Determination of 17 Elements in Whole Blood by Inductively Coupled Plasma Mass Spectrometry with One-Step Acid Dilution
摘 要
鉴于经典方法(原子吸收光谱法)存在过程繁琐、引入污染风险高、样品量大、耗时较长等缺点,进行了题示研究。采用含0.1%(体积分数)硝酸、0.1%(体积分数)曲拉通、1%(体积分数)异丙醇的稀释液一步稀释全血样品(样品量最低为50 μL),所得溶液直接进电感耦合等离子体质谱仪分析。以Sc、Rh、In、Tb、Bi作为内标元素,碰撞模式选择氦(He)模式。结果显示:一步酸稀释法过程简单,引入污染风险小,且低、高浓度水平样品不会相互干扰,样品中17种元素可在45 s内完成同时检测;各目标元素的质量浓度分别在0.05~30 mg·L-1(Ca、Mg、Fe)和0.5~300 μg·L-1(Cr、Co、Cd、Cu、Mn、Mo、Ni、Pb、Se、V、Zn、Rb、Sr、Cs)内与对应的质谱响应值比值呈线性关系,检出限(3s)为0.3 ng·L-1~0.22 μg·L-1;对全血痕量元素标准物质L-1、L-2进行准确度试验,测定值均在认定值的95%置信区间内;对质控样品进行日内(n=10)、日间(n=15)精密度试验和方法比对试验,测定值的相对标准偏差均小于15%,且上述方法和经典方法测定值的相对误差的绝对值均不大于11%。
Abstract
In view of the disadvantages of the classical method (atomic absorption spectrometry), such as cumbersome process, high pollution risk, high sample amount, and time-consuming, the title study was carried out. Dilution solution containing 0.1% (volume fraction) nitric acid, 0.1% (volume fraction) triton and 1% (volume fraction) isopropanol was used for diluting the whole blood sample in one step with minimum sample amount of 50 μL, and the solution obtained was directly analyzed by inductively coupled plasma mass spectrometer, with Sc, Rh, In, Tb and Bi as internal standard elements, and the He mode as the collision mode. It was shown that the one-step acid dilution method had a simple process, low pollution risk, and samples with low and high concentration levels did not interfere with each other. The 17 elements in the samples could be detected simultaneously within 45 s. Linear relationships between values of the mass concentration of each target element and mass spectrometry response value ratio were kept in the ranges of 0.05-30 mg·L-1 (Ca, Mg and Fe) and 0.5-300 μg·L-1 (Cr, Co, Cd, Cu, Mn, Mo, Ni, Pb, Se, V, Zn, Rb, Sr and Cs), with detection limits (3s) in the range of 0.3 ng·L-1-0.22 μg·L-1. Test for accuracy was conducted on the whole blood trace element reference materials of L-1 and L-2, and the determined values were within 95% confidence intervals of the identified values. Tests for intra-day precision (n=10), inter-day precision (n=15) and method comparison were conducted on quality control samples, and RSDs of the determined values were less than 15%, with the absolute values of the relative errors of the determined values using the above method and classical method not more than 11%.
中图分类号 O657.31 DOI 10.11973/lhjy-hx202308009
所属栏目 工作简报
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收稿日期 2022/9/28
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备注霍玉美,工程师,硕士,主要从事光谱分析及质谱分析方面的工作,758176450@qq.com
引用该论文: HUO Yumei,XU Yuxuan,SHAN Hongbo,CAI Xin. Determination of 17 Elements in Whole Blood by Inductively Coupled Plasma Mass Spectrometry with One-Step Acid Dilution[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2023, 59(8): 923~929
霍玉美,许育绚,单洪波,蔡鑫. 一步酸稀释-电感耦合等离子体质谱法测定全血中17种元素的含量[J]. 理化检验-化学分册, 2023, 59(8): 923~929
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【5】TANVIR E M, KOMAROVA T, COMINO E, et al. Effects of storage conditions on the stability and distribution of clinical trace elements in whole blood and plasma:Application of ICP-MS[J]. Journal of Trace Elements in Medicine and Biology, 2021,68:126804.
【6】张秀武,李永华,杨林生,等.温控湿法消解ICP-MS测定全血中铅镉硒砷汞5种微量元素[J].光谱学与光谱分析, 2010,30(7):1972-1974.
【7】NIXON D E, MOYER T P. Routine clinical determination of lead, arsenic, cadmium, and thallium in urine and whole blood by inductively coupled plasma mass spectrometry[J]. Spectrochimica Acta Part B:Atomic Spectroscopy, 1996,51(1):13-25.
【8】李悦,豆小文,纪翔,等.ICP-MS法测定人全血中19种微量元素的性能评价及临床应用[J].国际检验医学杂志, 2020,41(20):2438-2444.
【9】杨艳伟,丁亮,戚其平,等.全血中23种微量元素的微波消解电感耦合等离子体质谱测定法[J].环境与健康杂志, 2003,20(4):240-241.
【10】贾永娟,雒琴,刘春冉,等.电感耦合等离子体质谱法与原子吸收光谱法在测定微量元素中的比较分析[J].标记免疫分析与临床, 2021,28(3):532-536.
【11】易海艳,杨露,张晗林.电感耦合等离子体-质谱法测定人全血中41种矿物质元素[J].中国职业医学, 2020,47(1):91-95.
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