Determination of Trace Amount of Thallium in Potable Water by GFAAS with Ion-Exchange Separation
摘 要
水样经硝酸酸化、蒸发浓缩后,调pH至1.7~2.0;用溴水氧化铊(Ⅰ)为铊(Ⅲ);用D401离子交换树脂分离出铊,而后用石墨炉原子吸收光谱法测定。在pH 1.8附近,铊(Ⅲ)可与砷(Ⅴ)、硼(Ⅲ)、钡(Ⅱ)、铍(Ⅱ)、钙(Ⅱ)、镓(Ⅲ)、钾(Ⅰ)、锂(Ⅰ)、镁(Ⅱ)、锰(Ⅱ)、钠(Ⅰ)、锑(Ⅴ)、硅(Ⅳ)、锶(Ⅱ)、铋(Ⅲ)、铜(Ⅱ)、钛(Ⅳ)和钒(Ⅴ)分离;而铝(Ⅲ)、镉(Ⅱ)、铬(Ⅲ)、铁(Ⅲ)、镍(Ⅱ)、铅(Ⅱ)和锌(Ⅱ)不能与铊完全分离,但一般水样经分离程序后残留下来的这些物质不足以影响对铊的测定。方法的线性范围为25~500 pg;测定下限为0.5 ng·L-1。方法用于实际样品分析,测定结果与已知值相符,加标回收率在94.0%~110%之间,测定值的相对标准偏差(n=8)在1.9%~15%之间。
Abstract
The potable water sample was digested with nitric acid, the sample solution was evaporated to a small volume and its acidity was adjusted to 1.7-2.0. Trace amount of Tl(Ⅰ) in the sample solution was oxidized to Tl(Ⅲ) by bromine water, separated on D401 ion-exchange resin column and determined by GFAAS. Under the optimum acidity around pH 1.8, Tl(Ⅲ) was separated from arsenic(Ⅴ), boron(Ⅲ), barium(Ⅱ), beryllium(Ⅱ), calcium(Ⅱ), gallium(Ⅲ), potassium(Ⅰ), lithium(Ⅰ), magnesium(Ⅱ), manganese(Ⅱ), sodium(Ⅰ), antimony(Ⅴ), silicon(Ⅳ), strontium(Ⅱ), bismuth(Ⅲ), copper(Ⅱ), titanium(Ⅳ), vanadium(Ⅴ) but was not separated completely from aluminium(Ⅲ), cadmium(Ⅱ), chromium(Ⅲ), iron(Ⅲ), nickel(Ⅱ), lead(Ⅱ) and zinc(Ⅱ). However, for most of the water samples, the amount of the above mentioned cations remained after the ion-exchange separation weren′t sufficient to interfere with the determination of thallium. The linearity range for Tl(Ⅲ) was between 25-500 pg, and the limit of quantification was 0.5 ng·L-1. The method was applied to the analysis of some substantial samples, giving results consistent with the known values. Recovery found by standard addition method were in the range of 94.0%-110% and RSD′s (n=8) found were in the range of 1.9%-15%.
中图分类号 O657.31 DOI 10.11973/lhjy-hx201512010
所属栏目 工作简报
基金项目
收稿日期 2014/11/25
修改稿日期
网络出版日期
作者单位点击查看
联系人作者吴文启(ciqw@163.com)
备注李奋(1980-),女,广西平南人,工程师,主要从事 物质的化学成分检测。
引用该论文: LI Fen,WU Wen-qi,XIE Xiao-yan,LUO Yu-zhen,LIANG Xiao-ming,LU Jin-rong. Determination of Trace Amount of Thallium in Potable Water by GFAAS with Ion-Exchange Separation[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2015, 51(12): 1675~1679
李奋,吴文启,谢晓雁,罗玉珍,梁晓明,卢金荣. 离子交换分离-石墨炉原子吸收光谱法测定饮用水中痕量铊[J]. 理化检验-化学分册, 2015, 51(12): 1675~1679
共有人对该论文发表了看法,其中:
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】GB 5749-2006 生活饮用水卫生标准[S].
【2】孙登明,朱庆仁,魏崇花.以偶合反应萃取催化光度法测定铊[J].分析化学, 2001,29(11):1360-1361.
【3】陈中道,王洪恩,朱军,等.电位溶出法测定环境水中的痕量铊[J].济宁医学院学报, 1998,21(2):18-20.
【4】陈文仙.微分电位溶出法测定水中铊[J].福建纺织, 2005,191(4):18-20.
【5】吴亚英,陶大钧.阳极溶出伏安法测定地表水中铊[J].环境检测管理与技术, 1998,10(4):30-32.
【6】曹蕾,徐霞君.ICP-MS法测定生活饮用水和地表水中的铊元素[J].福建分析测试, 2012,21(3):27-29.
【7】甘杰,许晶,罗岳平,等.ICP-MS法同时测定地表水中18种金属元素[J].环境检测管理与技术, 2010,22(5):36-38.
