환경대기 중 Trimethylamine(TMA)의 측정 : Tedlar bag 방식의 채취와 SPME 분석법의 특성연구

Abstract

Trimethylamine (TMA) is one of the difficult odorous compounds for the collection and analysis.for its sampling, these methods also suffer from difficulties involved in sample treatment and operationalprocedures. Hence, as an ancillary approach to measure TMA, we investigated the combination of bag samplingand SPME analysis for TMA measurements. For the purpose of our study, we investigated the following threesubjects: 1) temporal variability of standard storage, 2) bag loss efect of TMS, and 3) TMA loss due to repetitiveanalysis of an identical bag sample. According to our storage test up to 7 or 20 dyas, TMA loss were found. Corresponding authorPhone : +82-(0)2-499-9151 Fax : +82-(0)2-499-2354E-mail: khkim@sejong.ac.kr .... . Trimethylamine (TMA). .. : Tedlar bag ... ... SPME .... .. .. 97Vol. 19, No. 1, 2006to occur up to 40 to 50% within relatively short period of up to 48 hrs depending on its concentration ranges.When the tests were made for bag loss by transferring TMA standards across different size bags, we wereable to find that the extent of bag loss are not significant with 5 to 20% loss rate. Finally, the TMA sorptiveloss via its exposure to SPME fiber was generally estimated to run from 2 to 3%.