Determination of trace amounts of lead by adsorptive cathodic stripping voltammetry with L-3-(3,4-Dihydroxyphenyl)alanine

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Title:Determination of trace amounts of lead by adsorptive cathodic stripping voltammetry with L-3-(3,4-Dihydroxyphenyl)alanine
Creators:
Gholivand, Mohammad Bagher
Pourhossein, Alireza
Shahlaei, Mohsen
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 74, 4, pp. 599-610
Uncontrolled Keywords:Lead, Amino acids, Adsorptive stripping voltammetry, Levodopa, Waste water, Pollutants determination

Abstract

A sensitive and selective procedure is presented for the voltammetric determination of lead. The procedure involves an adsorptive accumulation of lead <span class="small_cap">L</span>-3-(3,4-dihydroxyphenyl)alanine (LDOPA) on a hanging mercury drop electrode, followed by a stripping voltammetric measurement of reduction current of an adsorbed complex at –0.15 V (vs Ag|AgCl). Optimum conditions for lead analysis include pH 8.5, 80 μM LDOPA and accumulation potential –0.15 V (vs Ag|AgCl). The peak currents are proportional to the lead concentration 1–300 nmol l<sup>–1</sup> with a detection limit of 0.6 nmol l<sup>–1</sup> and accumulation time 60 s. The method was used for the determination of lead in blood, dry tea and also in waters.

Title:Determination of trace amounts of lead by adsorptive cathodic stripping voltammetry with L-3-(3,4-Dihydroxyphenyl)alanine
Creators:
Gholivand, Mohammad Bagher
Pourhossein, Alireza
Shahlaei, Mohsen
Uncontrolled Keywords:Lead, Amino acids, Adsorptive stripping voltammetry, Levodopa, Waste water, Pollutants determination
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:74
Number:4
Page Range:pp. 599-610
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc2008175UNSPECIFIED
ID Code:4188
Item Type:Article
Deposited On:14 Apr 2009 12:50
Last Modified:14 Apr 2009 10:50

Citation

Gholivand, Mohammad Bagher; Pourhossein, Alireza; Shahlaei, Mohsen (2009) Determination of trace amounts of lead by adsorptive cathodic stripping voltammetry with L-3-(3,4-Dihydroxyphenyl)alanine. Collection of Czechoslovak Chemical Communications, 74 (4). pp. 599-610. ISSN 0010-0765

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