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ICP-MS测定含钨化妆品中的汞含量
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Abstract:
探究了电感耦合等离子体质谱仪(ICP-MS)测定化妆品中的汞含量时，钨对汞同位素的多原子离子型质谱干扰规律，通过改变微波消解酸体系，选择合适的同位素以及优化仪器参数，建立了可以有效减少干扰的ICP-MS法测定含钨化妆品的汞含量的方法。对该方法的检出限、精密度、回收率做了实验分析，结果表明：汞同位素201Hg和204Hg的检出限分别为0.002 mg/kg和0.001 mg/kg，低中高浓度汞的精密度在3.0%~4.1%之间，低中高浓度汞的加标回收率在90%~95%之间，满足化妆品中汞的测试要求。
The interference of tungsten on the polyatomic ion type mass spectrometry of mercury isotopes in cosmetics was investigated when the mercury content in cosmetics was determined by inductively coupled plasma mass spectrometry (ICP-MS). By changing the microwave digestion acid system, selecting appropriate isotopes and optimizing instrument parameters, an ICP-MS method that can effectively reduce interference was established to determine the mercury content in cosmetics containing tungsten. The detection limit, precision and recovery rate of the method were tested and analyzed. The results showed that the detection limits of 201Hg and 204Hg mercury isotopes were 0.002 mg/kg and 0.001 mg/kg, respectively. The precision of low, medium and high concentration mercury was 3.0%~4.1%, and the spiked recovery rate of low, medium and high concentration mercury was 90%~95%, which meet the test requirements of mercury in cosmetics.
| [1] | 祝红丽, 张丽鹏, 杜龙, 等. 钨的地球化学性质与华南地区钨矿成因[J]. 岩石学报, 2020, 36(1): 13-22. |
| [2] | 国家食品药品监督管理总局化妆品标准专家委员会. 《化妆品安全技术规范》(2015年版) [S]. 北京: 人民卫生出版社, 2015. |
| [3] | 王海鹰, 白建军, 师熙撼, 等. 动态反应池电感耦合等离子体质谱法消除钨的氧化物对汞的质谱干扰[J]. 理化检验-化学分册, 2015, 51(5): 659-663. |
| [4] | Guo, W., Hu, S.H., Wang, X.J., et al. (2011) Application of Ion Molecule Reaction to Eliminate WO Interference on Mercury Determination in Soil and Sediment Samples by ICP-MS. Journal of Analytical Atomic Spectrometry, 26, 1198-1203. https://doi.org/10.1039/c1ja00005e |
| [5] | Mann, J.L., Long, S.E. and Kelly, W.R. (2003) Direct Determination of Mercury at Picomole L？1 Levels in Bottled Water by Isotope Dilution Cold-Vapor Generation Inductively Coupled Plasma Mass Spectrometry. Journal of Analytical Atomic Spectrometry, 18, 1293-1296. https://doi.org/10.1039/B306640A |
| [6] | Allibone, J., Fatemian, E. and Walker, P.J. (1999) Determination of Mercury in Potable Water by ICFLMS Using Gold as a Stabilising Agent. Journal of Analytical Atomic Spectrometry, 14, 235-239. https://doi.org/10.1039/a806193i |
| [7] | Liu, H.-W., Jiang, S.-J. and Liu, S.-H. (1999) Determina-tion of Cadmium, Mercury and Lead in Seawater by Electrothermal Vaporization Isotope Dilution Inductively Coupled Plasma Mass Spectrometry. Spectrochimica Acta Part B, 54, 1367-1375. https://doi.org/10.1016/S0584-8547(99)00081-6 |
| [8] | 张璇, 王长华, 胡芳菲, 等. 沉淀分离-电感耦合等离子体质谱法测定高纯钨中铌铼含量[J]. 光谱学与光谱分析, 2022, 42(7): 2169-2174. |
| [9] | 范健, 黄进宇, 邹玫玫, 等. ICP-AES测定高纯钨中杂质元素[J]. 中南工业大学学报, 1999, 30(1): 71-73. |
| [10] | 高小飞, 倪文山, 姚明星, 等. 电感耦合等离子体原子发射光谱法测定黑钨精矿中痕量硫磷[J]. 冶金分析, 2012, 32(6): 30-33. |
| [11] | 付燕利, 邱坤艳, 陈纯, 等. 等离子体对ICP-MS调谐结果的影响[J]. 安徽农业科学, 2012, 40(21): 10767-10768, 10825. |
| [12] | 洪光辉, 王晴晴, 崔喜平, 等. ICP-MS分析中的干扰及其消除研究进展[J]. 实验科学与技术, 2021, 19(3): 14-21. |
