頂空氣相色譜法測定工作場所空氣中苦味酸
發(fā)布時間：2019-01-09 01:45
【摘要】：[目的]建立頂空氣相色譜測定工作場所空氣中苦味酸的方法。[方法]用微孔濾膜采集空氣中苦味酸,純水洗脫,次氯酸鈉衍生頂空氣相色譜電子捕獲檢測器檢測。[結果]苦味酸濃度在0.01~1.00μg/m L范圍內線性關系良好(r=0.999 7),本法檢出限為0.000 06μg/m L(進樣量為100μL),最低檢出濃度為0.000 008 mg/m3(采樣體積為75 L,解吸液體積為10 m L),相對標準偏差為1.42%~1.61%,平均回收率為97.9%~99.7%,平均洗脫效率為95.9%~97.3%,采樣效率為95.1%~97.1%,微孔濾膜吸收10μg苦味酸,在室溫條件下保存,至少可穩(wěn)定15 d。[結論]該方法各項指標均符合GBZ/T 210.4—2008《職業(yè)衛(wèi)生標準制定指南第4部分:工作場所空氣中化學物質測定方法》的要求,適用于工作場所空氣中苦味酸的檢測。
[Abstract]:Objective to establish a headspace gas chromatography method for the determination of picric acid in workplace air. [methods] picric acid in air was collected by microporous membrane, eluted with pure water, and detected by electron capture detector (ECD) with sodium hypochlorite derivative headspace gas chromatography. [results] the linear range of picric acid concentration was 0.01 渭 g / mL (r = 0.999 7). The detection limit of this method was 0.000 渭 g / mL (injection volume was 100 渭 L),). The lowest detectable concentration was 0.000 mg/m3 (sample volume was 75 L, desorption volume was 10 m L), relative standard deviation was 1.42 and 1.61%), and the average recovery was 97.9 and 99.7, respectively. The average elution efficiency was 95.9% and 97.3%, the sampling efficiency was 95.1% and 97.1%. The microporous membrane absorbed 10 渭 g picric acid and kept at room temperature for at least 15 days. [conclusion] all the indexes of this method are in line with the requirements of GBZ/T 210.4-2008 guidelines for the Establishment of Occupational Health Standards part 4: methods for the determination of Chemical substances in Workplace Air, which is suitable for the detection of picric acid in workplace air.
【作者單位】： 湖州市疾病預防控制中心;
【分類號】：R134.4
本文編號：2405177
[Abstract]:Objective to establish a headspace gas chromatography method for the determination of picric acid in workplace air. [methods] picric acid in air was collected by microporous membrane, eluted with pure water, and detected by electron capture detector (ECD) with sodium hypochlorite derivative headspace gas chromatography. [results] the linear range of picric acid concentration was 0.01 渭 g / mL (r = 0.999 7). The detection limit of this method was 0.000 渭 g / mL (injection volume was 100 渭 L),). The lowest detectable concentration was 0.000 mg/m3 (sample volume was 75 L, desorption volume was 10 m L), relative standard deviation was 1.42 and 1.61%), and the average recovery was 97.9 and 99.7, respectively. The average elution efficiency was 95.9% and 97.3%, the sampling efficiency was 95.1% and 97.1%. The microporous membrane absorbed 10 渭 g picric acid and kept at room temperature for at least 15 days. [conclusion] all the indexes of this method are in line with the requirements of GBZ/T 210.4-2008 guidelines for the Establishment of Occupational Health Standards part 4: methods for the determination of Chemical substances in Workplace Air, which is suitable for the detection of picric acid in workplace air.
【作者單位】： 湖州市疾病預防控制中心;
【分類號】：R134.4
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