微波消解ICP-AES法测定马奶酒中多种微量元素

摘要

In the experiments, the content of 15 kinds of trace elements (Ca, Mg, Mn, Ag, Cd, Cr, As, Zn, Fe, Cu, Ni, Pb, Al, Co, Sr) in three dif-ferent kinds of kumiss were measured by ICP-AES coupled with microwave digestion. The results showed that, kumiss from different produc-ing places contains a variety of trace elements, but the content of each trace element is different. Kumiss sample (1#) had the highest Ca and Mg content (135.37μg/g and 25.634μg/g, respectively).The content of Ca and Mg in kumiss sample (2#) were 101.94μg/g and 16.969μg/g re-spectively. And the content of Ca and Mg in kumiss sample (3#) were 79.648μg/g and 16.543μg/g respectively. The relative standard deviation (RSD) was less than or equal to 4.31%,and the detection limit was below or equal to 0.009μg/mL.%采用微波消解ICP-AES法测定了3种马奶酒中Ca、Mg、Mn、Ag、Cd、Cr、As、Zn、Fe、Cu、Ni、Pb、Al、Co、Sr等15种微量元素的含量。结果表明，不同产地的马奶酒中均含有多种微量元素，但各元素的含量有所差异。马奶酒（1#）中Ca含量最高为135.37μg/g，其次是Mg，为25.634μg/g。马奶酒（2#）中Ca含量为101.94μg/g，其次是Mg，为16.969μg/g。马奶酒（3#）中Ca含量为79.648μg/g，其次是Mg，为16.543μg/g。相对标准偏差RSD≤4.31%，检出限≤0.009μg/mL。