5%Carbowax 20M Carbopack B 工作場(chǎng)所空氣中甲醇測(cè)定石墨化碳黑填充柱

，2m*1/8

型號(hào)：5%Carbowax 20M Carbopack B

應(yīng)用： HJ T33-1999 固定污染源排氣中甲醇的測(cè)定氣相色譜法

浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司建立空氣中甲醇測(cè)定的毛細(xì)管柱氣相色譜法.方法 采用硅膠管吸附空氣中甲醇,經(jīng)水解吸,用5%Carbowax 20M Carbopack B柱氣相色譜儀測(cè)定.結(jié)果 甲醇濃度在0～250 μg/ml范圍內(nèi)線性關(guān)系良好,線性方程為y=5.79x+25.67,相關(guān)系數(shù)r=0.999 7,檢出限為0.10 μg/ml,若采集1.5 L空氣樣品,則低檢出濃度為0.07 mg/m3,平均加標(biāo)回收率91.91％～97.09％.結(jié)論 本方法靈敏、準(zhǔn)確,適用于工作場(chǎng)所空氣中甲醇的測(cè)定.

工作場(chǎng)所空氣中甲醇測(cè)定石墨化碳黑填充柱  測(cè)試譜圖：



Graphitized carbon black packed column for determination of methanol in the air of workplace
Graphitized Carbon Black Packed Column for Determination of Methanol in Workplace Air 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 capillary column gas chromatography method for the determination of methanol in the air. The method uses a silica gel tube to absorb the methanol in the air, after hydrolysis and adsorption, it is determined with a 5% Carbowax 20M Carbopack B column gas chromatograph. Result methanol The concentration has a good linear relationship in the range of 0～250 μg/ml, the linear equation is y=5.79x+25.67, the correlation coefficient is r=0.999 7, and the detection limit is 0.10 μg/ml. If 1.5 L air samples are collected, the lowest detection The concentration was 0.07 mg/m3, and the average recovery rate was 91.91%～97.09%. Conclusion This method is sensitive and accurate, and is suitable for the determination of methanol in the air of workplaces.

Determination of Graphitized Carbon Black Packed Column with Methanol in the Workplace Air Test Spectrum: