CAJ | 학술논문

采用湿法消解处理样品,运用电感耦合等离子体原子发射光谱法对茶叶中铅铬绿(即重金属铅和铬2种元素)进行分析.对样品前处理方法进行了研究,从消解体系、酸用量、加热程序等方面对湿法消解条件进行了优化.结果表明:在优化实验条件下,方法检出限为0.01583~0.02715 mg/L,相对标准偏差(RSD,n=6)为2.12%~3.07%,加标回收率为91.9%~106%.该方法具有操作简便,快速,灵敏度高和准确度好等优点.
채용습법소해처리양품,운용전감우합등리자체원자발사광보법대다협중연락록(즉중금속연화락2충원소)진행분석.대양품전처리방법진행료연구,종소해체계、산용량、가열정서등방면대습법소해조건진행료우화.결과표명:재우화실험조건하,방법검출한위0.01583~0.02715 mg/L,상대표준편차(RSD,n=6)위2.12%~3.07%,가표회수솔위91.9%~106%.해방법구유조작간편,쾌속,령민도고화준학도호등우점.
The Lead Chrome Green (two heavy metal elements of lead and chromium ) in the tea by wet diges-tion are detected by inductive coupled plasma atomic emission spectrometry (ICP-AES).The wet digestion condition is optimized from digestion system ,proportion of acids and heating procedure .The results show that the method of detection limit is in the range of 0.015 83~0.027 15 mg/L,with the relative standard deviations (RSD,n=6) of 2.12%~3.07%,and the recoveries are 91.9%~106% under the optimization experiment con -dition.The method is simple operation,rapid, high sensitivity and reliable.