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Extraction-Spectrophotometric Determination of Mercury(II) using Nicotinaldehyde-4-phenyl-3-thiosemicarbazone
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1994, v.7 no.4, pp.455-460
Lee,
J., Uesugi,
K., Choi,
W., Kim,
J., &
Kim,
D.
(1994). Extraction-Spectrophotometric Determination of Mercury(II) using Nicotinaldehyde-4-phenyl-3-thiosemicarbazone. Analytical Science and Technology, 7(4), 455-460.
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Abstract
A selective extraction-spectrophotometric method for the determination of mercury(II) with nocotinaldehyde-4-phenyl-3-thiosemicarbazone(NPS) was described. The method is based on the formation of an insoluble mercury-NPS complex, which is extratable into chloroform from an aqueous solution at pH 3.5 by shaking for 3 min. The absorbance is measured at 365nm and the molar absorptivity is <TEX>$2.45{\times}10^4L\;mol^{-1}\;cm^{-1}$</TEX>. The complex system conforms to Beer's law for up to <TEX>$18{\mu}g\;mL^{-1}$</TEX> of mercury(II). The proposed method is simple and selective and has been satisfactorily applied to the determination of mercury in standard human hair sample.
- keywords
- Extraction-Spectrophotometry, Mercury Nicotinaldehyde-4-phenyl-3-thiosemicarbazone(NPS)
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