A method for the detection of common phosphonates in water with different salinities

Abstract

The invention relates to a detection method applicable to common phosphonate esters in water bodies with different salinities, and relates to a detection method for phosphonate esters in water bodies. A detection method suitable for common phosphonate esters in different salinity water bodies is provided, which has the advantages of simple operation, low requirements on instruments and the ability to simultaneously determine four phosphonate esters. A method for separating and measuring the concentration of common phosphonates in water—glyphosate, glufosinate, and aminomethylphosphonic acid 2-aminoethylphosphonic acid by using high-performance liquid chromatography fluorescence method. The specific steps are as follows: using fluorenyl methaneoxycarbonyl chloride as a derivatizing agent to react with phosphonate, and the reaction product enters high performance liquid chromatography for separation and determination after being filtered. It has the advantages of simple operation, low requirements for instruments, short sample determination time, and simultaneous determination of four phosphonate esters, etc., and can be applied to the determination of phosphonate esters in water bodies with different salinities.

Description

technical field [0001] The invention relates to a method for detecting phosphonate in water, in particular to a method for detecting common phosphonate in water with different salinities. Background technique [0002] Organophosphorus is one of the important forms of phosphorus in the ocean and plays a very important role in marine biogeochemical cycles. As a photolysis-resistant, high-temperature-resistant chemically stable C-P bond organic phosphorus, phosphonate is still relatively lacking in various aspects of research. In recent years, C-P bond organophosphorus pesticides represented by glyphosate and glufosinate-ammonium have been widely used all over the world. Accumulation poses a certain threat to environmental safety and human health. On the other hand, biogenic phosphonates represented by 2-aminoethylphosphonic acid widely exist in lower organisms. 2-Aminoethylphosphonic acid can be used as a potential phosphorus source for some organisms in aquatic environment...

AI Technical Summary

Problems solved by technology

However, liquid chromatography-mass spectrometry is expensive and the operation is complicated, so it is not suitable for popularization and use.

In addition, most of the existing phosphonate determination methods are only for the determination of phosphonate in freshwater samples. For samples in coastal areas, estuaries and other areas, there are different levels of salt, which will have a certain impact on the determination results.

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