电感耦合等离子体质谱法测定柑橘皮中18种元素

Determination of 18 elements in citrus peel by inductively coupled plasma mass spectrometry

目的建立电感耦合等离子体质谱法测定柑橘皮中Al、As、B、Ba、Cd、Cr、Cu、Fe、Hg、Mn、Ni、Pb、Se、Sn、Sr、Ti、Zn、Sb 18种元素含量的分析方法。方法采用电感耦合等离子体质谱法通过微波消解以及在线内标校正,自带动能歧视模式消除干扰,验证了线性范围、检出限、精密度和回收率。结果该方法线性范围10~100μg/L,检出限为0.0001~0.4202μg/L,回收率为83.0%~107.4%,相对标准偏差为0.61%~3.62%。结论该方法简单、快速、准确,适用于柑橘皮中多种元素同时测定。

Objective To establish a method for the determination of 18 metal elements including Al、As、B、Ba、Cd、Cr、Cu、Fe、Hg、Mn、Ni、Pb、Se、Sn、Sr、Ti、Zn、Sb in citrus peel by inductively coupled plasma mass spectrometry.Methods Through microwave digestion and on-line internal standard correction by inductively coupled plasma mass spectrometry.The interference by built-in kinetic energy discrimination mode was eliminated.The linear range,detection limit,precision and recovery rate were verified.Result The linear range of the method was 10-100μg/L,the detection limit was 0.0001-0.4202μg/L,the rate of recovery was 83.0%-107.4%,and the relative standard deviation was 0.61%-3.62%.Conclusion This method is simple,rapid and accurate,which is suitable for the simultaneous determination of multiple elements in citrus peel.