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1、光度法铝的定量测定方法系用N-亚硝基(β)苯胲铵(即铜铁灵)将钛沉淀分离,然后测定其与铬天菁S和溴代十六烷基3-乙基铵的多元络合物。极微量钙的测定,可加入草酸至试样溶液中,并通过阳离子交换树脂柱使钙吸附上去,然后用盐酸淋洗,将偶氮氯膦Ⅲ加入淋洗液,测定之。氮的测定是将试样置于氮气气氛中碱熔分离后,用百里酚法进行。高含量铌的测定可在EDTA共存下在560mm处示差测定其络合物。
1. Spectrophotometric method for the quantitative determination of aluminum Department of titanium with N-nitroso (β) benzene ammonium salt (ie, copper Tieling) precipitation, and then determine the reaction with chromium Cyanine S and brominated cetyl 3- Ethylammonium polyvalent complex. Determination of trace amounts of calcium, oxalic acid can be added to the sample solution, and through the cation exchange resin adsorption of calcium up, and then rinsed with hydrochloric acid, the chlorophosphonazo III added to the eluent, measured. Nitrogen is determined by placing the sample in a nitrogen atmosphere after alkali fusion and then using the thymol method. Determination of high content of niobium in EDTA coexistence at 560mm differential determination of its complex.