DOI: 10.1016/j.atmosenv.2013.10.035
Scopus记录号: 2-s2.0-84887510978
论文题名: Multi-scale analysis of the occurrence of Pb, Cr and Mn in the NIST standards: Urban dust (SRM 1649a) and indoor dust (SRM 2584)
作者: Jiang M ; , Nakamatsu Y ; , Jensen K ; A ; , Utsunomiya S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 82 起始页码: 364
结束页码: 374
语种: 英语
英文关键词: Metal speciation
; SEM
; TEM
; XANES
Scopus关键词: Chromates
; Chromite
; Chromite deposits
; Dust
; Electron probe microanalysis
; Gypsum
; Kaolinite
; Lead
; Metal nanoparticles
; Metals
; Mica
; Quartz
; Radiation effects
; Respiratory system
; Scanning electron microscopy
; Statistics
; Sulfur compounds
; Transmission electron microscopy
; X ray diffraction analysis
; Ambient particulate Matter
; Individual particle analysis
; Metal speciation
; National Institute of Standards and Technology
; Powder X ray diffraction
; Standard reference materials (SRMs)
; X-ray absorption near-edge structure
; XANES
; Manganese
; aluminum silicate
; calcium carbonate
; calcium sulfate
; carbonic acid
; carbonic acid derivative
; chromium
; lead
; manganese
; silicon dioxide
; sulfate
; titanium
; zinc
; atmospheric pollution
; chromite
; chromium
; concentration (composition)
; dust
; health impact
; indoor air
; lead
; manganese
; particulate matter
; respiratory disease
; speciation (chemistry)
; standard (regulation)
; sulfate
; urban area
; article
; dust
; electron probe microanalysis
; priority journal
; scanning electron microscopy
; transmission electron microscopy
; urban area
; X ray diffraction
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Adverse health effects of ambient particulate matters are closely related to the speciation of the constituting organic matters and toxic metals. To determine multi-parameters of the metal speciation in urban and indoor dusts, we have performed systematic bulk- to nano-scale ("multi-scale") analysis on the speciation of Pb, Mn, and Cr in two National Institute of Standards and Technology (NIST) standard reference materials (SRMs): urban dust (SRM 1649a) and indoor dust (SRM 2584), utilizing X-ray absorption near-edge structure, powder X-ray diffraction analysis, electron microprobe analysis, scanning electron microscopy, and transmission electron microscopy.Major crystalline phases are quartz, gypsum, kaolinite, and muscovite in SRM 1649a, while quartz, gypsum, calcite, and possibly muscovite (or chabazite) in SRM 2584. A number of Pb sulfate nanoparticles (50-200nm) occur in SRM 1649a, whereas micron-sized Pb carbonate is present containing various concentrations of Zn and Ti in the complex texture in SRM 2584. Relatively soluble Mn(II) sulfate is the bulk-averaged Mn speciation in SRM 1649a, although discrete Mn sulfate particles are not characterized by individual particle analysis, implying the diluted Mn distribution within other sulfate. In SRM 2584, Mn speciation includes a mixture of oxides and carbonates, and trace Mn in chromite. Chromite (FeCr2O4) is the major Cr speciation in SRM1694a, while unidentified Cr(III) phases with minor chromite and Pb chromate are present in SRM 2584, among which the Pb chromate is composed of Cr(VI). A significant number of the metal-bearing particles are distributed to the submicron-size fraction in the urban dust, SRM 1649a, suggesting that these metal nanoparticles can potentially penetrate into the deep respiratory system. This study demonstrates that multi-scale analysis combining nano and bulk analytical techniques is a powerful approach to investigate the multi-parameters of metal-bearing nanoparticles in heterogeneous PM samples. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81039
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Chemistry, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan; National Research Centre for the Working Environment, Lersø Parkallé 105, DK-2100 Copenhagen, Denmark
Recommended Citation:
Jiang M,, Nakamatsu Y,, Jensen K,et al. Multi-scale analysis of the occurrence of Pb, Cr and Mn in the NIST standards: Urban dust (SRM 1649a) and indoor dust (SRM 2584)[J]. Atmospheric Environment,2014-01-01,82