摘要
采用微波消解的方法对中草药薄雪火绒草进行消解,用火焰原子吸收光谱法对薄雪火绒草中的Ca、Mg、Fe、Zn四种微量金属元素含量进行测定。在最优的实验条件下,测得各金属元素的含量分别为Ca:5151.27μg/g、Mg:1675.20μg/g、Fe:970.08μg/g、Zn:144.76μg/g。各元素的相关系数为:0.9978~0.9997,RSD值为:0.48%~1.31%,加标回收率为:98.0%~108.3%,检出限为0.0028μg/m L^0.0432μg/m L。
The Chinese herbal medicine Leontopodium japonicum miq were dissolved with microwave digestion method. The amount of four rare metal elements Ca、Mg、Fe、Zn in it are determined with flame atomic absorption spectrum. Under the optimal experimental conditions,the experiment measured the contents of metal element respectively. The result is Ca： 5151. 27μg·g-（-1）,Mg： 1675. 20μg·g-（-1）,Fe： 970. 08μg·g-（-1）,Zn： 144. 76μg· g-（-1）. The correlation coefficient of the elements are 0. 9978 to 0. 9997. RSD is 0. 48% to 1. 31% respectively. The recovery rate is 98. 0% to 108. 3%. The detection limit of each element is 0. 0028 to 0. 0432μg·m L-（-1）.
作者
胡庆兰
但雅倩
HU Qing-lan;DAN Ya-qian(Hubei Key Laboratory of Purification and Application of Plant Anti-cancer Active Ingredients,College of Chemistry and Life Science,Hubei University of Education,Wuhan 430205,China)
出处
《湖北第二师范学院学报》
2018年第2期5-8,共4页
Journal of Hubei University of Education
关键词
微波消解法
火焰原子吸收光谱法
中草药
薄雪火绒草
微量金属元素
microwave digestion method
flame atomic absorption spectrum
Chinese herbal medicine
Leon-topodium japonicum miq
trace metal element
