title: Suitability of different polymer bags for storage of volatile sulphur compounds relevant to breath analysis.
abstract: 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%).
authors.affiliation: Institute of Nuclear Physics PAN, Kraków, Poland. Pawel.Mochalski@ifj.edu.pl
authors.forename: Paweł
authors.initials: P
authors.lastname: Mochalski
authors.forename: Beata
authors.initials: B
authors.lastname: Wzorek
authors.forename: Ireneusz
authors.initials: I
authors.lastname: Sliwka
authors.forename: Anton
authors.initials: A
authors.lastname: Amann
mesh_terms: D001944:Breath Tests / Q000295:instrumentation*; D004355:Drug Stability; D017743:Equipment Reuse; D008401:Gas Chromatography-Mass Spectrometry; D006801:Humans; D011092:Polyethylene Glycols / Q000737:chemistry; D011093:Polyethylene Terephthalates; D011138:Polytetrafluoroethylene / Q000737:chemistry; D052617:Solid Phase Microextraction; D013048:Specimen Handling / Q000295:instrumentation*; D013457:Sulfur Compounds / Q000032:analysis*; D013997:Time Factors; D014835:Volatilization
chemical_list: D011093:Polyethylene Terephthalates; D013457:Sulfur Compounds; D011092:Polyethylene Glycols; D011138:Polytetrafluoroethylene