CN102004083B - Water quality analyzer for analyzing parameters of copper, chromium and nickel - Google Patents

Water quality analyzer for analyzing parameters of copper, chromium and nickel Download PDF

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Publication number
CN102004083B
CN102004083B CN201010609959A CN201010609959A CN102004083B CN 102004083 B CN102004083 B CN 102004083B CN 201010609959 A CN201010609959 A CN 201010609959A CN 201010609959 A CN201010609959 A CN 201010609959A CN 102004083 B CN102004083 B CN 102004083B
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selector valve
pipe
hyperchannel selector
reagent
passway
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CN102004083A (en
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沈兵
钱建国
宋健
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Jiangsu Huihuan Environmental Protection Technology Co., Ltd.
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JIANGSU HUIHUAN ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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Abstract

The invention discloses a water quality analyzer for analyzing parameters of copper, chromium and nickel, comprising a peristaltic pump for absorbing liquid, wherein the peristaltic pump is connected with a photoelectric metering pipe capable of quantitively sampling through a hose; the photoelectric metering pipe is connected with a first multi-channel selector valve capable of switching a reagent pipeline through a pipe; the first multi-channel selector valve is connected with a second multi-channel selector valve capable of switching the reagent pipeline through a pipe and also connected with a light source switcher capable of switching to characteristic wavelength light sources with different parameters through a pipe; and the light source switcher is provided with a colorimetric pond for measuring the absorbency of solution. The invention has the advantages of high analysis degree, long service life and low cost.

