电感耦合等离子体质谱法测定饮用纯净水中24种金属元素
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摘要
目的建立电感耦合等离子体质谱法(inductively coupled plasma mass spectrometry,ICP-MS)同时快速测定饮用纯净水中Tl、Ba、Sb、Sn、Cd、Se、Cu、Ni、Co、Mn、V、Ti、Cr、Mo、B、Al、Zn、Fe、Mg、Ca、As、Sr、Hg、Pb等24种金属元素含量的分析方法。方法饮用纯净水样品经硝酸酸化后直接进样,使用ICP-MS测定,并对方法的线性范围、检出限、精密度和回收率等进行考察。结果 24种元素的相关系数均大于0.999,线性良好,方法检出限为0.003~0.8μg/L,定量限为0.01~3μg/L。各元素加标回收率在87.0%~117.0%之间,测定结果相对标准偏差(relative standard deviation,RSD)在0.090%~5.527%之间。结论该检测方法简单、快速、准确、灵敏度高,适用于饮用纯净水中多种金属元素的测定。
Objective To establish a method for simultaneous determination of 24 kinds of metal elements including Tl, Ba, Sb, Sn, Cd, Se, Cu, Ni, Co, Mn, V, Ti, Cr, Mo, B, Al, Zn, Fe, Mg, Ca, As, Sr, Hg, Pb, etc. in purified water by inductively coupled plasma mass spectrometry(ICP-MS). Methods Water samples were detected by ICP-MS after acidification(HNO_3). At the same time, the linear relation, accuracy, precision and limit of quantitation of this method were investigated. Results It showed good linearity and the correlation coefficients of 24 kinds of elements were all greater than 0.999. The detection limits were obtained between 0.003~0.8 μg/L, and the limits of quantification were between 0.01~3 μg/L. The recovery rates were between 87.0%~117.0%, with the relative standard deviations(RSDs) between 0.090%~5.527%. Conclusion The established method is simple, rapid, accurate and sensitive, which is suitable for the determination of metal elements in purified water.
Objective To establish a method for simultaneous determination of 24 kinds of metal elements including Tl, Ba, Sb, Sn, Cd, Se, Cu, Ni, Co, Mn, V, Ti, Cr, Mo, B, Al, Zn, Fe, Mg, Ca, As, Sr, Hg, Pb, etc. in purified water by inductively coupled plasma mass spectrometry(ICP-MS). Methods Water samples were detected by ICP-MS after acidification(HNO_3). At the same time, the linear relation, accuracy, precision and limit of quantitation of this method were investigated. Results It showed good linearity and the correlation coefficients of 24 kinds of elements were all greater than 0.999. The detection limits were obtained between 0.003~0.8 μg/L, and the limits of quantification were between 0.01~3 μg/L. The recovery rates were between 87.0%~117.0%, with the relative standard deviations(RSDs) between 0.090%~5.527%. Conclusion The established method is simple, rapid, accurate and sensitive, which is suitable for the determination of metal elements in purified water.
引文
[1]龚纯,刘小辉.石墨炉-原子吸收法测定饮用纯净水中铅含量的不确定度[J].食品安全质量检测学报,2016,7(7):2781-2784.Gong C,Liu XH.Uncertainty of determination of plumbum in purified water by graphite furnace atomic absorption spectrophotometry[J].J Food Saf Qual,2016,7(7):2781-2784.
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[7]关尔渤,肖驰.双道原子荧光光度计检测食品中汞元素的方法研究[J].食品安全质量检测学报,2013,4(4):1152-1154.Guan EB,Xiao C.Study on analytical method by dual-channel atomic fluorescence spectrometer for mercury detection in food[J].J Food Saf Qual,2013,4(4):1152-1154.
[8]杨飞,石磊,曹登云.氢化物发生-原子荧光光谱法测定杏仁中的微量元素硒[J].光谱实验室,2012,29(5):3034-3037.Yang F,Shi L,Cao DY.Determination of trace selenium in almond by HG-AFS[J].J Spectr Lab,2012,29(5):3034-3037.
