PMID- 25269267 OWN - NLM STAT- MEDLINE DCOM- 20150901 LR - 20190923 IS - 1000-8713 (Print) IS - 1000-8713 (Linking) VI - 32 IP - 6 DP - 2014 Jun TI - [Determination of urinary cotinine of children exposed to passive smoking by stable isotope dilution gas chromatography-triple quadrupole mass spectrometry]. PG - 658-61 AB - An analytical method for the determination of urinary cotinine of children exposed to passive smoking was established based on stable isotope dilution by gas chromatography-triple quadrupole mass spectrometry (GC-MS/MS). The samples were extracted and purified with chloroform. The extracts were determined by GC-MS/MS in multiple reaction monitoring (MRM) mode. The cotinine-d3 as an isotope internal standard was applied to quantify and confirm the urinary cotinine of children exposed to passive smoking. The method had a good linearity from 0.1 microg/L to 10 microg/L with the correlation coefficient (r) > 0.998. The recoveries of the cotinine in blank urine were from 79.2% to 112.8% at spiked levels of 0.1, 1.0 and 10 microg/ L, with relative standard deviations (RSDs) from 2.1% to 5. 8%. The limit of quantification ( LOQ) of the method was 0.1 microg/L. The developed method is accurate, sensitive, rapid and can be applied to detect urinary cotinine of children exposed to passive smoking at home. FAU - Wang, Yun AU - Wang Y FAU - Huang, Zhiqiang AU - Huang Z FAU - Ye, Ying AU - Ye Y FAU - Zhang, Ying AU - Zhang Y FAU - Xiao, Shuiyuan AU - Xiao S LA - chi PT - Journal Article PL - China TA - Se Pu JT - Se pu = Chinese journal of chromatography JID - 9424804 RN - 0 (Isotopes) RN - 0 (Tobacco Smoke Pollution) RN - K5161X06LL (Cotinine) SB - IM MH - Child MH - Cotinine/*urine MH - Gas Chromatography-Mass Spectrometry MH - Humans MH - Isotopes MH - Tandem Mass Spectrometry MH - *Tobacco Smoke Pollution EDAT- 2014/10/02 06:00 MHDA- 2015/09/02 06:00 CRDT- 2014/10/02 06:00 PHST- 2014/10/02 06:00 [entrez] PHST- 2014/10/02 06:00 [pubmed] PHST- 2015/09/02 06:00 [medline] AID - 10.3724/sp.j.1123.2014.01023 [doi] PST - ppublish SO - Se Pu. 2014 Jun;32(6):658-61. doi: 10.3724/sp.j.1123.2014.01023.