注射用水中20种化学因子的分析方法研究

袁利杰; 李婷婷; 郭毅; 郑子栋

注射用水中20种化学因子的分析方法研究

Analytical Methods for 20 Chemical Factors in Water for Injection

摘要

摘要:
目的建立注射用水中镁、铝、铬、铜、锌、砷、镉、锡、钡、铅、钙、钾、硒、银、钠、汞、氟离子、氯离子、硫酸根、硝酸根等20种化学因子含量的分析方法。
方法采用ICP-MS碰撞池技术(CCT), 样品直接酸化测定注射用水中16种化学因子的含量; 采用离子色谱技术(IC)测定4种阴离子的含量。
结果 ICP-MS技术测定16种元素的检出限范围为0.009~0.165 ng/mL; 回收率均在80%~120%范围之内; IC法测定F^-、Cl^-、SO₄ ^2-、NO₃ ^-的检出限在0.005~0.015 μg/mL范围内, 回收率在90%~102%范围之内。
结论上述方法简便、快速、准确, 可用于注射用水中20种化学因子的检测, 为注射用水的质量控制提供参考。

Abstract:
Objectives To establish methods for determining the content of Mg, Al, K, Ca, Cr, Cu, Zn, As, Se, Ag, Cd, Sn, Ba, Pb, Na, Hg, fluoride, chloride, sulfate and nitrate in the water for injection.
Methods The content of 16 elements in the water for injection was determined by the collision cell technology (CCT) of ICP-MS. The water samples were directly acidified, and Sc, Ge, In and Bi were used as internal standards. The contents of 4 anions were determined by ion chromatography(IC).
Results The detection limits of 16 elements detected by ICP-MS were in the range of 0.009~0.165 ng/mL, and the recoveries were in the range of 80%~120%. The detection limits of four anions detected by IC were in the range of 0.005~0.015 μg/mL, and the recoveries were in the range of 90%~102%.
Conclusions The methods used for the determination of 20 chemical factors in water were simple, rapid and accurate, and it was reliable for evaluating the quality of the water for injection.

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