کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1217538 | 967112 | 2009 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Suitability of different polymer bags for storage of volatile sulphur compounds relevant to breath analysis Suitability of different polymer bags for storage of volatile sulphur compounds relevant to breath analysis](/preview/png/1217538.png)
Suitability of five polymer sampling containers (Nalophan, transparent Tedlar, black layered Tedlar, Teflon and FlexFoil) for sampling and storage of six relevant to breath analysis volatile sulphur compounds: H2S, MeSH, EtSH, COS, DMS and CS2 was studied using solid phase microextraction (SPME) and gas chromatography coupled with mass spectrometry (GC–MS). Investigations were made with respect to the several factors like: recovery, background, influence of light, ageing effect and matrix effects. Additionally, the optimal reusability conditions were established. Findings suggest analyzing the breath VSCs within 6 h after sampling. Flexfoil bags were found to be the best choice for the VSCs storage up to 24 h (recovery about 90% with the exception of DMS). For shorter storing times (6–8 h) transparent Tedlar is a good alternative for Flexfoil (losses up to 10%).
Journal: Journal of Chromatography B - Volume 877, Issue 3, 15 January 2009, Pages 189–196