摘要
建立了ICP-MS法同时测定桉叶油中有害重金属元素铅、镉、砷、铬、汞的实验方法.样品经微波消解后,直接用ICP-MS同时测定上述5种元素,结果显示5种元素的检出限分别为Pb:3.0μg/kg、Cd:0.4μg/kg、As:3.4μg/kg、Cr:2.6μg/kg,Hg:52.4μg/kg;所有元素相关系数r≥0.999 7;相对标准偏差RSD<5%;回收率在80.6%~116.1%之间.该法简便、测定速度快、结果准确,适用于桉叶油等精油中有害金属元素的测定.
A method for the determination of Pb, Cd, As, Cr and Hg in the oil of Eucalyptus by ICP - MS was established. The five elements were detected simultaneously after the microwave digestion of the samples. The detection limits of these elements were Pb: 3.0μg/kg, Cd: 0.4 μg/kg, As: 3.4μg/kg, Cr: 2.6μg/kg, Hg: 52.4 μg/kg respectively ;the linear correlation r ≥0.999 7 ;the relative standard deviation RSD 〈 5% ;and the recoveries of samples were the range of 80.6% - 116. 1%. This method is simple, fast, accurate and can meet the demand for harmful metal analysis in essential oil Eucalyptu.
出处
《云南民族大学学报(自然科学版)》
CAS
2013年第2期82-85,共4页
Journal of Yunnan Minzu University:Natural Sciences Edition
基金
国家自然科学基金(20762013)
云南省推进标准化发展战略专项资金(2010-007)
关键词
ICP—MS
桉叶油
重金属
ICP - MS
oil of Eucalyptus
harmful metals