产品名称：	5%Carbowax 20M Carbopack B填充柱 检测车间空气中甲醇的改进气相色谱法
产品型号：	5%Carbowax 20M Carbopack B填充柱
品牌：	1356
产品数量：
产品单价：	面议
日期:	2021-12-30

5%Carbowax 20M Carbopack B填充柱 检测车间空气中甲醇的改进气相色谱法的详细资料

检测车间空气中甲醇的改进气相色谱法
检测车间空气中甲醇的改进气相色谱法 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对车间空气中甲醇浓度的测定,在《车间空气监测检验方法》(以下称标准法)中介绍了两种方法,一是变色酸比色法,一是气相色谱法。通过实验和应用,认为比色法不够理想,不但准确度差,而且精密度也很差,平行误差高达±20—30%,或更高;所用试剂易变质失效。标准法中的气相色谱法采用气体直接进样。由于注射器的毛玻璃对甲醇的吸附作用,以及仪器的灵敏度所限,认为气体直接进样不利于实际。


检测车间空气中甲醇的改进气相色谱法  测试谱图：



Improved Gas Chromatography Method for Detecting Methanol in the Air of Workshop
Improved Gas Chromatography Method for Detecting Methanol in the Air of Workshop 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. introduced two methods in the "Workshop Air Monitoring and Inspection Method" (hereinafter referred to as the standard method) in the determination of the methanol concentration in the workshop air, one is the colorimetric method, the other is Gas chromatography. Through experiments and applications, it is believed that the colorimetric method is not ideal, not only the accuracy is poor, but also the precision is also poor, the parallel error is as high as ±20-30%, or higher; the reagents used are prone to deterioration and failure. Gas chromatography in the standard method uses direct gas injection. Due to the adsorption effect of the frosted glass of the syringe on methanol and the limitation of the sensitivity of the instrument, it is considered that the direct injection of gas is not conducive to the actual situation.


Improved gas chromatography method for detecting methanol in the air of the workshop Test spectrum: