文章摘要
仿生提取-高效液相色谱-电感耦合等离子体质谱技术测定冰硼散及朱砂药材中可溶性汞的含量
Determination of soluble mercury in Ice boron powder and cinnabarby bionic extraction- high performance liquid chromatography- inductively coupled plasma mass spectrometry
投稿时间：2019-09-20  修订日期：2020-05-29
DOI：
中文关键词: 仿生提取  高效液相色谱  电感耦合等离子体质谱  冰硼散  朱砂  可溶性汞  含量测定
英文关键词: bionic extraction  high performance liquid chromatography  inductively coupled plasma mass spectrometry  ice boron powder  cinnabar  soluble mercury  content determination
基金项目:
作者单位邮编
郭强* 河南省食品药品检验所 450018
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中文摘要:
      目的：建立仿生提取-高效液相色谱-电感耦合等离子体质谱技术测定冰硼散及朱砂药材中可溶性汞含量的分析方法，可用于研究冰硼散及朱砂药材的用药安全性 。方法：通过模拟人体胃肠道环境，采用人工胃液提取冰硼散及朱砂中的可溶性汞，结合高效液相色谱（以十八烷基硅烷键合硅胶为填充剂；8%甲醇-0.06 mol.L-1乙酸铵-0.05% 2-巯基乙醇的水溶液为流动相；流速0.4 mL.min-1；进样体积20 μL）-电感耦合等离子体质谱技术进行分析测定。结果：通过检测15批冰硼散样品及9批朱砂药材，结果甲基汞、乙基汞、无机汞分别在0.0007～0.28ng.mL-1、0.007～1.4ng.mL-1、0.17～34ng.mL-1范围内，浓度与峰面积呈良好的线性关系，r值分别为0.9997、0.9995、0.9998，平均回收率分别为96.8%、99.7%、98.0%，RSD分别为2.3%、2.8%、5.5%（n=6）。冰硼散中甲基汞含量为0.00046～0.018mg.kg-1，无机汞含量为0.64～4.73 mg.kg-1，乙基汞含量为0.075～0.096mg.kg-1；朱砂中甲基汞含量为0～0.034mg.kg-1，无机汞含量为8.54～101.07mg.kg-1，乙基汞含量为0～0.82mg.kg-1。结论：该方法简便、快速、灵敏，重现性好，可用于冰硼散及朱砂药材中可溶性汞的测定。
英文摘要:
      Objective: A method for the determination of soluble mercury in Ice boron powder and cinnabar by bionic extraction-high performance liquid chromatography-inductively coupled plasma mass spectrometry was established, It can be used to study the safety of bingboron powder and cinnabar.Method: By simulating the environment of human gastrointestinal tract, the soluble mercury in Ice boron powder and cinnabar was extracted by artificial gastric juice. High performance liquid chromatography (Octadecyl silane bonded silica gel was used as filler. The mobile phase is the aqueous solution of 8% methanol-0.06 mol?L-1 ammonium acetate -0.05% 2-mercaptoethanol. Flow rate: 0.4 mL?min-1; 20 micron injection volume)-inductively coupled plasma mass spectrometry for analysis and determination. Result: Through the detection of 15 batches of ice boron powder samples and 9 batches of cinnabar medicinal materials, the results show a good linear relationship between the concentration and peak area of methyl mercury, ethyl mercury and inorganic mercury in the range of 0.0007～0.28ng.mL-1、0.007～1.4ng.mL-1、0.17～34ng.mL-1, respectively, r value is 0.9997, 0.9995, 0.9998. The average recoveries were 96.8%, 99.7% and 98.0%, respectively, and the RSD were 2.3%, 2.8% and 5.5% (n=6).The content of methyl mercury in bingboran powder was 0.00046-0.018mg.kg-1, that of inorganic mercury was 0.64-4.73mg.kg-1, and that of ethyl mercury was 0.075-0.096mg.kg-1. The content of methyl mercury in cinnabar is 0-0.034mg.kg-1, that of inorganic mercury is 8.54-101.07mg.kg-1, and that of ethyl mercury is 0-0.82mg.kg-1. Conclusion: The method is simple, rapid, sensitive and reproducible，which can be used for the determination of soluble mercury in ice boron powder and cinnabar.
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