UV-Assisted Digestion of Petrochemical Industry Effluents Prior to the Determination of Zn, Cd, Pb and Cu by Differential Pulse Anodic Stripping Voltammetry

被引：5
|
作者：
Domingos, Daniela [1 ,2 ]
Ferreira Neta, Maria de Lourdes S. [1 ]
Massa, Ana Rosa C. G. [1 ]
Reboucas, Marcio V. [3 ]
Teixeira, Leonardo S. G. [2 ,4 ]
机构：
[1] Unidade Insumos Basicos Bahia, Braskem SA, BR-42810000 Camacari, BA, Brazil
[2] Univ Fed Bahia, Inst Quim, Campus Univ Ondina, BR-40170115 Salvador, BA, Brazil
[3] GranBio, BR-13069320 Campinas, SP, Brazil
[4] Univ Fed Bahia, INCT Energia & Ambiente, Campus Univ Ondina, BR-40170115 Salvador, BA, Brazil
来源：
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 2016年 / 27卷 / 09期
关键词：
petrochemical effluent; voltammetry; determination of metals; experimental design; ultraviolet-digestion; WATER SAMPLES; TRACE-METALS; ENVIRONMENTAL-SAMPLES; OPTIMIZATION; CADMIUM; ELECTRODES; SPECIATION; BEHAVIOR; CD(II); PB(II);
D O I：
10.5935/0103-5053.20160039
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A petrochemical effluent is usually a matrix of very high complexity and composition variability, requiring robust and suitable methods for routine analysis. In this paper, the feasibility of applying a voltammetric technique for the determination of metals species in the petrochemical industry effluent was demonstrated after UV-assisted digestion procedure. Voltammetric (electrolyte volume, deposit time, pulse time, pulse amplitude and scan rate) and digestion variables (hydrogen peroxide volume, nitric acid volume and digestion time) were studied using a 2-level factorial design. The developed voltammetric method using anodic stripping voltammetry (ASV) presented limits of quantification of 11, 5, 15 and 5 mu g L-1 for Zn, Cd, Pb and Cu, respectively, and was effective to analyze petrochemical effluents after UV-digestion.
引用
收藏
页码：1594 / 1601
页数：8
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