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- W2352904237 abstract "A new catalytic spectrophotometric method for the determination of trace amount of manganese(Ⅱ) has been developed. The method is based on oxidation of TB-Chlorophosphonazo by potassium periodate in HAc-NaAc medium in the presence of nitric tri-acetic acid act as activator. The optimum reaction conditions are studied. The reaction rate equation is found to be: ( )lg A0 A= K?Δt?CMn(∏) and the apparent reaction activation to be Ea′=37.73 kJ/mol,apparent reaction rate constant to be k′=8.85×10-4s-1 .The detection limit of the method is 2.3×10-9 g/mL. The linear ranges for the determination of Manganese(Ⅱ) is 0.0～10.0 ng/mL. Satisfactory results are obtained for the determination of trace Manganese(Ⅱ) in Chinese matrimony-vine , tea and water sample in environment." @default.
- W2352904237 created "2016-06-24" @default.
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- W2352904237 date "2008-01-01" @default.
- W2352904237 modified "2023-09-24" @default.
- W2352904237 title "Study on the determination of trace manganese(II) by TB-chlorophosphonazo-Mn(II)-KIO_4 system" @default.
- W2352904237 hasPublicationYear "2008" @default.
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