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.
出处
《食品与发酵工业》
CAS
CSCD
北大核心
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
关键词
蜂蜜
浊点萃取
火焰原子吸收法
痕量元素锰
honey, cloud point extraction, flame atomic absorption method, trace element manganese
