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Speciation Analysis of I-129 and I-127 in Aerosols Using Sequential Extraction and Mass Spectrometry Detection
Zhang, Luyuan1; Hou, Xiaolin1,2; Xu, Sheng3
2015-07-07
Source PublicationANALYTICAL CHEMISTRY
Volume87Issue:13Pages:6937-6944
SubtypeArticle
AbstractA 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 HeadingsScience & Technology ; Physical Sciences
DOI10.1021/acs.analchem.5b01555
WOS KeywordIODINE SPECIATION ; MARINE AEROSOL ; ATMOSPHERIC AEROSOL ; ORGANIC-MATTER ; SAMPLES ; PRECIPITATION ; RADIOIODINE ; ACTIVATION ; CHEMISTRY ; EMISSIONS
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Analytical
WOS IDWOS:000357839700076
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Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5070
Collection加速器质谱中心
Affiliation1.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
Recommended Citation
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.
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