Description

Be used to analyze the Water Test Kits of copper, chromium, three parameters of nickel
Technical field
The present invention relates to a kind of Water Test Kits that is used to analyze copper, chromium, three parameters of nickel.
Background technology
At present, a Water Test Kits can only be analyzed a kind of parameter, and service efficiency is low, and cost is big.And, adopt expensive diaphragm electromagnetic valve in the general Water Test Kits, during use, seal-off pressure can constantly reduce along with the time, and this type solenoid valve has bigger dead angle, after service time is long, was out of order easily, and maintenance cost is also high.
Summary of the invention
The objective of the invention is in order to overcome above deficiency, provide a kind of analysis precision height, long service life, low being used to of cost to analyze the Water Test Kits of copper, chromium, three parameters of nickel.
The object of the invention is realized through following technical scheme: a kind of Water Test Kits that is used to analyze copper, chromium, three parameters of nickel; Analyser comprises the peristaltic pump that is used for draw solution; Peristaltic pump links to each other with the photoelectrometer buret that can carry out quantitative sampling through flexible pipe; The photoelectrometer buret links to each other with the first hyperchannel selector valve that can carry out the switching of reagent pipeline through pipe; The first hyperchannel selector valve links to each other with the second hyperchannel selector valve that can carry out the switching of reagent pipeline through pipe; The first hyperchannel selector valve also is connected with the light source switch of the characteristic wavelength light source that switches to different parameters through pipe, and the light source switch is provided with the colorimetric pool that is used to measure solution absorbance.
Further improvement of the present invention is: the first hyperchannel selector valve is provided with a plurality of passwaies; The second hyperchannel selector valve is provided with a plurality of passwaies; Wherein any passway on the first hyperchannel selector valve links to each other with the photoelectrometer buret through pipe; Wherein any passway on the first hyperchannel selector valve links to each other with wherein any passway on the second hyperchannel selector valve; On the first hyperchannel selector valve any is communicated with the road junction and links to each other with the light source switch through pipe, and all being connected with pipe on the rest channels mouth on the first hyperchannel selector valve and the second hyperchannel selector valve is inlet, is used for inspiration solution.
Further improvement of the present invention is: pipe is fine reagent pipe, and fine reagent pipe can be the fluorine plastic tube of 1.2mm internal diameter.
The present invention compared with prior art has the following advantages: the present invention adopts unique technological design, realizes a machine three parameters, cycle analysis; Utilize the photoelectrometer buret to overcome the defective that peristaltic pump flexible pipe wearing and tearing precision reduces, shutting out the light through liquid causes the change of signal, accurately realizes the quantitative of reagent; The cooperation of fine reagent pipe and electro-optical system realizes the trace reagent accurate quantification, significantly reduces the reagent use amount; The hyperchannel selector valve, passage is versatile and flexible, greatly reduces maintenance and maintenance cost.The hyperchannel selector valve that the present invention adopts is compared with other solenoid valves, has dead volume still less, and antiseptic property is high, the advantage that compressive resistance is high; The reagent sample introduction adopts the mode that the peristaltic pump negative pressure sucks and malleation blows out, and has an air cushioning district between reagent and flexible pipe, guarantees that liquid does not contact with pump line; Greatly reduce the requirement of flexible pipe; And stopped the pollution of pump line, improved peristaltic pump serviceable life, instrumental analysis precision reagent; The used fine reagent pipe of instrument adopts the fluorine plastic tube of 1.2mm internal diameter, cuts in advance and blocks water kind particle before getting into the hyperchannel selector valve, ensures the normal operation of hyperchannel selector valve.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Label among the figure: 1-peristaltic pump, 2-flexible pipe, 3-photoelectrometer buret, the 4-first hyperchannel selector valve, 4-1-passway, the 5-second hyperchannel selector valve, 5-1-passway, 6-light source switch, 7-colorimetric pool.
Embodiment:
In order to deepen to understanding of the present invention, will combine embodiment and accompanying drawing that the present invention is made further detailed description below, this embodiment only is used to explain the present invention, does not constitute the qualification to protection domain of the present invention.
Show a kind of embodiment that the present invention is used to analyze the Water Test Kits of copper, chromium, three parameters of nickel like Fig. 1, comprise peristaltic pump 1, peristaltic pump 1 negative pressure is added water sample to be measured, reagent, standard specimen, developer; Solution does not directly contact with peristaltic pump, prevents the pump line corrosion and pollutes the increase device hardware life-span; And; Peristaltic pump 1 upset can produce air, air can with reagent mix, guarantee that reaction solution mixes fully; Peristaltic pump 1 links to each other with photoelectrometer buret 3 through flexible pipe 2, adopts photoelectric metering 3 pipes to carry out quantitative sampling, accurate measurement; Again property is high, and photoelectrometer buret 3 links to each other with the first hyperchannel selector valve 4 through pipe, and the first hyperchannel selector valve 4 links to each other with the second hyperchannel selector valve 5 through pipe; The first hyperchannel selector valve 4 and the second hyperchannel selector valve 5 can carry out the reagent pipeline and switch, and add reagent by the analytical procedure order, and the first hyperchannel selector valve 4 also is connected with light source switch 6 through pipe; Light source switch 6 switches to the characteristic wavelength light source of different parameters, and light source switch 6 is provided with colorimetric pool 7, and the used colorimetric pool of the present invention has longer light path than standard method; The light path of general colorimetric pool is 1cm; The light path of the colorimetric pool that the present invention is used is 3cm, and instrumental sensitivity is higher, and photoelectric colorimetry is measured solution absorbency; Through the typical curve of instrumental calibration, calculate water quality three parameters.
