DETERMINATION OF TRACE AMOUNTS OF LEAD AS IODIDE COMPLEX BY 3RD-ORDERDERIVATIVE SPECTROPHOTOMETRY

Authors
OBARSKI N MARCZENKO Z
Citation
N. Obarski et Z. Marczenko, DETERMINATION OF TRACE AMOUNTS OF LEAD AS IODIDE COMPLEX BY 3RD-ORDERDERIVATIVE SPECTROPHOTOMETRY, Chemia Analityczna, 39(5), 1994, pp. 577-584
Citations number
16
Categorie Soggetti
Chemistry Analytical
Journal title
Chemia Analityczna → ACNP
ISSN journal
00092223
Volume
39
Issue
5
Year of publication
1994
Pages
577 - 584
Database
ISI
SICI code
0009-2223(1994)39:5<577:DOTAOL>2.0.ZU;2-I
Abstract
Third-order derivative spectrophotometry was used for the direct deter mination of trace amounts of lead as its iodide complex. Optimum condi tions for the formation of the lead iodide complex as well as conditio ns for spectrum registration and obtaining its successive derivatives were chosen. The derivatives were calculated numerically using Savitzk y-Golay method. The proposed direct method has been applied for determ ining lead (ca. 10(-4)%) in potassium iodide, zinc sulphate and cadmiu m sulphate with good precision and accuracy.