名称：填充柱

固定相：聚丁二酸乙醇酯:磷酸:101 硅烷化白色担体 = 5:1.5:100；

规格：2m*4mm

应用：GBZT 300.118-2017 工作场所空气有毒物质测定 第118部分：乙酸酐、马来酸酐 和邻苯二甲酸酐

邻苯二甲酸酐的溶剂洗脱-气相色谱法

空气中的气溶胶态邻苯二甲酸酐用超细玻璃纤维滤纸采集，丙tong洗脱后进样，经气相色谱柱分离， 氢焰离子化检测器检测，以保留时间定性，峰高或峰面积定量。

GBZ/T 300.118-2017 工作场所空气有毒物质测定 第118部分：乙酸酐、马来酸酐 和邻苯二甲酸酐

本标准代替GBZ/T 160.60-2004 工作场所空气有毒物质测定 酸酐类化合物

GBZ/T 300的本部分规定了工作场所空气中乙酸酐的溶剂解吸-气相色谱法、马来酸酐的溶液吸收-液相色谱法和邻苯二甲酸酐的溶剂洗脱-气相色谱法。

本部分适用于工作场所空气中乙酸酐、马来酸酐和邻苯二甲酸酐浓度的检测。

浩瀚色谱（山东）应用技术开发有限公司：空气中邻苯二甲酸酐用玻璃纤维滤纸采集,随即放入预先装有2 ml丙酮的样品瓶中,盖塞,摇匀后用聚丁二酸乙醇酯:磷酸:101 硅烷化白色担体 = 5:1.5:100；填充柱气相色谱(FID)测定。邻苯二甲酸酐浓度在0~200μg/ml范围内线性关系良好,线性方程y=8.9+12.6x(r=0.999 9。检出限为0.39μg/ml,若采集30 L空气样品,则低检出浓度分别为0.026 mg/m3,平均加标回收率99.7%~101.4%,相对标准偏差在1.2%~3.7%。本方法适用于工作场所空气中邻苯二甲酸酐浓度的测定。

工作场所空气中邻苯二甲酸酐测定 测试谱图：




Determination of Phthalic Anhydride in the Air of Workplace
Determination of Phthalic Anhydride in the Air of Workplace Details:

Name: Packed column

Stationary phase: Polyethanol succinate: Phosphoric acid: 101 Silanized white support = 5:1.5:100;

Specification: 2m*4mm

Application: GBZT 300.118-2017 Determination of Toxic Substances in Workplace Air Part 118: Acetic Anhydride, Maleic Anhydride and Phthalic Anhydride

Solvent elution of phthalic anhydride-gas chromatography

The aerosol phthalic anhydride in the air is collected with ultra-fine glass fiber filter paper, and the sample is eluted with acetone and tong. The sample is separated by a gas chromatography column and detected by a hydrogen flame ionization detector to determine the retention time, peak height or peak Quantitative area.



GBZ/T 300.118-2017 Determination of Toxic Substances in Workplace Air Part 118: Acetic Anhydride, Maleic Anhydride and Phthalic Anhydride

This standard replaces GBZ/T 160.60-2004 Determination of toxic substances in workplace air, acid anhydride compounds

This part of GBZ/T 300 specifies the solvent desorption of acetic anhydride in the workplace air-gas chromatography, the solution absorption of maleic anhydride-high performance liquid chromatography and the solvent elution of phthalic anhydride-gas chromatography.

This section applies to the detection of the concentration of acetic anhydride, maleic anhydride and phthalic anhydride in the air of the workplace.

Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd.: The phthalic anhydride in the air is collected with glass fiber filter paper, and then placed in a sample bottle pre-filled with 2 ml of acetone, capped, and shaken with polyethylene succinate. Ester: phosphoric acid: 101 silanized white support = 5: 1.5: 100; packed column gas chromatography (FID) determination. The concentration of phthalic anhydride has a good linear relationship in the range of 0~200μg/ml, the linear equation y=8.9+12.6x(r=0.999 9. The detection limit is 0.39μg/ml, if 30 L air samples are collected, the lowest The detected concentrations were 0.026 mg/m3, the average recovery rate was 99.7%~101.4%, and the relative standard deviation was 1.2%~3.7%. This method is suitable for the determination of the concentration of phthalic anhydride in the air in the workplace.

Determination of Phthalic Anhydride in the Air of Workplace Test Spectra: