土壤及蔬菜中微量汞的同位素稀释电感耦合等离子体质谱测定

CORC > 集美大学

	土壤及蔬菜中微量汞的同位素稀释电感耦合等离子体质谱测定
	秦德萍 ; 黄志勇 ; 邓志兰 ; 陈婷
刊名	http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=test201002009&dbcode=CJFQ&dbname=CJFQ2010
	2012-06-05 ; 2012-06-05
关键词	同位素稀释电感耦合等离子体质谱汞土壤蔬菜 isotope dilution inductively coupled plasma mass spectrometry(ICP-MS) mercury soil vegetable O657.63
其他题名	Determination of Trace Mercury in Vegetable-growing Soil and Vegetable by Isotope Dilution Inductively Coupled Plasma Mass Spectrometry
中文摘要	建立了微波消解电感耦合等离子体质谱同位素稀释(ID/ICP-MS)测定微量汞的方法。考察了仪器参数及测量条件对汞同位素比值RHg(202Hg/200Hg)测量的影响,根据同位素比值测量误差的传递因子优化了富集同位素稀释剂(202Hg>98%)的加入量,并以铊同位素比值(205Tl/203Tl)作为RHg(202Hg/200Hg)测量时发生质量歧视效应的校正因子;通过反同位素稀释法标定了富集汞同位素稀释剂的浓度。利用所建立的ID/ICP-MS方法测定了杨树叶(GBW07604)和湖积物(GBW07423)2种标准参考物中汞的含量,回收率分别为112%和100%。该方法具有准确度高、精密度好等优点,且样品前处理简便,适用于土壤及蔬菜等样品中微量及痕量汞的准确测定。; A method using isotope dilution inductively coupled plasma mass spectrometry(ID/ICP-MS) for the determination of trace Hg in vegetable-growing soil and vegetable samples was established.The concentrations of Hg in soil and vegetable were calculated with ID formula based on the accurate measurement of isotope ratio RHg(202Hg/200Hg) with ICP-MS.Instrumental parameters,amounts of spike isotopic reagent(202Hg >98%),mass bias,dead time,and isobaric and polyatomic interferences were discussed and optimized.An internal standard containing 50 μg/L of Tl was simultaneously measured for the correction of mass bias and the signal fluctuation by the isotope ratio of 205Tl/203Tl.Concentration of the spike isotopic reagent(202Hg) was accurately measured with the method of reverse phase isotope dilution.After being digested with HNO3 and HClO4 by microwave,the concentrations of Hg in poplar leaves(GBW07604) and soil(GBW07423) were measured with the established method.The recoveries of 112% for poplar leaves and 100% for soil were obtained.The established method showed the advantages of simple sample preparation,good accuracy and precision,and was suitable for the determination of trace Hg in soil and vegetable.; 【作者单位】集美大学生物工程学院；【作者英文名】QIN De-ping,HUANG Zhi-yong,DENG Zhi-lan,CHEN Ting(College of Bioengineering,Jimei University,Xiamen 361021,China)
语种	中文
内容类型	期刊论文
源URL	[http://ir.calis.edu.cn/hdl/235041/18781]
专题	集美大学
推荐引用方式 GB/T 7714	秦德萍,黄志勇,邓志兰,等. 土壤及蔬菜中微量汞的同位素稀释电感耦合等离子体质谱测定[J]. http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=test201002009&dbcode=CJFQ&dbname=CJFQ2010,2012, 2012.
APA	秦德萍,黄志勇,邓志兰,&陈婷.(2012).土壤及蔬菜中微量汞的同位素稀释电感耦合等离子体质谱测定.http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=test201002009&dbcode=CJFQ&dbname=CJFQ2010.
MLA	秦德萍,et al."土壤及蔬菜中微量汞的同位素稀释电感耦合等离子体质谱测定".http://epub.edu.cnki.net/grid2008/brief/detailj.aspx?filename=test201002009&dbcode=CJFQ&dbname=CJFQ2010 (2012).