【摘要】 以含水量８０％的阴离子型ＳＤＳ／ｎ－Ｃ＿（５）Ｈ＿（１１）ＯＨ／ｎ－Ｃ＿（７）Ｈ＿１６／Ｈ＿（２）Ｏ微乳液为介质，进行了Ｎｉ（Ⅱ）－５－Ｂｒ－ＰＡＤＡＰ的分光光度研究，其表观摩尔吸光系数为１．１３×１０￣５Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１），与相应含水量的ＳＤＳ胶束介质比较，测定的灵敏度显著提高（后者为７．５×１０￣４Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）），样品分析结果令人满意。更多还原

【Abstract】 he senskized reaction of O/W anionic-microemulsion SDS/n-C₅H₁₁OH/n-C₇H₁6/H₂Oas medium for nickel with 2-（5-bromo-2-pyridylazo ）-5-diethylaminophenol complexeswas studied at 10～25℃,Thresults showedthat the maximum absorption wavelength was560nm,and the sensitivity in SDS/n-C₅H₁₁OH-n-C₇H₁6/H₂O O/W microemulsion mediumwas higher than that in SDS micelle medium.The molar absorptvity is 1.10×10￣5 L·mol￣（-1）·Cm￣（-1）.Heer’s law is oheved in the concentra-tion range of 0～10mg/10L.The method hasbeen used for the rapid determination of traceNi（Ⅱ）in aluminium alloy and low alloy steel.更多还原