CN108982388A - The test method of seawater total nitrogen content - Google Patents

The test method of seawater total nitrogen content Download PDF

Info

Publication number
CN108982388A
CN108982388A CN201811010913.6A CN201811010913A CN108982388A CN 108982388 A CN108982388 A CN 108982388A CN 201811010913 A CN201811010913 A CN 201811010913A CN 108982388 A CN108982388 A CN 108982388A
Authority
CN
China
Prior art keywords
total nitrogen
counteracting tank
tank
seawater
counteracting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811010913.6A
Other languages
Chinese (zh)
Inventor
许康
杨波
赵新涛
张金强
丁养志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Zhuo Jian Marine Equipment Technology Co Ltd
Original Assignee
Qingdao Zhuo Jian Marine Equipment Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Zhuo Jian Marine Equipment Technology Co Ltd filed Critical Qingdao Zhuo Jian Marine Equipment Technology Co Ltd
Priority to CN201811010913.6A priority Critical patent/CN108982388A/en
Publication of CN108982388A publication Critical patent/CN108982388A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/38Diluting, dispersing or mixing samples
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/44Sample treatment involving radiation, e.g. heat
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/78Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • Engineering & Computer Science (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The present invention provides a kind of test method of seawater total nitrogen content, including draws total nitrogen absorbance-concentration relationship curve program and seawater total nitrogen test program.The present invention can be used for automatically continuously measuring seawater, drinking water, surface water, underground water, municipal wastewater, the total nitrogen concentration in trade effluent, cannot be used for the test of seawater total nitrogen or the problems such as test accuracy is low, poor repeatability to solve equipment in the market.

