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Online analyzer for total phosphorus of water quality and detection method thereof

An analyzer and water quality technology, which is used in the preparation of test samples and the measurement of color/spectral properties. Analyze and avoid the effects of high maintenance costs

Pending Publication Date: 2019-07-05
NANJING HYDRAULIC RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems of reagent metering error caused by the aging deformation of the pump tube caused by the aging deformation of the peristaltic pump existing in the current total phosphorus online analysis instrument, the digestion temperature is high and the detection time is too long. The water quality total phosphorus online analyzer and its detection method are relatively low and the total detection time is short, providing a reliable guarantee for the long-term and accurate monitoring of water quality total phosphorus

Method used

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  • Online analyzer for total phosphorus of water quality and detection method thereof
  • Online analyzer for total phosphorus of water quality and detection method thereof
  • Online analyzer for total phosphorus of water quality and detection method thereof

Examples

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Embodiment 1

[0050] Such as figure 1 As shown, the structure of the water quality total phosphorus online analyzer provided by the present invention mainly includes a reagent metering component M, a digestion reaction component X, a reaction pool component R, a colorimetric photoelectric detection component E and a single-chip microcomputer. In addition, the analyzer is also connected to several peristaltic pumps. For pumping water samples and distilled water. The components are connected through several liquid delivery channels, and the liquid delivery channels include several pipes, joints and valves. The reagent metering component M transports the reagents to the digestion reaction component X and the reaction cell component R respectively through the liquid delivery channel, the digestion reaction component X is connected to the reaction cell component R, and the reaction cell component R is connected to the colorimetric photoelectric detection component E. All peristaltic pumps, elec...

Embodiment 2

[0071] The structure and composition of the water quality total phosphorus online analyzer of this embodiment are the same as those of Embodiment 1.

[0072] The reagent 1 used in this example is 40g / L potassium persulfate solution, which contains 10% 1+1 sulfuric acid (V / V); the composition of reagent 2 is 100g / L ascorbic acid, in order to improve the stability of ascorbic acid, which contains 0.1% 1+1 sulfuric acid (V / V), 0.5% β-mercaptoethanol (V / V); the composition of reagent 3 is to contain 13g ammonium molybdate and 0.35g antimony potassium tartrate per 500mL solution.

[0073] Initial state: Three-way electromagnetic valve (A1-A3), two-way electromagnetic valve D1 remains closed, the right end of three-way electromagnetic valve (L1-L3) is closed, the upper end of the fourth and three-way electromagnetic valve L4 is closed, the fifth and third The right end of the electromagnetic fluid valve L5 is closed; all peristaltic pumps (P1-P4) remain closed. The detection method...

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Abstract

The invention provides an online analyzer for total phosphorus of water quality and a detection method thereof. The analyzer comprises a reagent metering assembly, a digestion reaction assembly, a reaction cell assembly, a colorimetric photoelectric detection assembly and a single chip microcomputer, wherein the reagent metering assembly is connected to the digestion reaction assembly and the reaction cell assembly through a liquid conveying channel, the digestion reaction assembly is connected to the reaction cell assembly through the liquid conveying channel, the reaction cell assembly is also connected to the colorimetric photoelectric detection assembly through the liquid conveying channel, and the single chip microcomputer is used for connecting with the electronic components in eachassembly. The online analyzer for total phosphorus of water quality and the detection method thereof fully automate the steps such as injection, digestion, reaction and colorimetric measurement, can realize automatic, rapid and accurate analysis of total phosphorus content in water, have the advantages such as accurate measurement, good stability and relatively low digestion temperature, and provide reliable guarantee for long-term accurate monitoring of total phosphorus of water quality.

Description

technical field [0001] The invention belongs to the technical field of environmental monitoring, and relates to an on-line water quality analysis instrument, more specifically to an on-line water quality total phosphorus analyzer and a detection method thereof. Background technique [0002] As a nutrient, phosphorus exists in water bodies in various forms such as elemental phosphorus, orthophosphate, and organic phosphorus. It is one of the key nutrients for the growth of aquatic animals and plants, especially algae. my country's surface water environmental quality standard stipulates that the total phosphorus (TP) content of Class III water should not exceed 0.05mg / L. Excessive phosphorus content will cause eutrophication of the water body, causing algal blooms and black and odorous water bodies, such as the Xiangxi River, a tributary of the Yangtze River. Since 2003, Kuyin’s total phosphorus has exceeded the standard, and there have been many "blooms" every year, and the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N1/44
CPCG01N21/31G01N1/44
Inventor 杨博玥张卫孙奕符伟杰叶文斌毛春雷熊陈魏广林薇
Owner NANJING HYDRAULIC RES INST
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