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长碳链两性表面活性剂十八烷基二甲基氨基乙酸和乳化剂OP对锆与铬天青B的显色反应有很强的增敏作用,摩尔吸光系数达1.98×10~5L·mol~(-1)·cm~(-1)。而且反应可在较高酸度(PH1.0～1.5)进行,因而具有良好的选择性。方法成功地应用于铝镁合金、铜合金、镍合金和钴合金等合金样品中微量锆的直接测定。
Long-chain amphoteric surfactants Octadecyldimethylaminoacetic acid and emulsifier OP have a strong sensitizing effect on the color reaction of zirconium and chrome azure B with a molar absorption coefficient of 1.98 × 10 ~ 5L · mol ~ (-1) · cm ~ (-1). And the reaction can be carried out in the higher acidity (PH1.0 ~ 1.5), which has good selectivity. The method has been successfully applied to the direct determination of trace zirconium in the alloy samples of aluminum-magnesium alloy, copper alloy, nickel alloy and cobalt alloy.