[9]常勇,吴大鹏.比值光谱导数分光光度法同时测定锌、钴、锰[J].辽阳石油化工高等专科学校学报,2002,18(4):1-4.Chang Y,Wu DP.Simultaneous determination of zinc,cobalt,manganese by ratio spectra derivative spectrophotometry[J].J Liaoyang Petrochem Coll,2002,18(4):1-4.
[10]金洪洙,张晓霞,刘东方,等.浊点萃取-分光光度法测定水中痕量六价铬[J].环境检测与技术,2009,21(4):51-53.Jin HZ,Zhang XX,Liu DF,et al.Determination of trace Cr(VI)in water by spectrohphotometry with cloud point extraction[J].Environ Detect Technol,2009,21(4):51-53.
[11]Cindric IJ,Zeiner M,Steffan I,et al.Trace elemental characterization of edible oils by ICP-AES and GFAAS[J].Microchem J,2007,85(1):136-139.
[12]Zeiner M,Steffan I,Cindric IJ,et al.Determination of trace elements in olive oil by ICP-AES and ETA-AAS:A pilot study on the geographical characterization[J].Microchem J,2005,81(2):171-176.
[13]Selih V,Sala M,Drgan V.Multi-element analysis of wines by ICP-MS and ICP-OES and their classification according to geographical origin in Slovennia[J].Food Chem,2014,153:414-423.
[14]Vassileva E,Wysocka I,Betti M.Reference measurements for cadmium,copper,mercury,lead,zinc and methyl mercury mass fractions in scallop sample by isotope dilution inductively coupled plasma mass spectrometry[J].Microchem J,2014,116:197-205.
[15]Gonzalez C,Cabezas A,Diaz M.Preconcentration and determination of rare-earth elements in iron-rich water samples by extraction chromatography and plasma source mass spectrometry(ICP-MS)[J].Talanta,2005,68:47-53.
[16]关红,刘盛田,田丽荣,等.电感耦合等离子体质谱法测定生活饮用水中的21种元素[J].中国卫生检验杂志,2016,26(6):792-794.Guan H,Liu ST,Tian LR,et al.Determination of 21 elements in drinking water by ICP-MS[J].Chin J Health Lab Technol,2016,26(6):792-794.
[17]侯建荣,卓召模,彭荣飞,等.电感耦合等离子体质谱法测定饮用水中10种微量元素[J].中国卫生检验杂志,2008,18(7):1288-1289.Hou JR,Zhuo ZM,Peng RF,et al.Determination of 10 trace elements for water quality investigation by inductively coupled plasma mass spectrometry[J].Chin J Health Lab Technol,2008,18(7):1288-1289.
[18]GB 5009.268-2016食品安全国家标准食品中多元素的测定[S].GB 5009.268-2016 National food safety standard-Determination of multi-elements in food[S].
[19]GB 2762-2017食品安全国家标准食品中污染物限量[S].GB 2762-2017 National food safety standard-Limits of contaminants in foods[S].
[2]刘昌明,曹英杰.我国水污染状况及其对人类健康的影响与主要对策[J].科学与社会,2009,(2):16-22.Liu CM,Cao YJ.Main solutions on the contamination of our country and its effect on people[J].Sci Soc,2009,(2):16-22.
[3]Ghaedi M,Shokrollahi A,Niknam K,et al.Cloud point extraction and flame atomic absorption spectrometric determination of cadmium(II),lead(II),palladium(II)and silver(I)in environmental samples[J].J Hazard Mater,2009,168(2-3):1022-1027.
[4]王尚芝,孟双明,关翠林,等.浊点萃取-火焰原子吸收光谱法测定面粉中痕量铬[J].山西大同大学学报(自然科学版),2012,28(3):32-34.Wang SZ,Meng SM,Guan CL,et al.Determination of trace amouts of chromium in flour samples by flame atomic absorption spectrometry after cloud point extraction[J].J Shanxi Datong Univ(Nat Sci Ed),2012,28(3):32-34.
[5]Rezende HC,Nascentes CC,Coelho NMM.Cloud point extraction for determination of cadmium in soft drinks by thermospray flame furnace atomic absorption spectrometry[J].Microchem J,2011,97(2):118-121.
