中国药房2017，Vol.28Issue(12)：1684-1686,3.DOI:10.6039/j.issn.1001-0408.2017.12.28
ICP-MS法同时测定人工蛹虫草中4种重金属元素的含量
Simultaneous Determination of Contents of 4 Heavy Metal Elements in Cultured Cordyceps militaris by ICP-MS
摘要
Abstract
OBJECTIVE:To establish the method for the simultaneous determination of contents of 4 heavy metal elements in cultured Cordyceps militaris. METHODS:The samples were digested by nitric acid heating method and then determined by ICP-MS including radio-frequency power of 1.15 kW,sampling depth of 65 nm,auxiliary gas flow rate of 1.0 L/min,cooling gas flow of 13.0 L/min,temperature of 25 ℃,automatic plasma. RESULTS:The linear ranges of arsenic(As),cadmium(Cd),mer-cury (Hg) and lead (Pb) were 0-20 μg/mL(r=0.9970),0-10 μg/mL(r=0.9995),0-5 μg/mL(r=0.9955),0-20 μg/mL(r=0.9960),respectively. Detectio limit were 0.128,0.003,0.002,0.004 mg. RSDs of precision,stability and reproducibility tests were all lower than 6.5%. Recoveries of them were 90.4%-100.6%(RSD=3.45%,n=9),94.3%-101.3%(RSD=2.93%,n=9), 90.0%-102.3%(RSD=4.03%,n=9),92.3%-103.0%(RSD=3.53%,n=9),respectively. CONCLUSIONS:The method is sim-ple,precise,stable,reproducible,and can be used for simultaneous determination of contents of 4 heavy metal elements in cul-tured C. militaris. The contents of As,Cd,Hg and Pb in 10 batches of sample are all in line with related national standards.关键词
人工蛹虫草/重金属/电感耦合等离子体质谱Key words
Cultured Cordyceps militaris/Heavy metals/ICP-MS分类
医药卫生引用本文复制引用
张勇,卓宝松,刘宝岩,康文艺..ICP-MS法同时测定人工蛹虫草中4种重金属元素的含量[J].中国药房,2017,28(12):1684-1686,3.基金项目
河南省产学研项目(No.162107000038) （No.162107000038）
河南省高等学校重点科研项目(No.17B360005) （No.17B360005）
