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Preliminary study to prepare a reference material of toluene metabolite - o-cresol and benzene metabolite-phenol - in human
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SYSNO ASEP 0054906 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Preliminary study to prepare a reference material of toluene metabolite - o-cresol and benzene metabolite-phenol - in human Title Předběžná studie k přípravě referenčního materiálu metabolitu toluenu – o-kresolu a metabolitu benzenu – fenolu v lidské moči Author(s) Šperlingová, I. (CZ)
Dabrowská, L. (CZ)
Stránský, V. (CZ)
Kučera, Jan (UJF-V) RID, ORCID, SAI
Tichý, M. (CZ)Source Title Accreditation and Quality Assurance - ISSN 0949-1775
Roč. 11, č. 5 (2006), s. 231-235Number of pages 5 s. Language eng - English Country DE - Germany Keywords reference material ; toluene metabolites ; o-cresol Subject RIV CB - Analytical Chemistry, Separation R&D Projects NR7831 GA MZd - Ministry of Health (MZ) CEZ AV0Z10480505 - UJF-V (2005-2011) Annotation The candidate reference material (RM) was prepared by freeze-drying pooled urine samples obtained from healthy persons occupationally exposed to toluene. Homogeneity testing yielded no significant differences of urinary concentrations of o-cresol and phenol in 15 randomly selected units of RM. Stability testing showed no significant changes of concentrations of the above analytes over a period of 6 months. Property (pre-certified) values of phenol and o-cresol concentrations and their uncertainties (9.06 +/- 0.47 mg l(-1) and 1.03 +/- 0.06 mg l(-1), respectively) were estimated from results of a small-scale interlaboratory comparison in which two laboratories participated using four different analytical methods. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2007
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