PMID- 25876492 OWN - NLM STAT- MEDLINE DCOM- 20150928 LR - 20181202 IS - 0253-9624 (Print) IS - 0253-9624 (Linking) VI - 49 IP - 1 DP - 2015 Jan TI - [A investigation of thirdhand smoke pollution in 3 types of places of Nanjing, 2014]. PG - 31-5 AB - OBJECTIVE: To investigate thirdhand smoke (THS) pollution in certain places of Nanjing, as well as to analyze its distribution characteristics. METHODS: From March to May, 2014, we selected 3 types of places (residencies, public places and transportation vehicles) that were close to people's living in Jianye,Yuhua,Jiangning,Xuanwu,Gulou and Pukou districts of Nanjing city.For each of the above 3 types of places, 2-3 smoking and non-smoking (smoking ban) locations were investigated, totally 51 locations, 9-10 samples were collected each location, totally 477 samples. The surface wipe sampling method in conjunction with liquid chromatography-tandem mass spectrometry (LC-MS/MS) was utilized to quantify the levels of nicotine that served as the tracer of THS pollution.One-way ANOVA and t-tests were employed to compare the levels of nicotine collected at different places and locations. RESULTS: Totally 477 samples were collected in this study, of which 27.0% was from residencies (129/477), 61.0% (291/477) from public places and 11.9% (57/477) from transportations. The levels of indoor surface nicotine in smoking residences, public places and transportations were (214 +/- 55),(1 408 +/- 177) and (1 511 +/- 785) microg/m(2), respectively, which were all higher than those in the corresponding non-smoking places ((23 +/- 9),(62 +/- 11), and (46 +/- 15) microg/m(2); t values were 13.79, 13.15, 3.45, respectively. P values were <0.001, <0.001 and 0.006, respectively).In the smoking places, the levels of surface nicotine on walls, desks, sofas, cabinets, door backsides and air conditioning openings were (171 +/- 62),(232 +/- 38),(373 +/- 151),(903 +/- 239), (978 +/- 212), (1 721 +/- 517) microg/m(2) (F = 7.06, P = 0.009).In the smoking condition, the levels of surface nicotine collected from public places were higher (F = 9.25, P = 0.024), while under non-smoking (smoking ban) conditions, the levels of surface nicotine collected from residences were lower (F = 7.88, P < 0.001). CONCLUSION: THS pollution was widespread in public places, residences and transportations in Nanjing city, which was more serious in the smoking environments than non-smoking (smoking ban) environments; the contamination was less serious in non-smoking (smoking ban) private residences; in the smoking condition, the levels of surface nicotine were relatively high at locations close to air conditioning openings, door backsides and cabinets. FAU - Zhang, Shuxing AU - Zhang S AD - Nanjing Cardiomicx Inc, Ltd,Nanjing 211106, China. FAU - Qiao, Shanlei AU - Qiao S FAU - Chen, Minjian AU - Chen M FAU - Xia, Yankai AU - Xia Y FAU - Hang, Bo AU - Hang B FAU - Cheng, Senping AU - Cheng S AD - Email: scheng@genspharma.com. LA - chi PT - Journal Article PL - China TA - Zhonghua Yu Fang Yi Xue Za Zhi JT - Zhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine] JID - 7904962 RN - 0 (Tobacco Smoke Pollution) RN - 6M3C89ZY6R (Nicotine) SB - IM MH - Air Conditioning MH - China MH - *Housing MH - Humans MH - Nicotine MH - *Public Facilities MH - Smoking MH - Tandem Mass Spectrometry MH - *Tobacco Smoke Pollution MH - Transportation EDAT- 2015/04/17 06:00 MHDA- 2015/09/29 06:00 CRDT- 2015/04/17 06:00 PHST- 2015/04/17 06:00 [entrez] PHST- 2015/04/17 06:00 [pubmed] PHST- 2015/09/29 06:00 [medline] PST - ppublish SO - Zhonghua Yu Fang Yi Xue Za Zhi. 2015 Jan;49(1):31-5.