不同聚合物袋用于储存与呼吸分析相关的挥发性硫化合物的适用性。
Suitability of different polymer bags for storage of volatile sulphur compounds relevant to breath analysis.
作者信息
Mochalski Paweł, Wzorek Beata, Sliwka Ireneusz, Amann Anton
机构信息
Institute of Nuclear Physics PAN, Kraków, Poland.
出版信息
J Chromatogr B Analyt Technol Biomed Life Sci. 2009 Jan 15;877(3):189-96. doi: 10.1016/j.jchromb.2008.12.003. Epub 2008 Dec 9.
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: H(2)S, MeSH, EtSH, COS, DMS and CS(2) 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 6h after sampling. Flexfoil bags were found to be the best choice for the VSCs storage up to 24h (recovery about 90% with the exception of DMS). For shorter storing times (6-8h) transparent Tedlar is a good alternative for Flexfoil (losses up to 10%).
使用固相微萃取（SPME）和气相色谱-质谱联用（GC-MS）研究了五种聚合物采样容器（那洛芬、透明泰德拉、黑色分层泰德拉、特氟龙和FlexFoil）对六种与呼吸分析相关的挥发性硫化合物：硫化氢（H₂S）、甲硫醇（MeSH）、乙硫醇（EtSH）、羰基硫（COS）、二甲基硫（DMS）和二硫化碳（CS₂）的采样和储存适用性。针对回收率、背景、光照影响、老化效应和基质效应等几个因素进行了调查。此外，还确定了最佳的可重复使用条件。研究结果表明，采样后6小时内分析呼出的挥发性硫化合物。发现Flexfoil袋是储存挥发性硫化合物长达24小时的最佳选择（除DMS外，回收率约为90%）。对于较短的储存时间（6-8小时），透明泰德拉是Flexfoil的一个不错替代品（损失高达10%）。
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