Qualitative analysis of organics in atmospheric particulates by headspace solid phase micro extraction-GC/MS

被引：16

作者：

Khanal, O ^{[1
]}

Shooter, D ^{[1
]}

机构：

[1] Univ Auckland, Sch Geog & Environm Sci, Auckland 1, New Zealand

来源：

ATMOSPHERIC ENVIRONMENT | 2004年 / 38卷 / 40期

关键词：

PM10; vapour pressure; boiling point; carbon number; VOCs;

D O I：

10.1016/j.atmosenv.2004.01.059

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A large number of volatile and semi-volatile organic compounds from atmospheric particulates (PM10) have been identified. We have developed and optimised the use of headspace solid phase microextraction as a sample concentration method for the analysis of organics in PM10 using GC/MS. Headspace organics were found to be produced in maximum abundance on heating the particulate samples at 100degreesC for 30 min. The most useful sample cooling and headspace extraction times using a PDMS 100 mum fibre were found to be 7 and 10 min, respectively. The boiling points of the extracted organics ranged from 40 to 391 degreesC and were found to be normally distributed. However, most of the organics (66%) were found to have their boiling point range between 140 and 240 degreesC. Vapour pressure of the organics ranged from 0.0002 to 10.13 kPa, but 82% were found to be within the range of 0.05-1.0 kPa. Similarly, carbon number varied from C-2-C-24, with 68% of the total number of 86 organics detected being C-8-C-13. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：6917 / 6925

页数：9