电感耦合等离子体质谱法测定预混矿物质中的碘
目的 建立电感耦合等离子体质谱法(inductively coupled plasma mass spectrometry, ICP-MS)测定预混料矿物质中碘元素。方法 样品经5%氨水超声提取, 通过电感耦合等离子体质谱仪, 以103Rh作为在线内标, 对样品溶液进行测定。结果 在碘浓度为0~200 μg/L的范围内, 线性关系良好, 线性方程为Y=8.173×10?4X+1.991×10?4, 相关系数r为0.9993。对预混料样品加入低、中、高3个梯度进行加标测定, 回收率在88.6%~101.0%之间, 相对标准偏差小于2.3%(n=3)。结论 该方法准确、便捷、回收率良好, 适用于不同预混料矿物质中碘含量的测定。
Objective To establish a method for the determination of iodine in premix minerals by inductively coupled plasma mass spectrometry (ICP-MS). Methods The sample was extracted by ultrasonic with 5% ammonia-water and measured by inductively coupled plasma mass spectrometer with 103Rh as the online internal standard. Results In the range of iodine concentration of 0-200 μg/L, the linear relationship was good, the linear equation was Y=8.173×10?4X +1.991×10?4, and the correlation coefficient was 0.9993. Three gradients of low, medium and high were added to the premixed sample for standard test. The recovery was between 88.6% and 101.0%, and the relative standard deviation was less than 2.3% (n=3). Conclusion The method is accurate, convenient and has a good recovery rate, which is suitable for the determination of iodine content in different premix minerals.
标题：电感耦合等离子体质谱法测定预混矿物质中的碘
英文标题：Determination of iodine in premixed minerals by inductively coupled plasma mass spectrometry
作者：
黄晓蔓 广州金域医学检验中心有限公司
李庚 广州金域医学检验中心有限公司
庞恩 广州金域医学检验中心有限公司
中文关键词:电感耦合等离子体质谱仪,碘,预混料矿物质,
英文关键词:inductively coupled plasma mass spectrometry,iodine,premix mineral,
发表日期：2018-08-03
- 文件大小:
- 88.01 MB
- 下载次数:
- 60
-
高速下载
|
