Speciation Analysis of I-129 and I-127 in Aerosols Using Sequential Extraction and Mass Spectrometry Detection

doi:10.1021/acs.analchem.5b01555

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	Speciation Analysis of I-129 and I-127 in Aerosols Using Sequential Extraction and Mass Spectrometry Detection
	Zhang, Luyuan 1; Hou, Xiaolin 1,2; Xu, Sheng 3
	2015-07-07
发表期刊	ANALYTICAL CHEMISTRY
卷号	87 期号:13 页码:6937-6944
文章类型	Article
摘要	A new analytical method has been developed for speciation analysis of I-127 and I-129 in aerosols collected on polypropylene (PP) filter paper. Iodide, iodate, NaOH soluble iodine, and insoluble iodine were separated from aerosols using sequential extraction, chromatography separation, and alkaline ashing and measured using inductive coupled plasma mass spectrometry (ICP-MS) for I-127 and accelerator mass spectrometry (AMS) for I-129. Parameters affecting the leaching efficiency and stability of iodine species, such as leaching time and temperature, amount of alkaline reagent for ashing, ashing temperature and time, and iodine protective agent, were investigated and optimized. It was observed that long time water leaching would change inorganic iodine species due to photochemical oxidation of iodide on the PP filter surface. NaOH leaching can only extract less than 60% of iodine from the studied aerosol filters even under heating, implying that total I-129 in aerosol might be underestimated by NaOH leaching. The addition of a reductive agent significantly reduced the loss of iodine during alkaline asking from more than 35% to 4%, efficiently improving the separation efficiency of iodine in aerosols. Speciation analysis of I-129 and I-127 in aerosol samples collected at Riser, Denmark using the developed method shows that the measured values of total I-129 and I-127 are in good agreement with the sum of all iodine species for each isotope, confirming the reliability of the proposed method. Similar distribution patterns between I-129 and I-127 species show that iodine is enriched in NaOH leachable and insoluble species and depleted in water-soluble species, as observed in all aerosol samples.
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1021/acs.analchem.5b01555
关键词[WOS]	IODINE SPECIATION ; MARINE AEROSOL ; ATMOSPHERIC AEROSOL ; ORGANIC-MATTER ; SAMPLES ; PRECIPITATION ; RADIOIODINE ; ACTIVATION ; CHEMISTRY ; EMISSIONS
收录类别	SCI
语种	英语
WOS研究方向	Chemistry
WOS类目	Chemistry, Analytical
WOS记录号	WOS:000357839700076
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/5070
专题	加速器质谱中心
作者单位	1.Tech Univ Denmark, Ctr Nucl Technol, DK-4000 Roskilde, Denmark 2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian AMS Ctr, Xian 710075, Peoples R China 3.Scottish Univ Environm Res Ctr, E Kilbride G75 0QF, Lanark, Scotland
推荐引用方式 GB/T 7714	Zhang, Luyuan,Hou, Xiaolin,Xu, Sheng. Speciation Analysis of I-129 and I-127 in Aerosols Using Sequential Extraction and Mass Spectrometry Detection[J]. ANALYTICAL CHEMISTRY,2015,87(13):6937-6944.
APA	Zhang, Luyuan,Hou, Xiaolin,&Xu, Sheng.(2015).Speciation Analysis of I-129 and I-127 in Aerosols Using Sequential Extraction and Mass Spectrometry Detection.ANALYTICAL CHEMISTRY,87(13),6937-6944.
MLA	Zhang, Luyuan,et al."Speciation Analysis of I-129 and I-127 in Aerosols Using Sequential Extraction and Mass Spectrometry Detection".ANALYTICAL CHEMISTRY 87.13(2015):6937-6944.