【8】DAS A K, DUTTA M, LUISA C M, et al. Determination of thallium in water sample[J]. Microchemical Journal, 2007,86:2-8.
【9】陈海婷,陈建国,林力,等.浊点萃取电热原子吸收光谱法测定水中痕量铊[J].分析试验室, 2009,28(11):60-62.
【10】罗津新.TBP萃淋树脂分离GFAAS测定水与废水中的铊[J].现代科学仪器, 2000(4):39-41.
【11】孟亚军,张克荣,郑波,等.聚氨酯泡沫吸附-平台石墨炉原子吸收法测定痕量铊[J].四川大学学报:医学版, 2006,37(2):305-308.
【12】朱晨燕.纳米TiO2固相萃取石墨炉原子吸收法测定饮用水中的微量铊[J].净水技术, 2012,31(3):68-70.
【13】MOHAMMADI S Z. Flame atomic absorption spectrometric determination of trace amounts of zinc and thallium in different matrixes after solid phase extraction on modified multiwalled carbon nanotubes[J]. American Journal of Analytical Chemistry, 2012,3:371-377.
【14】黎煦江.石墨炉原子吸收光谱法测定水中痕量铊[J].供水技术, 2011,5(3):55-56.
【15】GB 5750.6-2006 生活饮用水标准检验方法 金属指标[S].
【16】LIN Tser-sheng, NRIAGU J O. Thallium speciation in river waters with Chelex-100 resin[J]. Analytica chimica Acta, 1999,395:301-307.
【17】STRELOW F W E. An ion exchange selectivity scale of cations based on equilibrium distribution coefficients[J]. Anal Chem, 1960,32(9):1185-1188.
【18】周锦帆,王慧,吴骋,等.离子交换分离的试验技巧及研究方法[J].理化检验-化学分册, 2010,46(8):960-962.
【19】吴文启,李奋,廖红梅,等.离子交换分离石墨炉原子吸收光谱法测定高纯铟中痕量铊[J].理化检验-化学分册, 2008,44(10):950-953.
【2】孙登明,朱庆仁,魏崇花.以偶合反应萃取催化光度法测定铊[J].分析化学, 2001,29(11):1360-1361.
【3】陈中道,王洪恩,朱军,等.电位溶出法测定环境水中的痕量铊[J].济宁医学院学报, 1998,21(2):18-20.
【4】陈文仙.微分电位溶出法测定水中铊[J].福建纺织, 2005,191(4):18-20.
【5】吴亚英,陶大钧.阳极溶出伏安法测定地表水中铊[J].环境检测管理与技术, 1998,10(4):30-32.
【6】曹蕾,徐霞君.ICP-MS法测定生活饮用水和地表水中的铊元素[J].福建分析测试, 2012,21(3):27-29.
【7】甘杰,许晶,罗岳平,等.ICP-MS法同时测定地表水中18种金属元素[J].环境检测管理与技术, 2010,22(5):36-38.
【8】DAS A K, DUTTA M, LUISA C M, et al. Determination of thallium in water sample[J]. Microchemical Journal, 2007,86:2-8.
【9】陈海婷,陈建国,林力,等.浊点萃取电热原子吸收光谱法测定水中痕量铊[J].分析试验室, 2009,28(11):60-62.
【10】罗津新.TBP萃淋树脂分离GFAAS测定水与废水中的铊[J].现代科学仪器, 2000(4):39-41.
【11】孟亚军,张克荣,郑波,等.聚氨酯泡沫吸附-平台石墨炉原子吸收法测定痕量铊[J].四川大学学报:医学版, 2006,37(2):305-308.
【12】朱晨燕.纳米TiO2固相萃取石墨炉原子吸收法测定饮用水中的微量铊[J].净水技术, 2012,31(3):68-70.
【13】MOHAMMADI S Z. Flame atomic absorption spectrometric determination of trace amounts of zinc and thallium in different matrixes after solid phase extraction on modified multiwalled carbon nanotubes[J]. American Journal of Analytical Chemistry, 2012,3:371-377.
【14】黎煦江.石墨炉原子吸收光谱法测定水中痕量铊[J].供水技术, 2011,5(3):55-56.
【15】GB 5750.6-2006 生活饮用水标准检验方法 金属指标[S].
【16】LIN Tser-sheng, NRIAGU J O. Thallium speciation in river waters with Chelex-100 resin[J]. Analytica chimica Acta, 1999,395:301-307.
【17】STRELOW F W E. An ion exchange selectivity scale of cations based on equilibrium distribution coefficients[J]. Anal Chem, 1960,32(9):1185-1188.
【18】周锦帆,王慧,吴骋,等.离子交换分离的试验技巧及研究方法[J].理化检验-化学分册, 2010,46(8):960-962.
【19】吴文启,李奋,廖红梅,等.离子交换分离石墨炉原子吸收光谱法测定高纯铟中痕量铊[J].理化检验-化学分册, 2008,44(10):950-953.
相关信息