Bhadani, S N and Tewari, M and Agrawal, A and Sekhar, K C (1994) Extraction-spectrophotometric determination of nickel as ni-(par)(2)-(ctab)(2) complex in polymetallic sea-bed nodules and steels. Fresenius journal of analytical chemistry, 349 (6). pp. 478-481.
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A red, water-soluble complex of nickel with PAR can be extracted into chloroform with CTAB at pH 7.0. The system obeys Beer's law upto 0.5 mug/ml with a molar absorptivity of 45 200 L . mol-1 . cm-1 at 540 nm. Job's method of continuous variations revealed that the composition of the extracting species is 1:2:2 for nickel:PAR:CTAB. Based on this extraction, a highly sensitive and selective spectrophotometric method for the determination of nickel in polymetallic sea-bed nodules and in steels, after prior separation of iron and manganese, was developed. The standard deviation was 0.04 - 0.127 mug for 5 - 25 mug of nickel.
|Uncontrolled Keywords:||Atomic-Absorption Spectrometry|
|Divisions:||Metal Extraction and Forming|
|Deposited By:||Sahu A K|
|Deposited On:||11 Jun 2010 12:15|
|Last Modified:||13 Dec 2011 16:31|
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