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Determination of molybdenum in sea water by solid-phase spectrophotometry

✍ Scribed by Isoshi Nukatsuka; Akira Nishimura; Kunio Ohzeki

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
471 KB
Volume
304
Category
Article
ISSN
0003-2670

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✦ Synopsis

A simple and sensitive spectrophotometric method for the determination of molybdenum(W) in sea water samples was developed. It is based on the extraction of the M~VI)-phenylfluorone complex on a membrane filter by simple ~ltration and direct measurement of the absorbance on the fiiter. The extraction was done in the presence of zephiramine and only 2-10 ml of sample solution was required. No preliminary treatment of the sea water sample was required to isolate molybdenum(VI) from the matrix. The absorbance was measured by the zero and first derivative modes. The tolerance limit for foreign ions was improved by measuring the first derivative absorbance.

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