Turkish Journal of Chemistry
DOI
10.3906/kim-1210-58
Abstract
Pb ions can react sensitively with dibromo-p-methylsulfonazo (DMSA) to form a blue complex, whose absorption is maximal at 630 nm. By means of the light-absorption ratio variation approach (LARVA), the direct determination of Pb was developed in 0.3 M nitric acid and plots of \Delta A_r^{-1} vs. c_{Pb}^{-1} are linear where \Delta A_r is the light-absorption ratio variation and c_{Pb} Pb(II) concentration is between 0 and 5.0 mg/L. The limit of detection (3\sigma) of Pb(II) is only 0.02 mg/L. This method was applied to direct analysis of natural water with satisfactory results.
Keywords
Light-absorption ratio variation, spectrophotometry, dibromo-p-methylsulfonazo, determination of Pb(II), natural water
First Page
987
Last Page
992
Recommended Citation
ZHANG, JIE
(2013)
"Determination of Pb(II) in natural water with dibromo-p-methyl-sulfonazo by the light-absorption ratio variation approach,"
Turkish Journal of Chemistry: Vol. 37:
No.
6, Article 14.
https://doi.org/10.3906/kim-1210-58
Available at:
https://journals.tubitak.gov.tr/chem/vol37/iss6/14