Description

The test method of seawater total nitrogen content
Technical field
The present invention relates to seawater quality detection field more particularly to a kind of seawater total nitrogen content test methods.
Background technique
Important component of the total nitrogen as marine environmental monitoring, based on artificial sample and lab analysis, in recent years, With the multi-platform sensing technology of intelligent Marine Environmental Elements, real-time communication of data technology, standardization data sharing and information The development of service technology, urgent need establish marine environmental monitoring system, and then realize the synthesis, continuous, in real time, precisely of marine environment Observation.The measurement of seawater total nitrogen is to the monitoring direction development based on automatic monitoring and intelligent and networking.
The existing much research about total nitrogen water quality online analyzer both at home and abroad, total nitrogen water quality online analyzer use master Analysis method is wanted to have: (1) alkaline potassium per-sulfate digestion-spectrophotometry;(2) closed combustion oxidation-chemiluminometry.From principle On say, persulfate resolution-spectrophotometry is the main choosing method of online total nitrogen total phosphorus analysis and the official method of various countries. Total nitrogen in-line analyzer based on closed combustion oxidation-chemiluminometry is limited primarily to Japan, is Japanese Industrial Specifications association The method that meeting (JIS) is approved.
With the extensive use of total nitrogen on-line automatic monitoring instrument, the equipment of various brands, properties refer on domestic market Mark, to operate with increasingly specification simple, but still need further understanding there are many problem in terms of application is with development and improve, Preferably to meet the requirement of Chinese water quality on-line automatic analyzer.
When testing total nitrogen according to national standards, tested with untreated water sample in situ.The online instrument of total nitrogen at present For device in order to avoid turbid water body blocking pipeline, big city is equipped with sample pretreatment device, the TNP-4110 sampling of such as Japanese Shimadzu When can remove biggish solid impurity by the strainer of 50 mesh, recycle high-speed stirred knife to crush the suspended particulate of sample, pass through After homogenizer processing, test of drawing water is carried out, cleans strainer and sample processing part with ejected wash water after sampling, waits draw water next time. Since the numerous water bodys of Chinese water system are complicated, water sample certainly will will cause the loss of a part of nitrogen by front processor, influence result and sentence It is fixed.
By the test analysis discovery to seawater total nitrogen on-line instrument, each instrument is doing performance indicator with inorganic standard solution When the organic nitrogen titer that can be met the requirements substantially when verifying, but glycine is used to prepare is tested, relative error high level can reach 30~50%.To find out its cause, being on the one hand in continuous mode, seawater sample is not required according to national standard method, and digestion condition reaches 120 DEG C are reacted 30 minutes, cause organic nitrogen that cannot clear up completely;It on the other hand is the total nitrogen in water sample through aoxidizing resolution as nitre It is nitrite test by nitrate reduction, due to by uviol lamp intensity, irradiation using the method for ultraviolet reduction after hydrochlorate The influence of the factors such as time, sample and light source distance, nitrate cannot be completely reduced as nitrite.Therefore, resolution rate and The low accuracy for causing seawater total nitrogen on-line instrument of reduction rate and repeatability cannot meet testing requirement.
The equipment for being currently used for the monitoring of seawater total nitrogen, based on cabinet type machine or desktop computer, volume is big, is not suitable for floating online Mark, monitoring ship.
Total nitrogen on-line monitoring equipment foreign brand name is expensive, and procurement cycle is long, and operation expense is high.Home brands produce Product are although cheap, and maintenance cost is low, but measuring stability is poor, and failure rate is higher.
Total nitrogen water quality online analyzer on domestic market there are aiming at the problem that, the purpose of the present invention is to provide one The device for detecting the total nitrogen content in seawater is planted, mainly by sampling system, water sample processing system, detection system and data It is useless to can be used for automatically continuously measuring seawater, drinking water, surface water, underground water, municipal administration for the compositions such as acquisition, processing and Transmission system Total nitrogen concentration in water, trade effluent, the test or test that cannot be used for seawater total nitrogen with the equipment of solution in the market are accurately The problems such as spending low, poor repeatability.
