微波消解-ICP-MS法测定色素铝色淀中As、Pb、Ba的含量

Determination of Aluminum Lake Pigment in As, Pb, Ba Content by Microwave Digestion-ICP-MS

建立微波消解-ICP-MS法同时测定色素铝色淀中As、Pb、Ba的含量。采用微波消解系统消解色素铝色淀样品,再用美国安捷伦公司电感耦合等离子体质谱分析仪（ICP-MS7700）,以72Ge、209Bi、50Sn作为内标元素控制分析信号的动态漂移,对色素铝色淀中的As、Pb、Ba进行直接测定。As、Pb、Ba的回收率在95%~100%之间;线性相关系数均大于0.999 9。同时对国家标准物质大米[GBW 10010（GSB-1）]进行分析,测得值与标准参考值相吻合。方法检出限、准确度和精密度试验的结果均满足要求。可用于测定色素铝色淀中As、Pb、Ba的含量。

To establish a microwave digesfion-ICP-MS method for simultaneous determination of aluminum lake pigment in As, Pb, Ba content. Microwave digestion system aluminum lake pigment sample digestion, and then the United States Agilent inductively coupled plasma mass spectrometry （ICP-MS7700）, to 72^Ge, 209^Bi, 50^Sn as an internal standard element analysis of the signal to control the dynamic drift of pigment aluminum lake ofAs, Pb, Ba be measured directly.As, Pb, Ba recoveries between 95% and 100%; linear correlation coefficient greater than 0.999 9. While the national standard rice [GBW 10010 （GSB-1）] to analyze the measured value and the standard reference values coincide. The method detection limit, accuracy and precision of the results of the test requirements are met. For the determination of aluminum lake dye in AS, Pb, Ba content.