[Determination of low concentration VOCs in air by a newly designed needle trap device]

Huan Jing Ke Xue. 2011 Dec;32(12):3613-6.
[Article in Chinese]

Abstract

Targeting on the problem of atmospheric VOCs that are presenting low concentration and difficult for sampling, a newly designed needle trap device with carboxen 1000 as a sorbent material was developed. The main advantages of needle trap device are the simple methodology,the easiness and the rapidity of the analysis coupling with GC-MS. No solvent was used in all experiments. Volatile analytes benzene, toluene, ethylbenzene and xylenes (BTEX) were chosen as target compounds to validate this device from theory to real application. The experimental parameters as breakthrough volume of stripping gas were investigated. LOD ranges was obtained at 0.05 ng x mL(-1), and the standard recovery was from 86.5% to 110.5% respectively. Needle trap device is suitable for sampling in field.

Publication types

  • English Abstract
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Air Pollutants / analysis*
  • Benzene / analysis
  • Chemical Fractionation / instrumentation*
  • Chemical Fractionation / methods
  • Gas Chromatography-Mass Spectrometry / instrumentation
  • Gas Chromatography-Mass Spectrometry / methods*
  • Needles*
  • Toluene / analysis
  • Volatile Organic Compounds / analysis*
  • Xylenes / analysis

Substances

  • Air Pollutants
  • Volatile Organic Compounds
  • Xylenes
  • Toluene
  • Benzene