|
| 热脱附-气相色谱法测定环境空气中芳烃和卤代烃 |
| To Determine Aromatic Hydrocarbon and Halogenated Hydrocarbon in Ambient Air with Heat Desorption - GC |
| |
| DOI： |
| 中文关键词: 热脱附 - 气相色谱法 芳烃 卤代烃 环境空气 石油化工 |
| 英文关键词: Heat desorption - GC Aromatic hydrocarbon Halogenated hydrocarbon Ambientair Petrochemistryindustry |
| 基金项目: |
|
| 摘要点击次数: 2777 |
| 全文下载次数: 1497 |
| 中文摘要: |
| 建立了热脱附-气相色谱法测定环境空气中9种芳烃和卤代烃方法。阐述了样品管制备、采样袋预处理、现场采样和实验富集等过程。采用保留时间定性、外标法定量。进行了自动热脱附仪的吸附和解吸效率的试验, 各组分的吸附效率均在97 % 以上, 解吸效率达98 1 9 % 。最低检出质量浓度氯乙烯为0.0003 mg/ m 3 、1,2- 二氯乙烷和1,2- 二氯丙烷为0.000 2 mg/ m 3 、苯、甲苯、乙苯、对二甲苯、苯乙烯和邻二甲苯均为0.0001 mg/ m 3 。试图以不更换Tenax TA吸附剂标准冷阱 |
| 英文摘要: |
| Methodto determine nine kindsofaromatic hydrocarbon and halogenated hydrocarbonin ambientair with heatdesorption- GC wasstudied. The procedure aboutsample vitro making,sample bag pre-treat,sampling and enrichmentin-site wasdiscussed. To detect withretentiontime methodforqualitativeanalysis,and withexternal standard methodforquantitativeanalysis. Experiment wasundertakentotesttheeffectofabsorption and de-absorption ofautomatic heatdesorption. Allelements ’ absorptioneffect was morethan 97 % ,theaverage de 2 absorptioneffect was 98.9 %. Thelowestdetection massconcentration wasthat:chloroethane was0.0003 mg/ m 3 ,1,2- dichloroethaneand 1,2-dichloropropane were 0.000 2 mg/ m 3 , benzene, methyl benzene,p- dimethylbenzene, vinylbenzene and odimethylbenzene were all0.0001 mg/ m 3 . Tryto detectthecharacteristicpollutantofethylenein ambientair,withoutchanging Tenax TA absorbentstandardcooltrap,butthetestresult wasnotgood becauseoftheabsorptionofethylene. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
