Device and method for measuring total chromium in water by enrichment and elution flow injection chemiluminescence

A chemiluminescence, flow injection technology, applied in chemiluminescence/bioluminescence, analysis by chemical reaction of materials, etc., can solve the problems of low chemiluminescence detection efficiency, secondary pollution, harsh conditions, etc. Reflective efficiency, strong adsorption capacity, large surface area
CN103837525BActive Publication Date: 2016-01-20OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
OCEANOGRAPHIC INSTR RES INST SHANDONG ACAD OF SCI
Publication Date
2016-01-20

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Abstract

The invention provides a device and a method for measuring total chromium of a water body by a flow-injection chemiluminiscence method by enriching and eluting. The method comprises the following steps: enriching total chromium based on a magnetic nano material, then eluting, forming a complex by eluted total chromium and dimethyl dimethoxy silicane, and oxidizing the complex and peroxided oxalate so as to generate chemiluminiscence, wherein the chemiluminiscence intensity has linear relationship with the concentration of the total chromium in the water body. A method for measuring total chromium of the water body by the flow-injection chemiluminiscence method by enriching and eluting of the magnetic nano material is established by utilizing an enriching-eluting-complexing-chemiluminiscence technique. The characteristics of rapidity, simplicity, convenience and high accuracy can be achieved in the determination of total chromium in the water body.
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Description

technical field

[0001] The invention relates to the technical field of environmental chemical monitoring, in particular to a method for measuring heavy metals in water. Background technique

[0002] Chromium is one of the important contents in water environment monitoring. At present, the commonly used methods for determining total chromium in water include diphenylcarbazide spectrophotometry and flameless atomic absorption spectrometry. Some methods also introduce harmful organic solvents to varying degrees, resulting in a large amount of waste of reagents and secondary pollution. At the same time, most methods require expensive and large-scale instruments. In addition, the method adopts the mode of on-site sampling and laboratory analysis, that is, on-site and real-time measurement cannot be realized, and other interfering substances are easily introduced during sample transportation and processing, which affects the accuracy of analysis. sex. Therefore, it is impossibl...

Claims

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