The optimum conditions of discoloring reaction of DBM-arsenazo oxidized by potassium bromate and catalyzed by trace titanium(Ⅳ)are studied and a new catalytic-kinetic spectrophotometric method for determination of tr...The optimum conditions of discoloring reaction of DBM-arsenazo oxidized by potassium bromate and catalyzed by trace titanium(Ⅳ)are studied and a new catalytic-kinetic spectrophotometric method for determination of trace titanium is developed.The linear range of determination of titanium(Ⅳ)is 0-48 ng/mL at 530 nm.The detection limit of the method is 0.084 ng/mL.The method is used for the determination of titanium in water samples and the analytical results are in excellent agreement with those by atomic absorption spectrometry.展开更多
文摘The optimum conditions of discoloring reaction of DBM-arsenazo oxidized by potassium bromate and catalyzed by trace titanium(Ⅳ)are studied and a new catalytic-kinetic spectrophotometric method for determination of trace titanium is developed.The linear range of determination of titanium(Ⅳ)is 0-48 ng/mL at 530 nm.The detection limit of the method is 0.084 ng/mL.The method is used for the determination of titanium in water samples and the analytical results are in excellent agreement with those by atomic absorption spectrometry.