电感耦合等离子体质谱法测定柳州螺蛳粉中12种元素

Determination of 12 elements in Liuzhou river snails rice noodle by inductively coupled plasma mass spectrometry

目的建立电感耦合等离子体质谱法测定柳州螺蛳粉中12种元素含量的分析方法。方法采用硝酸+双氧水进行微波消解,电感耦合等离子体质谱法进行测定,并对方法的线性范围、检出限、相对标准偏差及回收率进行方法学考察。结果各元素在相应的浓度范围内呈良好的线性关系,相关系数为0.9974~0.9999,检出限为0.0005~0.008 mg/kg,精密度相对标准偏差(relative standard deviation,RSD)为1.2%~4.0%,回收率为86.5%~97.0%。结论本研究建立的方法准确、可靠、灵敏度高,适用于柳州螺蛳粉中12种元素测定。

Objective To establish a method for the determination of 12 elements in Liuzhou river snails rice noodle by inductively coupled plasma mass spectrometry. Methods The samples were treated by nitric acid and H2O2 microwave digestion,detected by inductively coupled plasma mass spectrometry,and the methodologies of linear range,limit of detection,relative standard deviations and recovery rate of the method were investigated. Results Each elements had good linear relationships in the ranges of the corresponding concentration,the correlation coefficients were 0.9974-0.9999,the limits of detection were 0.0005-0.008 mg/kg,precision relative standard deviations were 1.2%-4.0%,and the recovery rates were 86.5%-97.0%. Conclusion This method is accurate,reliable and sensitive,and is suitable for the quantitative determination of 12 elements in Liuzhou river snails rice noodle.