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A Method for Determining Glyphosate and Its Metabolite Aminomethyl Phosphonic Acid by Gas Chromatography-Flame Photometric Detection

A Method for Determining Glyphosate and Its Metabolite Aminomethyl Phosphonic Acid by Gas Chromatography-Flame Photometric Detection

Weidong Zhang, Yanru Feng, Li Ma, Jing An, Huayin Zhang, Mengsi Cao, Huaijiao Zhu, Weijun Kang, Kaoqi Lian

J Chromatogr A. 2019 Mar 29;1589:116-121.

PMID: 30587348

Abstract:

As a globally popular herbicide, glyphosate (GLY) and its metabolite aminomethylphosphonic acid (AMPA) pose potential hazards to the ecological environment. In this study, a sensitive and reliable method for detecting GLY and AMPA was utilized to facilitate exposure risk assessment of the analytes in environmental systems such as water and soil. GLY and AMPA were extracted from the sample using a solid-phase extraction (SPE) procedure, derivatized by heptafluorobutyric anhydride and heptafluorobutanol, and detected by gas chromatography-flame photometric detection (GC-FPD). The linearities of GLY and AMPA in the range of 10-1000 ng/mL were good (r=0.9998, r=0.9991), and the limits of quantitation (LOQ) for GLY and AMPA were 0.37 and 0.81 ng/mL, respectively. The method has been successfully applied for detecting GLY and AMPA in water, soil and monitoring the degradation of GLY under different environmental conditions. Simulated migration characteristics of GLY and AMPA in soil were investigated for evaluating the potential hazards of GLY and AMPA to the ecological environment.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP1066519-B	(Aminomethyl)phosphonic acid		1066-51-9	Price

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