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Determination of glyphosate in air of workplaces by ion chromatography
Author(s): ZHANG Rennan, LIU Hualiang, HUO Zongli, ZHANG Feng, MA Yongjian, ZHU Baoli, ZUO Jianrui, MAO Yiyang
Pages: 779-
781
Year: 2013
Issue:
10
Journal: Chinese Journal of Industrial Hygiene and Occupational Diseases
Keyword: Glyphosate; Chromatography; Ion;
Abstract: Objective To establish a method for determining glyphosate in the air of workplaces by ion chromatography.Methods Ultra-fine glass fiber filter paper was used to collect glyphosate from the workplace air.After being ultrasonically eluted with deionized water,samples were determined by ion chromatography using a conductivity detector.Results Within the range of 0.05-1.00 mg/L,a linear relationship was found with a limit of detection of 0.003 mg/m3.The minimum detectable concentration was 0.000 41 mg/m3 (calculated by sampling 75 L of air).For three different concentrations of glyphosate,the intra-batch relative standard deviations (RSDs) were 1.8%,1.6%,and 0.8%,respectively,and the inter-batch RSDs were 1.9%,2.1%,and 2.2%,respectively.The recovery rate ranged from 94.8% to 97.4%.The elution efficiency ranged from 94.5% to 96.7%.The sampling efficiency was 100%.Samples could be stored at room temperature for at least 7 days.Conclusion This presented method meets the requirements of Guide for establishing occupational health standards-Part 4:Determination methods of air chemicals in workplace and is feasible for determination of glyphosate in the air of workplaces.
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