[6]张思冲,周晓聪,叶华香,等.X射线荧光光谱法测定哈尔滨城郊菜地土壤重金属[J].中国农学通报,2009,25(13):230-233.Zhang SC,Zhou XC,Ye HX,et al.The determination of heavy metals in vegetable soil by X-ray fluorescence spectrometry in suburb of Harbin[J].Chin Agric Sci Bull,2009,25(13):230-233.
[7]关尔渤,肖驰.双道原子荧光光度计检测食品中汞元素的方法研究[J].食品安全质量检测学报,2013,4(4):1152-1154.Guan EB,Xiao C.Study on analytical method by dual-channel atomic fluorescence spectrometer for mercury detection in food[J].J Food Saf Qual,2013,4(4):1152-1154.
[8]杨飞,石磊,曹登云.氢化物发生-原子荧光光谱法测定杏仁中的微量元素硒[J].光谱实验室,2012,29(5):3034-3037.Yang F,Shi L,Cao DY.Determination of trace selenium in almond by HG-AFS[J].J Spectr Lab,2012,29(5):3034-3037.
[9]常勇,吴大鹏.比值光谱导数分光光度法同时测定锌、钴、锰[J].辽阳石油化工高等专科学校学报,2002,18(4):1-4.Chang Y,Wu DP.Simultaneous determination of zinc,cobalt,manganese by ratio spectra derivative spectrophotometry[J].J Liaoyang Petrochem Coll,2002,18(4):1-4.
[10]金洪洙,张晓霞,刘东方,等.浊点萃取-分光光度法测定水中痕量六价铬[J].环境检测与技术,2009,21(4):51-53.Jin HZ,Zhang XX,Liu DF,et al.Determination of trace Cr(VI)in water by spectrohphotometry with cloud point extraction[J].Environ Detect Technol,2009,21(4):51-53.
[11]Cindric IJ,Zeiner M,Steffan I,et al.Trace elemental characterization of edible oils by ICP-AES and GFAAS[J].Microchem J,2007,85(1):136-139.
[12]Zeiner M,Steffan I,Cindric IJ,et al.Determination of trace elements in olive oil by ICP-AES and ETA-AAS:A pilot study on the geographical characterization[J].Microchem J,2005,81(2):171-176.
[13]Selih V,Sala M,Drgan V.Multi-element analysis of wines by ICP-MS and ICP-OES and their classification according to geographical origin in Slovennia[J].Food Chem,2014,153:414-423.
[14]Vassileva E,Wysocka I,Betti M.Reference measurements for cadmium,copper,mercury,lead,zinc and methyl mercury mass fractions in scallop sample by isotope dilution inductively coupled plasma mass spectrometry[J].Microchem J,2014,116:197-205.
[15]Gonzalez C,Cabezas A,Diaz M.Preconcentration and determination of rare-earth elements in iron-rich water samples by extraction chromatography and plasma source mass spectrometry(ICP-MS)[J].Talanta,2005,68:47-53.
[16]关红,刘盛田,田丽荣,等.电感耦合等离子体质谱法测定生活饮用水中的21种元素[J].中国卫生检验杂志,2016,26(6):792-794.Guan H,Liu ST,Tian LR,et al.Determination of 21 elements in drinking water by ICP-MS[J].Chin J Health Lab Technol,2016,26(6):792-794.
[17]侯建荣,卓召模,彭荣飞,等.电感耦合等离子体质谱法测定饮用水中10种微量元素[J].中国卫生检验杂志,2008,18(7):1288-1289.Hou JR,Zhuo ZM,Peng RF,et al.Determination of 10 trace elements for water quality investigation by inductively coupled plasma mass spectrometry[J].Chin J Health Lab Technol,2008,18(7):1288-1289.
[18]GB 5009.268-2016食品安全国家标准食品中多元素的测定[S].GB 5009.268-2016 National food safety standard-Determination of multi-elements in food[S].
[19]GB 2762-2017食品安全国家标准食品中污染物限量[S].GB 2762-2017 National food safety standard-Limits of contaminants in foods[S].