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１引言用原子吸收光谱法（ＡＡＳ）测定生物样品中微量元素前常需对样品进行灰化或消化处理，操作繁琐、易产生误差且污染环境。有人曾用聚乙二醇辛基苯基醚（ＯＰ乳化剂）溶液对奶粉进行抽取，通过火焰原子吸收光谱法（ＦＡＡＳ）测定静置分层后的液相中的钙，省去了费事的前?
1 Introduction Determination of trace elements in biological samples by atomic absorption spectrometry (AAS) often require ashing or digestion of samples, the operation is cumbersome, easy to produce errors and pollute the environment. It has been used polyethylene glycol octyl phenyl ether (OP emulsifier) solution to extract the milk powder by flame atomic absorption spectrometry (FAAS) Determination of static stratified liquid phase of calcium, eliminating the laborious before?