As shown in fig. 1: the first hyperchannel selector valve 4 is provided with nine passway 4-1; The second hyperchannel selector valve 5 is provided with nine passway 5-1; Wherein any passway 4-1 on the first hyperchannel selector valve 4 links to each other with photoelectrometer buret 3 through pipe; Wherein any passway 4-1 on the first hyperchannel selector valve 4 links to each other with wherein any passway 5-1 on the second hyperchannel selector valve 5; On the first hyperchannel selector valve 4 any is communicated with road junction 4-1 and links to each other with light source switch 6 through pipe, on the first hyperchannel selector valve 4 among remaining six passway 4-1 one of them passway 4-1 be liquid outlet, be used for effluent discharge; All the other five passway 4-1 are inlet; Be used for inspiration standard specimen, distilled water, reagent, first developer, on the second hyperchannel selector valve 5 among remaining eight passway 5-1 one of them passway 5-1 be liquid outlet, be used to discharge standard specimen; All the other seven passway 5-1 are inlet, are used for inspiration water sample to be measured, standard specimen, reagent, second developer, the 3rd developer.
Three parameter Water Test Kits among the present invention all adopt AAS; Measurement light source adopts the single wavelength LED of the characteristic lamp of three parameters; According to analytical parameters, the wheel measuring light source switches to corresponding characteristic wavelength; Adopt during use and control temperature, make solution fully reaction under constant temperature based on the temperature control system of Intelligent Digital PID algorithm.Below be the analytic approach of three parameters:
The mensuration of copper ion adopts the bisoxalydihydrazone AAS, in solution, adds citrate and makees screening agent; The interference of ferric ion, cobalt ions in the shielding water sample is regulated the pH value about 9, in water sample, adds developer; Copper ion and developer reaction; Generate blue complex, carry out colorimetric, calculate the concentration of copper ion in the water sample according to absorbance at the 610nm place;
Chromic mensuration; Adopt diphenyl carbazide spectrophotometry, phenylhydrazine carbonyl azobenzene is produced in sexavalent chrome and diphenylcarbazide reaction in the solution; Chromium itself then is reduced to trivalent; Trivalent chromium and phenylhydrazine carbonyl azobenzene reaction solution generate the aubergine soluble compound, carry out spectrophotometry in wavelength 540nm place;
The mensuration of nickel ion adopts the dimethylglyoxime AAS, in acid medium; Make oxygenant with ammonium persulfate; Nickelous in the water sample is oxidized to tetravalence nickel, and again in strongly basic medium (the pH value is about 12), tetravalence nickel and dimethylglyoxime form orange-yellow soluble complexes; Absorption peak calculates nickel concentration in the water sample in the 470nm wavelength according to absorbance.
Instrument is analyzed water quality parameter according to the absorbance of reaction reagent, and when absorbance was on the low side or higher, instrument can be adjusted through many interpolations or dilution water sample, realizes the range automatic switching function.Three parameters analysis methods and reagent are different from the reagent that uses in the GB again according to national standard method, and it is harsh to have overcome the reagent preservation condition, influence apt to deteriorate.The reagent of using among the present invention is easy to configuration, and the holding time is long, and is stable not perishable.The specific refrigerating space of instrument configuration is used for reagent and places.
Measurement range of the present invention is generally 0-10mg/L (expanded range as required); Accuracy error≤± 5% that detects, zero point drift≤± 3%, span drift≤± 5%; Measuring period>=20min; Time>=the 1440h/p of average non-fault continuous working, insulation impedance>=30M Ω, resolution is 0.01mg/L.The present invention realizes a machine three parameter analyses, and instrument is through set inside, and capable of circulation or predefined procedure carries out the water quality parameter analysis.After the measurement cyclic process begins, with new water sample flushing each pipeline, metrology frame and colorimetric pool, to remove residual chaff interference.The present invention adopts unique technological design, realizes a machine three parameters, cycle analysis; The present invention adopts advanced sequentical injection analysis, has less trouble, low maintenance and high performance-price ratio; Utilize the photoelectrometer buret to overcome the defective that peristaltic pump flexible pipe wearing and tearing precision reduces, shutting out the light through liquid causes the change of signal, accurately realizes the quantitative of reagent; The cooperation of fine reagent pipe and electro-optical system realizes the trace reagent accurate quantification, significantly reduces the reagent use amount; The hyperchannel selector valve, passage is versatile and flexible, greatly reduces maintenance and maintenance cost.The hyperchannel selector valve that the present invention adopts is compared with other solenoid valves, has dead volume still less, and antiseptic property is high, the advantage that compressive resistance is high; The reagent sample introduction adopts the mode that the peristaltic pump negative pressure sucks and malleation blows out, and has an air cushioning district between reagent and flexible pipe, guarantees that liquid does not contact with pump line; Greatly reduce the requirement of flexible pipe; And stopped the pollution of pump line, improved peristaltic pump serviceable life, instrumental analysis precision reagent; The used fine reagent pipe of instrument adopts the fluorine plastic tube of 1.2mm internal diameter, cuts in advance and blocks water kind particle before getting into the hyperchannel selector valve, ensures the normal operation of hyperchannel selector valve; Employing is controlled temperature based on the temperature control system of Intelligent Digital PID algorithm, strengthens technique for temperature compensation, and temperature control accurately guarantees that reaction conditions meets the analysis requirement; Instrument realizes that automatic range switches, and adjusts through many interpolations or dilution water sample, and the absorbance that makes reaction mixture increases and measures accuracy in the optimum measurement scope; The present invention can install the GSM mobile handset SMS alarm function, when instrument breaks down or water sample exceeds standard, all can pass through the SMS notification user; The present invention also can realize the Long-distance Control of Surveillance center to the monitoring point through network, realizes the long-range countercharge of operation interface.

