Optimization of a cloud point extraction procedure with response surface methodology for the quantification of dissolved iron in produced water from the petroleum industry using FAAS

被引：18

作者：

Gondim, Tamyris A. ^{[1
]}

Guedes, Jhonyson A. C. ^{[1
]}

Ribeiro, Livia P. D. ^{[2
]}

Lopes, Gisele S. ^{[1
]}

Matos, Wladiana O. ^{[1
]}

机构：

[1] Univ Fed Ceara, Dept Quim Analit & Fis Quim, Lab Estudos Quim Aplicada, Campus Pici, BR-60451970 Fortaleza, Ceara, Brazil

[2] Univ Integracao Int Lusofonia Afrobrasileira, Campus Palmares,Km 51, BR-62785000 Acarape, CE, Brazil

来源：

MARINE POLLUTION BULLETIN | 2017年 / 114卷 / 02期

关键词：

Cloud point extraction; Produced water; Iron; FAAS; Box-Behnken design; ATOMIC-ABSORPTION-SPECTROMETRY; ANALYTICAL-CHEMISTRY; PRECONCENTRATION; SEPARATION; DESIGN; COBALT; OIL; SPECIATION; EFFLUENTS; MANGANESE;

D O I：

10.1016/j.marpolbul.2016.10.068

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The characterization of inorganic elements in the produced water (PW) samples is a difficult task because of the complexity of the matrix. This work deals with a study of a methodology for dissolved Fe quantification in PW from oil industry by flame atomic absorption spectrometry (FAAS) after cloud point extraction (CPE). The procedure is based on the CPE using PAN as complexing agent and Triton X-114 as surfactant. The best conditions for Fe extraction parameters were studied using a Box-Behnken design. The proposed method presented a LOQ of 0.010 mu g mL(-1) and LOD of 0.003 mu g mL(-1). The precision of the method was evaluated in terms of repeatability, obtaining a coefficient of variation of 2.54%. The accuracy of the method was assessed by recovery experiments of Fe spiked that presented recovery of 103.28%. The method was applied with satisfactory performance to determine Fe by FAAS in PW samples. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：786 / 791

页数：6

共 29 条

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