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学科主题: 公共卫生
题名:
Speciation Analysis of Lead and Its Isotopes in Fine Particulate Matters in Beijing by ICP-MS
作者: Chen Xi1; Wang Xiao-yan1,2; Liu Yang3; Zhang Jing-hua3; Liu Jing-xiu4; Yan Lai-lai1; Wang Jing-yu1,2
关键词: ICP-MS ; Speciation analysis ; Lead isotopes ; Fine particle matters
刊名: SPECTROSCOPY AND SPECTRAL ANALYSIS
发表日期: 2009-02-01
DOI: 10.3964/j.issn.1000-0593(2009)02-0515-04
卷: 29, 期:2, 页:515-518
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Spectroscopy
研究领域[WOS]: Spectroscopy
关键词[WOS]: HEAVY-METALS ; FRACTIONATION ; SEDIMENTS ; ELEMENTS ; BLOOD ; SOIL
英文摘要:

Fine particulate matters (PM(2.5)) collected in Beijing during a period from September 2005 to May 2006 were studied. Sequential extraction procedures were applied to divide the total lead into three fractions, i.e. water soluble, liposoluble and in-soluble lead. Lead concentrations and their isotopes in each fraction were then determined by inductively coupled plasma mass spectrometry (ICP-MS). Lead standard reference GBW 09133 was used to investigate the accuracy of lead concentration determination and SRM 981 was used to correct the mass discrimination and instrumental drift. The obtained results showed that the analytical precision of lead isotope ratios for SRM 981 of seven repeat measurements at lead concentration of 10 ng . mL(-1) came to about 0. 34, 0. 27 and 0. 24 percent for the (206)Pb/(204)Pb, (206)Pb/(207)Pb and (206)Pb/(208)Pb ratios, respectively. In Beijing, the mass concentrations for PM(2.5) and lead of ambient air were 125. 56 and 0. 415 mu g . m(-3) respectively for winter 2005, and 201. 6 and 0. 475 mu g . m(-3) respectively for spring 2006 on average, resembling those published results. It was indicated that the lead in the PM(2.5) existed mainly in insoluble form, which accounted for 78. 99 %, while water soluble lead and liposoluble lead amount were 20-69% and 0. 32%, respectively. The mean values of (206)Pb/(207)Pb ratio for water soluble species and insoluble species were 1. 1526 +/- 0. 009 3 and 1. 219 3 +/- 0. 009 1 respectively, with a significant difference (Student′s test; P<0.01) statically. By comparing (206)Pb/(207)Pb ratios between biological specimen and ambient air samples, the (206)Pb/(207)Pb ratios in water soluble fraction coincided very well with those in adult blood, therefore, water soluble lead but not insoluble lead in PM(2.5) may be the potential source of adults blood lead in Beijing. More attention should be paid to the effect of soluble lead in fine particle matters on human health.

语种: 英语
WOS记录号: WOS:000263152300055
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/63353
Appears in Collections:北京大学公共卫生学院_期刊论文

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作者单位: 1.Peking Univ, Sch Publ Hlth, Beijing 100083, Peoples R China
2.Beijing Ctr Phys & Chem Anal, Beijing 100089, Peoples R China
3.Peking Univ, Lab Biomet, Ctr Med & Hlth Anal, Beijing 100083, Peoples R China
4.Dongcheng Dist Ctr Dis Prevent & Control, Beijing 100013, Peoples R China

Recommended Citation:
Chen Xi,Wang Xiao-yan,Liu Yang,et al. Speciation Analysis of Lead and Its Isotopes in Fine Particulate Matters in Beijing by ICP-MS[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2009,29(2):515-518.
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