Claims (3)

1. Water Test Kits that is used to analyze copper, chromium, three parameters of nickel; It is characterized in that: said analyser comprises the peristaltic pump (1) that is used for draw solution; Said peristaltic pump (1) links to each other with the photoelectrometer buret (3) that can carry out quantitative sampling through flexible pipe (2); Said photoelectrometer buret (3) links to each other with the first hyperchannel selector valve (4) that can carry out the switching of reagent pipeline through pipe; The said first hyperchannel selector valve (4) links to each other with the second hyperchannel selector valve (5) that can carry out the switching of reagent pipeline through pipe; The said first hyperchannel selector valve (4) also is connected with the light source switch (6) of the characteristic wavelength light source that switches to different parameters through pipe; Said light source switch (6) is provided with the colorimetric pool (7) that is used to measure solution absorbance; The said first hyperchannel selector valve (4) is provided with nine passwaies (4-1); The said second hyperchannel selector valve (5) is provided with nine passwaies (5-1); Wherein any said passway (4-1) on the said first hyperchannel selector valve (4) links to each other with said photoelectrometer buret (3) through pipe, and wherein any the said passway (4-1) on the said first hyperchannel selector valve (4) links to each other with wherein any said passway (5-1) on the said second hyperchannel selector valve (5), and any the said passway (4-1) on the said first hyperchannel selector valve (4) is passed through pipe and linked to each other with said light source switch (6); One of them said passway (4-1) is a liquid outlet in last remaining six the said passwaies (4-1) of the said first hyperchannel selector valve (4); Be used for effluent discharge, all the other five said passwaies (4-1) are inlet, are used for inspiration standard specimen, distilled water, reagent, first developer; One of them said passway (5-1) is a liquid outlet in last remaining eight the said passwaies (5-1) of the said second hyperchannel selector valve (5); Be used to discharge standard specimen, all the other seven said passwaies (5-1) are inlet, are used for inspiration water sample to be measured, standard specimen, reagent, second developer, the 3rd developer.
2. according to the said Water Test Kits that is used to analyze copper, chromium, three parameters of nickel of claim 1, it is characterized in that: said pipe is fine reagent pipe.
3. according to the said Water Test Kits that is used to analyze copper, chromium, three parameters of nickel of claim 2, it is characterized in that: the fluorine plastic tube that said fine reagent pipe is the 1.2mm internal diameter.
CN201010609959A 2010-12-29 2010-12-29 Water quality analyzer for analyzing parameters of copper, chromium and nickel Active CN102004083B (en)

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CN102680462B (en) * 2012-05-16 2015-04-22 王磊 Method and device for on-line monitoring of contents of multiple heavy metals in water body
CN103499576B (en) * 2013-10-21 2015-08-05 江苏汇环环保科技有限公司 A kind of instrument for blowdown monitoring
CN104730216B (en) * 2015-04-16 2016-12-07 肖巍 A kind of analysis metering device and liquid analysis system
CN106596431A (en) * 2016-12-23 2017-04-26 新疆农业科学院农业机械化研究所 Photoelectric-colorimetry-method-based online detection device for nitrogen-phosphorus-potassium-water-fertilizer nutrient concentrations
CN107621454A (en) * 2017-10-20 2018-01-23 杭州希玛诺光电技术股份有限公司 A kind of multi-parameter water quality rapid assay methods of parallel/serial row multiplexing
CN108225854B (en) * 2017-12-29 2020-03-31 江苏汇环环保科技有限公司 VOC on-line monitoring double-pump negative pressure sampling system
CN108226065A (en) * 2017-12-29 2018-06-29 江苏汇环环保科技有限公司 A kind of high-precision DEK multiparameter water quality analyzers

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CN101603925A (en) * 2009-07-23 2009-12-16 江苏德林环保技术有限公司 The hyperchannel direction selecting flow-injection quick analysis system for hexavalent chromium water quality
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CN101603925A (en) * 2009-07-23 2009-12-16 江苏德林环保技术有限公司 The hyperchannel direction selecting flow-injection quick analysis system for hexavalent chromium water quality
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