Determination of Mn and toxic elements in Chinese spirits by inductively coupled plasma mass spectrometry
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摘要: 建立电感耦合等离子体质谱（ICP-MS）法测定白酒中Mn和9个毒理性元素含量的分析方法。白酒采用硝酸酸化并加入低浓度盐酸后测定了其中的Be、Cr、Mn、Ni、As、Cd、Sn、Sb、Hg、Pb等元素,盐酸的加入有效地改善了样品溶液中元素的长时间稳定性,尤其是元素Hg和Sn。应用八极杆碰撞/反应池（ORS）技术有效地消除了盐酸的使用所带入的氯离子干扰以及其他质谱干扰,采用基体匹配并通过加入内标溶液有效地补偿样品传输的影响以及溶剂蒸发速率的差异,消除了基体所产生的影响。在选定的工作条件下,方法的线性关系良好,各元素的检出限为0.1312.15 ng/L之间,相对标准偏差（RSD）在0.75%3.48%之间,样品的加标回收率为93.80%110.00%。该方法具有操作简单、快速、结果准确等特点,可用于白酒的质量控制和安全评价。
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关键词:
- 白酒 /
- 电感耦合等离子体质谱 /
- Mn /
- 毒理性元素 /
- 盐酸
Abstract: A method for simultaneous determination of Mn and nine toxic elements in Chinese spirits by inductively coupled plasma mass spectrometry( ICP- MS) was established. After acidifying in nitric acid and low concentration of hydrochloric acid,the elements including Be,Cr,Mn,Ni,As,Cd,Sn,Sb,Hg and Pb in Chinese spirits were measured by ICP-MS directly. The addition of low concentration of hydrochloric acid could improve the stability of elements,especially Hg and Sn,effectively. Octopole reaction system(ORS) was used to eliminate the interference of chlorine ion and other mass spectral interference. The matrix maching and the internal standard elements mixed solution(Li,Y,In and Bi) had compensated the difference of sample transfer efficiency and evaporation rate of solvent. Under the optimum condition,the method had good linear relation.The detection limit of the 10 elements was in the range of 0.1312.15 ng/L,the RSD was 0.75%3.48%,and the recovery of standard addition was 93.80% 110.00%. The method was simple and rapid with high precision and accuracy,and could be used in Chinese spirits quality control and safety estimations. -
[1] 聂西度,符靓.ICP-MS法测定食品级二甲基硅油中的As、Cd、Hg、Pb毒理性元素[J].现代食品科技,2014,30(6):229-232. [2] Lara R,Cerutti S,Salonia J A,et al.Trace element determination of Argentine wines using ETAAS and USN-ICP-OES[J].Food and Chemical Toxicology,2005,43(2):293-297.
[3] Seeger T S,Rosa F C,Bizzi CA,et al.Feasibility of dispersive liquid-liquid microextraction for extraction and preconcentration of Cu and Fe in red and white wine and determination by flame atomic absorption spectrometry[J].Spectrochimica Acta Part B:Atomic Spectroscopy,2015,105:136-140.
[4] Boschetti W,Borges A R,Duarte A T,et al.Simultaneous determination of Mo and Ni in wine and soil amendments by HR-CS GF AAS[J].Analytical Methods,2014,6(12):4247-4256.
[5] Selih V S,Sala M,Drgan V.Multi-element analysis of wines by ICP-MS and ICP-OES and their classification according to geographical origin in Slovenia[J].Food Chemistry,2014,153:414-423.
[6] Pan X D,Tang J,Chen Q,et al.Evaluation of direct sampling method for trace elements analysis in Chinese rice wine by ICPOES[J].European Food Research and Technology,2013,236(3):531-535.
[7] 万益群,潘凤琴,柳英霞,等.电感耦合等离子体原子发射光谱法测定白酒中23种微量元素[J].光谱学与光谱分析,2009,29(2):499-503. [8] Coetzee P P,Steffens F E,Eiselen R J,et al.Multi-element analysis of south african wines by ICP-MS and their classification according to geographical origin[J].Journal of Agricultural and Food Chemistry,2005,53(13):5060-5066.
[9] Geana I,Iordache A,Ionete R,et al.Geographical origin identification of Romanian wines by ICP-MS elemental analysis[J].Food Chemistry,2013,138(2-3):1125-1134.
[10] Coetzee P P,van Jaarsveld F P,Vanhaecke F,et al.Intraregional classification of wine via ICP-MS elemental fingerprinting[J].Food Chemistry,2014,164:485-492.
[11] 张建,田志强,卢垣宇,等.电感耦合等离子体质谱法检测白酒中28种元素[J].食品科学,2013,34(22):257-260. [12] 张艳红,李素琴,史斌斌,等.ICP-MS测定白酒中微量元素方法研究[J].酿酒,2014,41(4):87-90. [13] Xie H L,Li Y J,Nie X D.Matrix effects and behaviors of elements in oxalic acid medium by inductively coupled plasma mass spectrometry[J].Chinese Chemistry Letter,2006,17(7):945-948.
[14] GB 2757-2012,食品安全国家标准蒸馏酒及其配制酒[S]. [15] GB23545-2009,白酒中锰的测定电感耦合等离子体原子发射光谱法[S]. [16] GB 2762-2012,食品安全国家标准食品中污染物限量[S].
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