Basak, A C and Ghosh, K C and Sircar, J K and Paul, A R and Pandey, L P and Bhattacharjee, S (1996) A Sensitive Method for the Determination of Silicon by Molecular Absorption Spectroscopy. Microchemical Journal, 54 (1). pp. 48-53.
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A sensitive molecular absorption spectrophotometric (MAS) method has been developed for the estimation of silicon in iron and steel samples. The method is based on the typical property of silicon to form molybdosilicic acid in the acid medium in which 1 silicon atom binds 12 molybdenum atoms. The molybdosilicic acid is extracted byn-butanol and the attached molybdenum is stripped and back extracted into aqueous phase using 1:1 NH4OH. The stripped molybdenum is determined using a sensitive MAS method involving molybdenum–pyrocatecholviolet (PCV)–Cetyltrimethyl-ammoniumbromide (CTAB) ternary ion association complex (1). Phosphorus and arsenic interfere significantly but may be masked with tartaric acid.
|Uncontrolled Keywords:||Molecular Absorption Spectroscopy|
|Divisions:||Corrosion and Surface Engineering|
|Deposited By:||Sahu A K|
|Deposited On:||14 May 2010 11:14|
|Last Modified:||13 Dec 2011 16:21|
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