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- W2384238468 abstract "A new catalytic spectrophotometric method for the determination of trace lead was developed.It is based on the fact that Pb~2+ can catalyze the fading reaction of methyl orange with KBrO_3 in the medium of H_2SO_4 and in the presence of ascorbic acid.The apparent activation energy of the catalytic reaction is 185.50 kJ/mol.The apparent reaction rate constant is 2.88×10~-3/s.The optimum conditions of the reaction have been studied.The linear range of Pb~2+ is 0.000 2-0.020 μg/mL and the determination limit is 6.19×10~-8 g/L.The method has been used for the determination of trace lead in gasoline and legumes with satisfactory results." @default.
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- W2384238468 date "2006-01-01" @default.
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- W2384238468 title "Catalytic spectrophotometric determination of trace lead based on the fading reaction of methyl orange oxidized by potassium bromate" @default.
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