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气相色谱法测定工作场所空气中甲醇
气相色谱法测定工作场所空气中甲醇 详细信息：

名称：填充柱

色谱固定液：5%聚乙二醇
载体：石墨炭黑80-120目

规格：2m*3mm，2m*1/8

型号：5%Carbowax 20M Carbopack B

应用： HJ T33-1999 固定污染源排气中甲醇的测定气相色谱法

浩瀚色谱（山东）应用技术开发有限公司建立顶空-气相色谱技术测定工作场所空气中甲醇的检测方法。方法采用GH-1型溶剂解吸型硅胶管采样,顶空法进样,装有氢火焰离子化检测器FID的气相色谱检测,测定该方法的线性范围、平均值、标准偏差、相对标准偏差和回收率。结果该方法的甲醇质量浓度在140.0 mg/L以内呈线性,线性回归方程y=0.073589x-0.13717,该方法检出限为0.08 mg/L,线性范围为0.08~140 mg/L。其加标回收率为94.5%~105.2%,相对标准偏差为1.45%~5.89%。结论该方法灵敏、操作简便、可实现测定过程的简便化、且准确度高,可以满足工作场所空气中甲醇检测方法的要求。

气相色谱法测定工作场所空气中甲醇  测试谱图：




Determination of Methanol in the Air of Workplace by Gas Chromatography
Gas Chromatography Determination of Methanol in the Air of Workplace Details:

Name: Packed column

Chromatographic stationary liquid: 5% polyethylene glycol
Carrier: Graphite carbon black 80-120 mesh

Specification: 2m*3mm, 2m*1/8

Model: 5% Carbowax 20M Carbopack B

Application: HJ T33-1999 Determination of Methanol in Exhaust from Stationary Pollution Sources Gas Chromatography



Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. established a headspace-gas chromatography technology to determine the detection method of methanol in the air in the workplace. Method GH-1 solvent desorption type silica gel tube was used for sampling, headspace method for sampling, gas chromatographic detection equipped with hydrogen flame ionization detector FID, and the linear range, average value, standard deviation, relative standard deviation and relative standard deviation of the method were determined. Recovery rate. Results The methanol mass concentration of this method was linear within 140.0 mg/L, the linear regression equation y=0.073589x-0.13717, the detection limit of this method was 0.08 mg/L, and the linear range was 0.08~140 mg/L. The recovery rate of standard addition is 94.5%~105.2%, and the relative standard deviation is 1.45%~5.89%. Conclusion The method is sensitive, easy to operate, can realize the simplification of the determination process, and has high accuracy, which can meet the requirements of the method for detecting methanol in the air in the workplace.

Gas Chromatography Method for Determination of Methanol in Workplace Air Test Spectra: 



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