摘要
目的：建立料酒中铜、锰、锌、硒、铁、镉、铅（Cu，Mn，Zn，Se，Fe，Cd，Pb）7种微量元素的电感耦合等离子体（ICP）一质谱（MS）直接测定法。方法：样品经1％硝酸溶液稀释10倍后，采用ICP-MS法直接分析稀释液中的铜、锰、锌、硒、铁、镉、铅等微量元素。结果：测定的17种不同料酒中，铜、锰、锌、硒、铁、镉、铅含量的均值分别为457．0，141．7，239．7，1．60，433．5，1．10，3．41μg／kg。各元素回收率为91．29，6～106．7％，相对标准偏差均小于3．8％，检出限范围为0．003～O．657μg／L。结论：该方法具有准确、快速、简便等优点，完全满足料酒中铜、锰、锌、硒、铁、镉、铅等微量元素的检测要求。
Objective： To establish a method for the direct determination of seven trace elements such as copper, manganese, zinc, selenium, iron, cadmium and lead in cooking wine by inductively coupled plasma-mass spectrometry. Methods. The samples are diluted for 10 times by 1% nitric acid solution,and the trace elements such as copper, manganese, zinc, selenium, iron, cadmium and lead in diluted solution are directly analyzed by ICP-MS. Results. The mean content of copper, manganese, zinc, selenium, iron, cadmium and lead in 17 cooking wine samples is 457.0, 141.7, 239.7, 1.60, 433.5,1.10, 3.41 μg/kg respectively. The recoveries of the above mentioned elements range from 91.2% to 106.7%, while RSDs are less than 3.8%. The detection limits of seven minor elements are 0. 003~ 0. 657 μg/L. Conclusion： The method is accurate, rapid, simple and completely meet the requirements of the determination of copper, manganese, zinc, selenium, iron, cadmium and lead in cooking wine.
出处
《中国调味品》
CAS
北大核心
2016年第7期134-137,共4页
China Condiment
关键词
电感耦合等离子体质谱
料酒
微量元素
inductively coupled plasma-mass spectrometry （ICP-MS）
cooking wine
trace element
