高压密闭非完全消化-FAAS测定奶粉中高含量钙  

Determination of High Calcium Content in Milk Powder Using Incomplete Digestion-Flame AAS Method

作　　者：徐引娟[1] 张烂漫 袁惠娟[1] 汤蔚莉[1] 

机构地区：[1]上海大学理学院,上海200444 [2]上海市南汇区环境监测站,上海201300

出　　处：《上海大学学报（自然科学版）》2006年第2期200-202,共3页Journal of Shanghai University:Natural Science Edition

摘　　要：样品经HNO3-H2O2高压密闭非完全消化，加入聚乙二醇辛基醚（OP-10）乳化剂处理试液，以La2O3为释放剂，用FAAS测定奶粉中高含量钙；同时对消化时间、消化剂以及OP-10用量等进行了优化选择．实验结果表明，此方法回收率达到101％-104％，精密度为0．29％．A method of incomplete digestion with flame atomic absorption spectrometry （FAAS） for the determination of high calcium content in milk powder is reported. The sample milk powder was incompletely digested with HNO3-H2O2 in a pressurized vessel. Emulsifier OP-10 and releasing agent lanthanum were added for FAAS determination of calcium. Parameters were optimized. Recovery of the method was in the range of 101% - 104% with RSD 0.29%.

关 键 词：原子吸收光谱 奶粉 钙 非完全消化 

分 类 号：O657.31[理学—分析化学]