瓦里安工作场所中甲醇浓度测定石墨化碳黑填充柱5%Carbowax 20M Carbopack B

浩瀚色谱（山东）应用技术开发有限公司以乙醇作解吸液,石墨化碳黑填充柱,采用气相色谱法测定空气中的甲醇.结果显示,方法标准曲线方程的相关系数r=0.999 8,检出限为0.64μg/ml.采样体积为1.5 L的*低检出浓度为0.43 mg/m3,精密度RSD≤2.3％,准确度为99.8％,硅胶管的解吸效率为94.4％,干扰实验结果提示甲醇的色谱峰与17种醇类、酮类、酯类、芳香烃类等可能共存物质的色谱峰的分离度＞1.5.本法分离效率、精密度、准确度高,利于提高色谱柱和检测器的使用寿命,适用于作业场所空气中甲醇的检测.
 

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

 
Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. uses ethanol as the desorption solution, graphitized carbon black packed column, and uses gas chromatography to determine the methanol in the air. The results show that the correlation coefficient of the method standard curve equation is r=0.999 8, which is detected. The limit is 0.64μg/ml. The minimum detectable concentration with a sampling volume of 1.5 L is 0.43 mg/m3, the precision RSD is ≤2.3%, the accuracy is 99.8%, the desorption efficiency of the silicone tube is 94.4%, and the interference experiment results suggest methanol The separation of the chromatographic peak of the chromatographic peak and the chromatographic peak of 17 alcohols, ketones, esters, aromatic hydrocarbons and other possible coexisting substances>1.5. This method has high separation efficiency, precision and accuracy, which is beneficial to improve the chromatographic column and detector The service life is suitable for the detection of methanol in the air in the workplace.

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 Gas from Stationary Pollution Sources Gas Chromatography