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Cadmium column reduction detection device for full-automatic chemical analyzer

An automatic chemistry and analyzer technology, applied in chemical method analysis, measuring devices, scientific instruments, etc., can solve problems such as inaccurate test results, and achieve the effects of accurate detection, simple operation, and improved detection capabilities.

Inactive Publication Date: 2014-12-03
CHANGCHUN SERIEN INTELLIGENT TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Although the method is simple to operate, excessive hydrazine sulfate will cause excessive reduction of samples with extremely low nitrate concentrations such as seawater and purified water, resulting in inaccurate detection results.

Method used

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  • Cadmium column reduction detection device for full-automatic chemical analyzer

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Embodiment 1

[0009] The present invention will be further described below in conjunction with accompanying drawing:

[0010] As shown in the figure, 1 is a sampling needle, 2 is a three-way valve A, 3 is a common connecting pipe, 4 is a cadmium column, 5 is a three-way valve B, 6 is a plunger pump, 7 is a solenoid valve, 8 is a vacuum pump, 9 is a three-way valve C, 10 is a sampling needle and liquid path cleaning liquid tank, and 11 is a cadmium column cleaning liquid tank.

[0011] The cadmium column reduction detection system introduces the cadmium column into the liquid circuit through the redesign of the liquid circuit part on the basis of the existing automatic chemical analyzer. When the cadmium column reduction method is required for detection, it controls the corresponding solenoid valve and The plunger pump introduces the sample to be tested into the cadmium column unit to realize the reduction of the sample to be tested. After the measurement is over, the cadmium column is clea...

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Abstract

The invention discloses a cadmium column reduction detection device for a full-automatic chemical analyzer, belonging to the technical field of biochemical equipment. The cadmium column reduction detection device is characterized in that a three-way valve is arranged between a sampling needle and a common connecting pipe; a three-way valve is arranged between a plunger pump and the common connecting pipe; a cadmium column is communicated with the two three-way valves; and a vacuum pump is respectively communicated with the sampling needle, a liquid path cleaning solution tank and a cadmium column cleaning solution tank through the three-way valves. The cadmium column reduction detection device has the beneficial effects that the full-automatic chemical analyzer can realize nitrate detection by adopting a cadmium column reduction method, the detection capacity of the chemical analyzer is improved, and the automatic detection process of the cadmium column reduction method is realized. The detection device has the advantages of simplicity in operation and accuracy in detection and is particularly suitable for detecting seawater, drinking water and other water with low nitrate content.

Description

technical field [0001] The invention belongs to the technical field of chemical analysis equipment, and relates to an improvement of a water quality detection device used for seawater, drinking water and the like with low nitrate content. Background technique [0002] The automatic chemical analyzer is an instrument used for quantitative detection and analysis of surface water, seawater, sewage, soil / plant extracts, etc. It can detect nitrate, nitrite, ammonia nitrogen, phosphate, The content of various components such as potassium ions is an important reference for evaluating the chemical composition of the sample. Fully automatic chemical analyzer is a multidisciplinary analysis technology integrating contemporary chemistry, optics, chemometrics and computer technology. [0003] Nitrate nitrogen is the final oxidation product of nitrogen-containing organic compounds in water. Nitrate in drinking water can cause cancer to the human body and is an important pollution indica...

Claims

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Application Information

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IPC IPC(8): G01N35/00G01N31/00
Inventor 董平吴再辉贾赞东史健松石鑫
Owner CHANGCHUN SERIEN INTELLIGENT TECH
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