Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/93552
Title: Determination of molybdenum using polarographic catalytic current
Authors: Hong-Bin, H.
Kok-Siong, S.
Hua, C. 
Zhi-Qiang, G. 
An-Kong, H.
Keywords: Catalytic methods
Differential pulse polarography
Molybdenum
Sodium bromate
Issue Date: 20-Jun-1995
Source: Hong-Bin, H.,Kok-Siong, S.,Hua, C.,Zhi-Qiang, G.,An-Kong, H. (1995-06-20). Determination of molybdenum using polarographic catalytic current. Analytica Chimica Acta 309 (1-3) : 73-78. ScholarBank@NUS Repository.
Abstract: Trace levels of molybdenum can be determined by differential pulse polarography, based on the catalytic effect of the molybdenum-PAR [4-(2-pyridylazo)-resorcinol] complex on the reduction of sodium bromate. The powerful oxidant, sodium bromate, increases the peak current for the reduction of the molybdenum-PAR complex by about 5 times. Under optimal conditions, molybdenum at the μg l-1 level can be easily determined. The detection limit is 0.22 μg l-1; the response is linear over the range of 1.0 × 10-8 to 1.0 × 10-7 M; and the relative standard deviation at 1.0 × 10-7 M molybdenum is 2.77%. Most cations do not interfere in the determination of molybdenum. © 1995.
Source Title: Analytica Chimica Acta
URI: http://scholarbank.nus.edu.sg/handle/10635/93552
ISSN: 00032670
Appears in Collections:Staff Publications

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