浊点萃取-火焰原子吸收法(CPE-FAAS)测定蜂蜜中痕量锰  

Determination of trace manganese in honey by cloud point extracton-flame absorption spectrometry

作　　者：杜军良[1] 尤海霞[1] 胡杨[1] 王秀峰[1] 

机构地区：[1]绵阳师范学院化学与化学工程学院,四川绵阳621000

出　　处：《食品与发酵工业》2013年第2期192-195,共4页Food and Fermentation Industries

基　　金：四川省教育厅自然科学基金项目(08ZA169)资助

摘　　要：研究了以8-羟基喹啉为络合剂,非离子表面活性剂TritonX-100为萃取剂的浊点萃取-火焰原子吸收光谱法(CPE-FAAS)测定蜂蜜中痕量Mn(Ⅱ)的方法。研究了pH值,平衡时间,离子强度,萃取剂用量,以及络合剂用量和共存离子干扰等对萃取效果的影响。方法线性范围为100～700 ng/mL,检出限为5.74 ng/mL,相对标准偏差为1.68%(n=11),回收率为97.3%～98.6%。A new method for determination of trace manganese （II） in honey by flame atomic absorption spec- trometry combined with cloud point extraction was developed. The cloud point extraction system was based on TritonX- 100 as surfactant and 8-Oxyquinoline as complexing agent. The parameters affecting cloud point extraction, including pH, extraction temperature, time, ionic strength, dosage of extraction agent and complexing agent were investigated and optimized. Under the optimum conditions, a good linear relationship was observed for manganese （II） in the range of 100 -700 ng/mL with the detection limit of 5.74 ng/mL and the relative standard deviations of 1.68% （n = 11 ）. The recoveries were in the range of 97.3% -98.6%. The method was rapid, accurate, simple and suitable to apply in the determination of manganese （II） in honey.

关 键 词：蜂蜜 浊点萃取 火焰原子吸收法 痕量元素锰 

分 类 号：S896.1[农业科学—特种经济动物饲养] O657.31[农业科学—畜牧兽医]