Suitability of different polymer bags for storage of volatile sulphur compounds relevant to breath analysis

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• 作者：Paweł ; Mochalski ; Beata Wzorek ; Ireneusz &#x15a ; liwka ; Anton Amann
• 关键词：Breath analysis ; Volatile sulphur compounds ; Storage stability ; Tedlar ; Teflon ; Nalophan ; SPME
• 刊名：Journal of Chromatography B, Analytical Technologies in the Biomedical and Life Sciences
• 出版年：2009
• 出版时间：15 January 2009
• 年：2009
• 卷：877
• 期：3
• 页码：189-196
• 全文大小：633 K

文摘

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 % ).