Summary of the invention
The purpose of the present invention is to provide a kind of test method of seawater total nitrogen content, including drafting total nitrogen absorbance-are dense Relation curve program and seawater total nitrogen test program are spent, the drafting total nitrogen absorbance-concentration relationship curve program includes following Step:
Step 1: after extracting pure water rinse pipeline, signal processing system receives the light cast out for passing through counteracting tank, and remembers It records current collected light intensity, close the step of pure water pipeline, the step for the rinse liquid being discharged in counteracting tank;
Step 2: extracting the nitrate standard solution of known concentration to counteracting tank, then extract the digestion solution of certain volume to resolution Tank blasts a certain amount of air, is uniformly mixed, then controls fluid temperature in counteracting tank in the first preset temperature range through first After preset time, then the step of fluid temperature in counteracting tank is down to the second preset temperature;
Step 3: extracting the reducing solution of certain volume to counteracting tank, blast a certain amount of air, be uniformly mixed, later control resolution The second preset temperature of fluid temperature in tank keeps the second preset time, then the fluid temperature in counteracting tank is down to room temperature, then A certain amount of color developing agent agent is extracted to counteracting tank and blasts a certain amount of air, is uniformly mixed, then stands colour developing and is preset through third The step of time;
Step 4: opening light source, acquisition of transmission luminous intensity I1, the mixed solution being then exhausted from counteracting tank, closing light source, calculating suction The step of shading value;
Step 5: selecting a series of nitrate standard solution of various concentrations, repeat above-mentioned steps 1-4, further according to different dense The column nitrate of degree and the corresponding relationship of absorbance draw total nitrogen absorbance-concentration relationship curve;
The seawater total nitrogen test program includes following steps:
Step 6: extracting that pure water rinse pipeline, signal processing system is waiting receives the stable light cast out by counteracting tank After the signal of line conversion, current collected light intensity is recorded, incident intensity I is denoted as2, close pure water pipeline and light source, row The step of rinse liquid in counteracting tank out;
Step 7: extracting the seawater sample of certain volume to counteracting tank, then the digestion solution for extracting certain volume is blasted to counteracting tank A certain amount of air is uniformly mixed, then controls fluid temperature in counteracting tank when the first preset temperature range is default through first Between after, the step of fluid temperature in counteracting tank is down to the second preset temperature;
Step 8: extracting the reducing solution of certain volume to counteracting tank, blast a certain amount of air, after mixing, control counteracting tank Interior the second preset temperature of fluid temperature keeps the second preset time, then the fluid temperature in counteracting tank is down to room temperature, extracts A certain amount of color developing agent agent blasts a certain amount of air to counteracting tank again, after mixing, stands colour developing third preset time The step of;
Step 9: acquisition of transmission luminous intensity I3Afterwards, the mixed solution in counteracting tank is discharged, closes light source, calculates absorbance value, and According to total nitrogen concentration-absorbance relation curve, the step of calculating the total nitrogen content in sample;
Further, first preset temperature is 120~124 DEG C, and first preset time is 30 minutes, and described second is default Temperature is 60 DEG C, and second preset time is 20 minutes, and the third preset time is 15 minutes.
Further, the counteracting tank is quartz glass tank, and the raised mode of fluid temperature controlled in quartz glass tank is Pulsed controls the mode of heater strip, and the device of the reduction fluid temperature in the quartz glass tank is air cooling equipment
