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DOI10.1021/es1024228
Natural Chlorate in the Environment: Application of a New IC-ESI/MS/MS Method with a (ClO3-)-O-18 Internal Standard
Rao, Balaji1; Hatzinger, Paul B.2; Bohlke, John Karl3; Sturchio, Neil C.4; Andraski, Brian J.5; Eckardt, Frank D.6; Jackson, W. Andrew1
通讯作者Jackson, W. Andrew
来源期刊ENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
EISSN1520-5851
出版年2010
卷号44期号:22页码:8429-8434
英文摘要

A new ion chromatography electrospray tandem mass spectrometry (IC-ESI/MS/MS) method has been developed for quantification and confirmation of chlorate (ClO3-) in environmental samples. The method involves the electrochemical generation of isotopically labeled chlorate internal standard ((ClO3-)-O-18) using O-18 water ((H2O)-O-18). The standard was added to all samples prior to analysis thereby minimizing the matrix effects that are associated with common ions without the need for expensive sample pretreatments. The method detection limit (MDL) for ClO3- was 2 ng L-1 for a 1 mL volume sample injection. The proposed method was successfully applied to analyze ClO3- in difficult environmental samples including soil and plant leachates. The IC-ESI/MS/MS method described here was also compared to established EPA method 317.0 for ClO3- analysis. Samples collected from a variety of environments previously shown to contain natural perchlorate (ClO4-) occurrence were analyzed using the proposed method and ClO3- was found to co-occur with ClO4- at concentrations ranging from <2 ng L-1 in precipitation from Texas and Puerto Rico to >500 mg kg(-1) in caliche salt deposits from the Atacama Desert in Chile. Relatively low concentrations of ClO3- in some natural groundwater samples (<0.1 mu g L-1) analyzed in this work may indicate lower stability when compared to ClO4- in the subsurface. The high concentrations of ClO3- in caliches and soils (3-6 orders of magnitude greater) as compared to precipitation samples indicate that ClO3-, like ClO4-, may be atmospherically produced and deposited, then concentrated in dry soils, and is possibly a minor component in the biogeochemical cycle of chlorine.


类型Article
语种英语
国家USA ; South Africa
收录类别SCI-E
WOS记录号WOS:000284248300013
WOS关键词PERCHLORATE FORMATION ; OZONE OXIDATION ; ION ; CHEMISTRY ; CHLORIDE
WOS类目Engineering, Environmental ; Environmental Sciences
WOS研究方向Engineering ; Environmental Sciences & Ecology
来源机构United States Geological Survey
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/164072
作者单位1.Texas Tech Univ, Dept Civil & Environm Engn, Lubbock, TX 79409 USA;
2.Shaw Environm Inc, Lawrenceville, NJ 08648 USA;
3.US Geol Survey, Reston, VA 20192 USA;
4.Univ Illinois, Chicago, IL 60607 USA;
5.US Geol Survey, Carson City, NV 89701 USA;
6.Univ Cape Town, ZA-7701 Rondebosch, South Africa
推荐引用方式
GB/T 7714
Rao, Balaji,Hatzinger, Paul B.,Bohlke, John Karl,et al. Natural Chlorate in the Environment: Application of a New IC-ESI/MS/MS Method with a (ClO3-)-O-18 Internal Standard[J]. United States Geological Survey,2010,44(22):8429-8434.
APA Rao, Balaji.,Hatzinger, Paul B..,Bohlke, John Karl.,Sturchio, Neil C..,Andraski, Brian J..,...&Jackson, W. Andrew.(2010).Natural Chlorate in the Environment: Application of a New IC-ESI/MS/MS Method with a (ClO3-)-O-18 Internal Standard.ENVIRONMENTAL SCIENCE & TECHNOLOGY,44(22),8429-8434.
MLA Rao, Balaji,et al."Natural Chlorate in the Environment: Application of a New IC-ESI/MS/MS Method with a (ClO3-)-O-18 Internal Standard".ENVIRONMENTAL SCIENCE & TECHNOLOGY 44.22(2010):8429-8434.
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