title: [Determination of glyphosate in air of workplaces by ion chromatography].
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/m(3). The minimum detectable concentration was 0.000 41 mg/m(3) (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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Department of Pharmaceutical Analysis, Shandong Drug And Food Vocational College, Weihai 264210, China.
authors.forename: Ren-nan
authors.initials: RN
authors.lastname: Zhang
authors.forename: Hua-liang
authors.initials: HL
authors.lastname: Liu
authors.forename: Zong-li
authors.initials: ZL
authors.lastname: Huo
authors.forename: Feng
authors.initials: F
authors.lastname: Zhang
authors.forename: Yong-jian
authors.initials: YJ
authors.lastname: Ma
authors.forename: Bao-li
authors.initials: BL
authors.lastname: Zhu
authors.forename: Jian-rui
authors.initials: JR
authors.lastname: Dou
authors.forename: Yi-yang
authors.initials: YY
authors.lastname: Mao
mesh_terms: D000395:Air Pollutants, Occupational / Q000032:analysis*; D002849:Chromatography, Gas; D005998:Glycine / Q000031:analogs & derivatives* / Q000032:analysis; D017132:Workplace; D000097797:Glyphosate
chemical_list: D000395:Air Pollutants, Occupational; D005998:Glycine; D000097797:Glyphosate