The present invention also provides a kind of seawater total nitrogen content on-line measuring devices, include the injection of sample intake passage and stock layout channel Pump, the stock layout channel are connected with central passage, and the central passage is also connected with multiple channels, which is characterized in that described One of channel in multiple channels is connected with the reaction solution device for being connected with test device, the reaction solution device packet The counteracting tank for the winding heater strip including upper cover and lower cover being connected with air cooling equipment is included, the counteracting tank is also connected with gas Pump, the test device includes light source and optical receiver, and the optical entrance of the light source face counteracting tank, the optical receiver is just To the optical emission exit of counteracting tank, the optical receiver is connected with signal processing system.
Further, the top and bottom of the test device are connected with the air pump respectively.
Further, the lower end of the test device is connected with drain triple valve, and normally closed channel connects waste discharge liquid pipe, normally opened Channel is connected by check valve with the air pump.
Further, the upper end of the test device is connected with exhaust three-way valve, and the normally closed channel of the exhaust three-way valve connects Connect air pump, normally opened channel connection exhaust pipe.
The advantages and positive effects of the present invention are:
Methods and apparatus of the present invention, can be used for automatically continuously measuring seawater, drinking water, surface water, underground water, municipal wastewater, Total nitrogen concentration in trade effluent, solves the problems, such as to cannot be used for the test of seawater total nitrogen, and test accuracy is high, reproducible The problems such as.
Detailed description of the invention
In order to illustrate the embodiments of the present invention more clearly or technical em- bodiments in the prior art, below will to embodiment or Attached drawing needed to be used in the description of the prior art does one and simply introduces, it should be apparent that, the accompanying drawings in the following description is this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.
Fig. 1 is the schematic diagram of seawater total nitrogen content on-line measuring device of the present invention;
Fig. 2 is total nitrogen absorbance of the present invention-concentration working curve test flow chart;
Fig. 3 is the total nitrogen content test flow chart in seawater sample of the present invention;
In figure, syringe pump 1, pure water solenoid valve 2, liquid storage ring 3, Multi-channel switching valve 4, air pump 8, upper cover 51 winds heater strip Quartz glass tank 52, lower cover 53, air cooling equipment 54, light source 61, optical receiver 62, exhaust three-way valve 71, drain triple valve 72 are single To valve 73.
Specific embodiment
To keep the purpose of the present invention, technical em- bodiments and advantage clearer, hereinafter with reference in the embodiment of the present invention Attached drawing clearly and completely describes technical em- bodiments of the invention by embodiment, it is clear that described embodiment is this hair Bright a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Embodiment 1, as shown in Figure 1, a kind of seawater total nitrogen on-line measuring device, including syringe pump 1, pure water solenoid valve 2, storage Pendular ring 3, Multi-channel switching valve 4, reaction solution device, test device, exhaust three-way valve 71, drain triple valve 72, check valve 73 With air pump 8.
The sample intake passage and pure water solenoid valve 2 of the syringe pump 1 connect, for extracting pure water.The stock layout of the syringe pump 1 Channel and pure water liquid storage ring 3 connect, for extracting pure water.
The liquid storage ring 3 is connect with the central passage of Multi-channel switching valve 4, for extracting reagent and sample.
One channel of the Multi-channel switching valve 4 is connect with reaction solution device, for sample and reagent to be added, remaining Channel is separately connected different reaction reagents.
Reaction solution device upper end is connect with exhaust three-way valve 71.The reaction solution device includes upper cover 51, twines Around the quartz glass tank 52, lower cover 53 and air cooling equipment 54 of heater strip.
The test device includes light source 61 and optical receiver 62.The light of 61 face quartz glass tank 52 of light source is incident Mouthful, the liquid in transmitting light irradiation quartz digestion tank.The optical emission exit of 62 face quartz glass tank 52 of optical receiver, connects The light projected by optical emission exit is received, and is converted into electric signal, output to signal processing system.
