent passage 19 in the mode same with getting water sample to be measured, NaOH-potassium cyanide mixed solution (smoke agent for shielding) is taken into colorimetric pool 4 by the second quantity tube 9 after quantitatively, last sampling system is switched through the solenoid valve group 16 valve roads of colorimetric pool sample intake passage 15 by reagent passage 19 and developer dithizone solution is taken into colorimetric pool 4 by the second quantity tube 9 after is quantitatively carried out chromogenic reaction, after finishing in 5 minutes, developing time select the light of 518nm wavelength to carry out absorbance measuring, just can measure the content of total cadmium in the water sample according to the variation of light intensity before and after the colour developing, total cadmium content was measured and was finished this moment, and all solution in the colorimetric pool 4 are discharged in control system control.
So far, measuring simultaneously online of total mercury, total plumbous, total cadmium finishes, and sampling system is discharged all solution in the reaction tank 3.
Above-mentioned optical method is measured all to be needed to demarcate in advance with standard solution, calibration process is identical with measuring process, the titer passage 18 of monitoring device comprises the first titer passage, the second titer passage and the 3rd titer passage, then start calibrating procedure, its implementation is identical with measuring process, can realize calibration process by the measurement of the titer in the titer passage 18 being carried out each content of beary metal, after finishing, demarcation can produce respectively total mercury, total plumbous and total three groups of calibration factors of cadmium, these three groups of calibration factors are used for respectively calculating the actual content of total chromium and total nickel in the water sample to be measured after chromogenic reaction finishes and measures absorbance in measuring process.
The utility model has solved prior art can't take into account the quantity that the reliable and user one that causes of the live effect of monitoring cost and monitoring can't choose at random according to the characteristics of self water quality the heavy metal factor of needs monitoring, two need many monitoring instruments when a plurality of factor to be measured of needs monitoring, high expensive, and need a large amount of spaces to put, even the three disposable content that monitor various heavy, its monitoring accuracy also can't satisfy the problem that the monitoring of the pollution source water quality heavy metal concentration of State Bureau of Environmental Protection proposition requires.
The utility model is by utilizing optical method by the light source that a plurality of wavelength can be provided being set or the measurement light source 1 of the light source of continuous wavelength being provided, adopt the light contrast colors liquid of specific wavelength to carry out absorbance measuring, produce intensity variation, the variation of optical detection device 2 measured light intensity of using the optical sensor that can measure the N kind incident light intensity that described measurement light source provides or having a spectrometer of light splitting function measures the content of a few heavy metal species pollutants in the water sample with Real-time Measuring; Method of the present utility model can be implemented in the content of heavy metal substance in the multiple different water of sequentially determining on the monitoring device, and all can arrange in advance by software, improved the precision of measuring, reduce cost, greatly improved monitoring efficient, reduced many required spaces that take of measuring equipment have been installed, and can select voluntarily the heavy metal kind of monitoring according to client's needs.
Claims (10)
1. the monitoring device of various heavy content in the on-line monitoring water body, comprise the control system, sampling system and the measuring system that connect in twos, described sampling system comprises sampling pump system, quantitative system and the hyperchannel sampling system that connects in turn, it is characterized in that: described measuring system comprises measurement light source, optical detection apparatus, reaction tank and colorimetric pool, the shell of described colorimetric pool is provided with into perforation and perforation hole, described measurement light source, optical detection apparatus respectively with colorimetric pool enter perforation and the corresponding setting of perforation hole; Described measurement light source is multi wave length illuminating source or continuous wavelength light source, and described optical detection apparatus is optical sensor or spectrometer with light splitting function.
2. the monitoring device of various heavy content in a kind of on-line monitoring water body according to claim 1, it is characterized in that: described measurement light source comprises that optical splitter or described measurement light source are the rotating light source apparatus.
3. the monitoring device of various heavy content in a kind of on-line monitoring water body according to claim 1, it is characterized in that: described quantitative system comprises and is no less than 2 quantity tubes, be furnished with one group of corresponding light source and optical receiver that arranges on described every quantity tube, the described corresponding light source that arranges is connected with control system with optical receiver.
4. the monitoring device of various heavy content in a kind of on-line monitoring water body according to claim 3, it is characterized in that: described quantitative system comprises the first quantity tube and the second quantity tube, described the first quantity tube correspondence disposes the first light source and the first optical receiver, and described the second quantity tube correspondence disposes secondary light source and the second optical receiver.
5. the monitoring device of various heavy content in a kind of on-line monitoring water body according to claim 1, it is characterized in that: described quantitative system also comprises reaction tank sample intake passage and colorimetric pool sample intake passage, and described reaction tank sample intake passage is connected the solenoid valve group and is connected with reaction tank and colorimetric pool respectively with the colorimetric pool sample intake passage.
6. the monitoring device of various heavy content in a kind of on-line monitoring water body according to claim 1, it is characterized in that: described measurement light source, optical detection apparatus are connected with perforation hole with the perforation that enters of colorimetric pool respectively by optical fiber.
7. the monitoring device of various heavy content in a kind of on-line monitoring water body according to claim 1, it is characterized in that: described hyperchannel sampling system comprises some titer passages, some reagent passage and water sample passage to be measured, and described some titer passages, some reagent passage and the water sample passage of being connected are connected with quantitative system by the solenoid valve group.
8. the monitoring device of various heavy content in a kind of on-line monitoring water body according to claim 1 is characterized in that: described sampling pump system comprises sampling pump, and described sampling pump is connected by cushioning pipeline with quantity tube.
9. the monitoring device of various heavy content in a kind of on-line monitoring water body according to claim 1, it is characterized in that: be provided with heating arrangement in the described reaction tank, described heating arrangement is connected with control system.
10. the monitoring device of various heavy content in a kind of on-line monitoring water body according to claim 1, it is characterized in that: be provided with pumping equipment in the described colorimetric pool, described pumping equipment is connected with control system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220219931 CN202661385U (en) | 2012-05-16 | 2012-05-16 | Monitoring device for on-line monitoring on content of various heavy metals in water |
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| CN 201220219931 CN202661385U (en) | 2012-05-16 | 2012-05-16 | Monitoring device for on-line monitoring on content of various heavy metals in water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512856A (en) * | 2013-10-17 | 2014-01-15 | 江西夏氏春秋环境投资有限公司 | Multi-channel on-line water quality analyzer and application method thereof |
| CN113984756A (en) * | 2021-07-15 | 2022-01-28 | 广州华清环境监测有限公司 | Detection device and method for heavy metals in water environment |
-
2012
- 2012-05-16 CN CN 201220219931 patent/CN202661385U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512856A (en) * | 2013-10-17 | 2014-01-15 | 江西夏氏春秋环境投资有限公司 | Multi-channel on-line water quality analyzer and application method thereof |
| CN103512856B (en) * | 2013-10-17 | 2016-03-30 | 江西夏氏春秋环境投资有限公司 | A kind of hyperchannel water quality online analyzer and application process thereof |
| CN113984756A (en) * | 2021-07-15 | 2022-01-28 | 广州华清环境监测有限公司 | Detection device and method for heavy metals in water environment |
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