haohan空气有毒物质邻苯二甲酸酐测定聚丁二酸乙醇酯:磷酸填充柱2m*4mm

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
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-高效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。
  GBZ/T 300.118-2017 Determination of Toxic Substances in Workplace Air-Part 118: Acetic Anhydride, Maleic Anhydride and Phthalic Anhydride
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 Anhydrides
This part of GBZ/T 300 specifies solvent desorption of acetic anhydride in workplace air - gas chromatography, solution absorption of maleic anhydride - high performance liquid chromatography and solvent elution of phthalic anhydride - gas chromatography.
This section applies to the detection of acetic anhydride, maleic anhydride and phthalic anhydride concentrations in workplace air.

Chromatographic column: 2m×4mm, polysuccinate:phosphoric acid:101 Silanized white support = 5:1.5:100;
b) Column temperature: 175℃;
c) Temperature of gasification chamber: 220℃;
d) Test room temperature: 220℃;
e) Carrier gas (nitrogen) flow: 25mL/min.