The exhaust three-way valve 71, normally closed channel connect air pump 8, normally opened channel connection exhaust pipe, the connection of another channel Counteracting tank upper end 51.
The drain triple valve 72, normally closed channel connect waste discharge liquid pipe, and normally opened channel connects check valve 73, another channel Connect quartz glass tank lower end 53.
The check valve 73 connects air pump 8 and triple valve 72.
The air pump 8 is used to pass through the air-blowing into reaction solution device of triple valve 71 and triple valve 72.
Embodiment 2
As shown in Figure 2,3, it is described in detail by monitoring method of the present apparatus to the total nitrogen content in sample solution.
Total nitrogen absorbance-concentration relationship curve is drawn out using the nitrate standard solution of various concentration, testing process is such as Shown in Fig. 2, include the following steps.
Pure water solenoid valve, light source and syringe pump are opened, pure water rinse pipeline is extracted;
The light cast out for passing through quartz glass tank is received by photodiode, receives stabilization to signal processing system Signal after, record current collected light intensity, be denoted as incident intensity I1, close pure water solenoid valve and light source;
Drain triple valve is opened, the rinse liquid in quartz glass tank is discharged;
Syringe pump is opened, extracts the nitrate standard solution of known concentration to quartz glass tank;
The digestion solution of certain volume is extracted to quartz glass tank, blasts a certain amount of air, is uniformly mixed;
Pulsed controls the energized state of heater strip, and then the fluid temperature controlled in counteracting tank divides in 120~124 DEG C of ranges 30 Clock;
Air cooling equipment is opened, the fluid temperature in quartz glass tank is down to 60 DEG C;
The reducing solution of certain volume is extracted to quartz glass tank;
A certain amount of air is blasted, is uniformly mixed;
Pulsed controls the energized state of heater strip, and then controls 60 DEG C of fluid temperature in counteracting tank and kept for 20 minutes;
Air cooling equipment is opened, the fluid temperature in quartz glass tank is down to room temperature;
A certain amount of color developing agent agent is extracted to quartz glass tank;
A certain amount of air is blasted, is uniformly mixed;
Stand colour developing 15 minutes;
Open light source, acquisition of transmission luminous intensity I2
Drain triple valve is opened, the mixed solution in quartz glass tank is discharged, closes light source, calculates absorbance value;
A series of nitrate standard solution for selecting various concentrations, repeats above-mentioned steps;
According to a series of corresponding relationship of nitrate concentrations and absorbance, total nitrogen absorbance-concentration relationship curve is drawn.
Total nitrogen content testing process in seawater sample is as shown in Figure 3, comprising the following steps:
Pure water solenoid valve, light source and syringe pump are opened, pure water rinse pipeline is extracted;
The light cast out for passing through quartz glass tank is received by photodiode, receives stabilization to signal processing system Signal after, record current collected light intensity, be denoted as incident intensity I3, close pure water solenoid valve and light source;
Drain triple valve is opened, the rinse liquid in quartz glass tank is discharged;
Syringe pump is opened, extracts the seawater sample of certain volume to quartz glass tank;
The digestion solution of certain volume is extracted to quartz glass tank, blasts a certain amount of air, is uniformly mixed;
Pulsed controls the energized state of heater strip, and then the fluid temperature controlled in counteracting tank divides in 120~124 DEG C of ranges 30 Clock;
Air cooling equipment is opened, the fluid temperature in quartz glass tank is down to 60 DEG C;
The reducing solution of certain volume is extracted to quartz glass tank;
A certain amount of air is blasted, is uniformly mixed;
Pulsed controls the energized state of heater strip, and then controls 60 DEG C of fluid temperature in counteracting tank and kept for 20 minutes;
Air cooling equipment is opened, the fluid temperature in quartz glass tank is down to room temperature;
A certain amount of color developing agent agent is extracted to quartz glass tank;
A certain amount of air is blasted, is uniformly mixed;
Stand colour developing 15 minutes;
Open light source, acquisition of transmission luminous intensity I4
Drain triple valve is opened, the mixed solution in quartz glass tank is discharged, closes light source, calculates absorbance value;
According to total nitrogen concentration-absorbance relation curve, the total nitrogen content in sample is calculated.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation, It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.

Claims (7)

1. the test method of seawater total nitrogen content, including draw total nitrogen absorbance-concentration relationship curve program and the survey of seawater total nitrogen Try program, the drafting total nitrogen absorbance-concentration relationship curve program the following steps are included:
Step 1: after extracting pure water rinse pipeline, signal processing system receives the light cast out for passing through counteracting tank, and remembers It records current collected light intensity, close the step of pure water pipeline, the rinse liquid being discharged in counteracting tank;
Step 2: extracting the nitrate standard solution of known concentration to counteracting tank, then extract the digestion solution of certain volume to resolution Tank blasts a certain amount of air, is uniformly mixed, then controls fluid temperature in counteracting tank in the first preset temperature range through first After preset time, then the step of fluid temperature in counteracting tank is down to the second preset temperature;
Step 3: extracting the reducing solution of certain volume to counteracting tank, blast a certain amount of air, be uniformly mixed, later control resolution Fluid temperature to the second preset temperature in tank keeps the second preset time, then the fluid temperature in counteracting tank is down to room temperature, A certain amount of color developing agent is extracted again to counteracting tank and blasts a certain amount of air, is uniformly mixed, then is stood colour developing and preset through third The step of time;
Step 4: opening light source, acquisition of transmission luminous intensity, the mixed solution being then exhausted from counteracting tank closes light source, calculates extinction The step of angle value;
Step 5: selecting a series of nitrate standard solution of various concentrations, repeat above-mentioned steps 1-4, further according to different dense The column nitrate of degree and the corresponding relationship of absorbance draw total nitrogen absorbance-concentration relationship curve;
The seawater total nitrogen test program includes following steps:
Step 6: extracting pure water rinse pipeline, signal processing system is waiting to receive the stable light cast out by counteracting tank After the signal of line conversion, current collected light intensity is recorded, incident intensity is denoted as, closes pure water pipeline and light source, discharge The step of rinse liquid in counteracting tank;
Step 7: extracting the seawater sample of certain volume to counteracting tank, then the digestion solution for extracting certain volume is blasted to counteracting tank A certain amount of air is uniformly mixed, then controls fluid temperature in counteracting tank when the first preset temperature range is default through first Between after, the step of fluid temperature in counteracting tank is down to the second preset temperature;
Step 8: extracting the reducing solution of certain volume to counteracting tank, blast a certain amount of air, after mixing, control counteracting tank Interior the second preset temperature of fluid temperature keeps the second preset time, then the fluid temperature in counteracting tank is down to room temperature, extracts A certain amount of color developing agent agent blasts a certain amount of air to counteracting tank again, after mixing, stands colour developing third preset time The step of;
Step 9: after acquisition of transmission luminous intensity, the mixed solution in counteracting tank is discharged, closes light source, calculates absorbance value, and root According to total nitrogen concentration-absorbance relation curve, the step of calculating the total nitrogen content in sample.
2. the test method of seawater total nitrogen content as described in claim 1, which is characterized in that first preset temperature is 120~124 DEG C, first preset time is 30 minutes, and second preset temperature is 60 DEG C, and second preset time is 20 minutes, the third preset time was 15 minutes.
3. the test method of seawater total nitrogen content as described in claim 1, which is characterized in that the counteracting tank is quartz glass Tank, the raised mode of fluid temperature in quartz glass tank that controls are the mode that pulsed controls heater strip, the quartz glass The device of reduction fluid temperature in tank is air cooling equipment.
4. seawater total nitrogen content on-line measuring device includes the syringe pump of sample intake passage and stock layout channel, the stock layout channel It is connected with central passage, the central passage is also connected with multiple channels, which is characterized in that wherein the one of the multiple channel A channel is connected with the reaction solution device for being connected with test device, and the reaction solution device includes being connected with air cooling equipment What is connect includes the counteracting tank of the winding heater strip of upper cover and lower cover, and the counteracting tank is also connected with air pump, the test device packet Include light source and optical receiver, the optical entrance of the light source face counteracting tank, the light outgoing of the optical receiver face counteracting tank Mouthful, the optical receiver is connected with signal processing system.
5. seawater total nitrogen content on-line measuring device as claimed in claim 4, which is characterized in that the upper end of the test device It is connected respectively with the air pump with lower end.
6. seawater total nitrogen content on-line measuring device as claimed in claim 4, which is characterized in that the lower end of the test device It is connected with drain triple valve, normally closed channel connects waste discharge liquid pipe, and normally opened channel is connected by check valve with the air pump.
7. seawater total nitrogen content on-line measuring device as claimed in claim 4, which is characterized in that the upper end of the test device It is connected with exhaust three-way valve, the normally closed channel connection air pump of the exhaust three-way valve, normally opened channel connect exhaust pipe.
CN201811010913.6A 2018-08-31 2018-08-31 The test method of seawater total nitrogen content Pending CN108982388A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811010913.6A CN108982388A (en) 2018-08-31 2018-08-31 The test method of seawater total nitrogen content

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811010913.6A CN108982388A (en) 2018-08-31 2018-08-31 The test method of seawater total nitrogen content

Publications (1)

Publication Number Publication Date
CN108982388A true CN108982388A (en) 2018-12-11

Family

ID=64548010

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811010913.6A Pending CN108982388A (en) 2018-08-31 2018-08-31 The test method of seawater total nitrogen content

Country Status (1)

Country Link
CN (1) CN108982388A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111337483A (en) * 2020-02-18 2020-06-26 青岛卓建海洋装备科技有限公司 Seawater ammonia nitrogen concentration online detection device and method
CN111562226A (en) * 2020-04-10 2020-08-21 中国科学院西安光学精密机械研究所 Method and system for analyzing total nitrogen and total phosphorus in seawater based on characteristic peak area of absorption spectrum

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0727706A (en) * 1993-07-14 1995-01-31 Shimadzu Corp Analyzer for nitrogen compound and phosphorus compound in water
CN101294906A (en) * 2008-06-17 2008-10-29 聚光科技(杭州)有限公司 Water quality on-line monitoring method and system
CN203965314U (en) * 2014-07-07 2014-11-26 北京尤思腾科技有限公司 Online total phosphorus Water Test Kits
CN106769938A (en) * 2016-12-30 2017-05-31 中兴仪器(深圳)有限公司 A kind of total nitrogen in-line analyzer and its detection method
CN107340249A (en) * 2017-07-05 2017-11-10 安徽皖仪科技股份有限公司 A kind of method of total nitrogen content in on-line checking environmental water sample
CN208902601U (en) * 2018-08-31 2019-05-24 青岛卓建海洋装备科技有限公司 Seawater total nitrogen concentration test device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0727706A (en) * 1993-07-14 1995-01-31 Shimadzu Corp Analyzer for nitrogen compound and phosphorus compound in water
CN101294906A (en) * 2008-06-17 2008-10-29 聚光科技(杭州)有限公司 Water quality on-line monitoring method and system
CN203965314U (en) * 2014-07-07 2014-11-26 北京尤思腾科技有限公司 Online total phosphorus Water Test Kits
CN106769938A (en) * 2016-12-30 2017-05-31 中兴仪器(深圳)有限公司 A kind of total nitrogen in-line analyzer and its detection method
CN107340249A (en) * 2017-07-05 2017-11-10 安徽皖仪科技股份有限公司 A kind of method of total nitrogen content in on-line checking environmental water sample
CN208902601U (en) * 2018-08-31 2019-05-24 青岛卓建海洋装备科技有限公司 Seawater total nitrogen concentration test device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
国家海洋局908专项办公室, 海洋出版社 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111337483A (en) * 2020-02-18 2020-06-26 青岛卓建海洋装备科技有限公司 Seawater ammonia nitrogen concentration online detection device and method
CN111562226A (en) * 2020-04-10 2020-08-21 中国科学院西安光学精密机械研究所 Method and system for analyzing total nitrogen and total phosphorus in seawater based on characteristic peak area of absorption spectrum
CN111562226B (en) * 2020-04-10 2021-10-15 中国科学院西安光学精密机械研究所 Method and system for analyzing total nitrogen and total phosphorus in seawater based on characteristic peak area of absorption spectrum

Similar Documents

Publication Publication Date Title
CN208902601U (en) Seawater total nitrogen concentration test device
CN105866088B (en) A kind of device and method of on-line checking Ammonia In Sea Water nitrogen content
CN103439258B (en) A kind of water nutrition in situ detection instrument based on integrated valve terminal device and detection method
CN106404681A (en) Water quality detection method and system
CN108982388A (en) The test method of seawater total nitrogen content
CN106596439A (en) Apparatus and method for simultaneously measuring nitrous acid, ozone and nitrogen dioxide in air
CN205786321U (en) A kind of device of on-line checking Ammonia In Sea Water nitrogen content
CN110220855A (en) A kind of chemical analysis system for total nitrogen
CN106066320A (en) Seawater bacteria detecting system based on multiwavelength laser Induction of bacterial intrinsic fluorescence
CN216560257U (en) Online volatile phenol water quality analyzer
CN206177825U (en) A normal position nutritive salt autoanalysis device for sea water monitoring
CN208091910U (en) A kind of device for analyzing on-line checking Nitrate In Sea Water content based on optofluidic
CN106443035A (en) On-line analytical instrument for monitoring toxicity of water quality and positioning toxic substance and analytical method
CN214011063U (en) Nutritive salt analyzer
CN103512856A (en) Multi-channel on-line water quality analyzer and application method thereof
CN111272685A (en) Automatic analyzer device and method for seawater heavy metal copper
CA2354015A1 (en) Rapid colorimetric method for measuring polymers in aqueous systems
CN204758475U (en) Online ammonia nitrogen analysis appearance of two optical distance analytical approachs
CN202024965U (en) Real-time on-line detecting device for concentration of nitrate ions in seawater
CN111458319A (en) Device and method for online determination of ammonia nitrogen concentration in water body
CN208902597U (en) Seawater nitrite/nitrate detection device
CN111337483A (en) Seawater ammonia nitrogen concentration online detection device and method
CN103472022B (en) The optical fiber sensor device of sulfide concentration and detection method in a kind of on-line checking water quality
CN209055455U (en) A kind of Ultraviolet Photometric Method COD online analyzer
CN212031287U (en) Automatic analyzer for seawater heavy metal copper

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20181211

WD01 Invention patent application deemed withdrawn after publication