Rapid and direct determination of glyphosate and aminomethylphosphonic acid in water using anion-exchange chromatography with coulometric detection

被引：44

作者：

Coutinho, Claudia F. B. ^{[1
]}

Coutinho, Lincoln F. M. ^{[1
]}

Mazo, Luiz H. ^{[1
]}

Nixdorf, Suzana L. ^{[2
]}

Camara, Carlos A. P. ^{[2
]}

机构：

[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13566590 Sao Carlos, SP, Brazil

[2] Univ Estadual Londrina, Dept Quim, BR-86051990 Londrina, PR, Brazil

来源：

JOURNAL OF CHROMATOGRAPHY A | 2008年 / 1208卷 / 1-2期

基金：

巴西圣保罗研究基金会;

关键词：

Anion-exchange chromatography; Coulometric detection; Glyphosate; AMPA; Copper electrode; Direct analysis;

D O I：

10.1016/j.chroma.2008.09.009

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A simple, rapid, and low-cost coulometric method for direct detection of glyphosate and aminomethylphosphonic acid (AMPA) in water samples using anion-exchange chromatography and coulometric detection with copper electrode is presented. Under optimized conditions, the limits of detection (LODs) (S/N = 3) were 0.038 mu g ml(-1) for glyphosate and 0.24 mu g ml(-1) for AMPA, without any preconcentration method. The calibration curves were linear and presented an excellent correlation coefficient. The method was successfully applied to the determination of glyphosate and AMPA in water samples without any kind of extraction, clean-up, or preconcentration step. No interferent was found in the water, like this, the recovery was, practically, 100%. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：246 / 249

页数：4

共 23 条

[1]

*ANVISA, 2006, MON PROD AGR

[2]

Bo L., 2007, CHIN J CHROMATOGR, V25, P486

[3] Analysis of glyphosate, glufosinate and aminomethylphosphonic acid by capillary electrophoresis with indirect fluorescence detection [J].

Chang, SY ;

Liao, CH .

JOURNAL OF CHROMATOGRAPHY A, 2002, 959 (1-2) :309-315

[4] Analysis of glyphosate and aminomethylphosphonic acid by capillary electrophoresis with electrochemiluminescence detection [J].

Chiu, Hsien-Yi ;

Lin, Zhen-Yu ;

Tu, Hsin-Ling ;

Whang, Chen-Wen .

JOURNAL OF CHROMATOGRAPHY A, 2008, 1177 (01) :195-198

[5] Determination of glyphosate and aminomethylphosphonic acid in natural water using the capillary electrophoresis combined with enrichment step [J].

Corbera, M ;

Hidalgo, A ;

Salvadó, V ;

Wieczorek, PP .

ANALYTICA CHIMICA ACTA, 2005, 540 (01) :3-7

[6] Investigation of copper dissolution in the presence of glyphosate using hydrodynamic voltammetry and chronoamperometry [J].

Coutinho, C. F. B. ;

Silva, M. O. ;

Calegaro, M. L. ;

Machado, S. A. S. ;

Mazo, L. H. .

SOLID STATE IONICS, 2007, 178 (1-2) :161-164

[7] Influence of glyphosate on the copper dissolution in phosphate buffer [J].

Coutinho, C. F. B. ;

Silva, M. O. ;

Machado, S. A. S. ;

Mazo, L. H. .

APPLIED SURFACE SCIENCE, 2007, 253 (06) :3270-3275

[8] Development of instrumentation for amperometric and coulometric detection using ultramicroelectrodes [J].

Coutinho, Claudia F. B. ;

Coutinho, Lincoln F. M. ;

Lancas, Fernando M. ;

Camara, Carlos A. P. ;

Nirdorf, Suzana L. ;

Mazo, Luiz H. .

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY, 2008, 19 (01) :131-139

[9] Copper microelectrode as liquid chromatography detector for herbicide glyphosate [J].

Coutinho, Claudia F. B. ;

Coutinho, Lincoln F. M. ;

Mazo, Luiz H. ;

Lancas, Fernando M. .

ELECTROANALYSIS, 2007, 19 (11) :1223-1226

[10] Direct determination of glyphosate using hydrophilic interaction chromatography with coulometric detection at copper microelectrode [J].

Coutinho, Claudia F. B. ;

Coutinho, Lincoln F. M. ;

Mazo, Luiz H. ;

Nixdorf, Suzana L. ;

Camara, Carlos A. P. ;

Lancas, Fernando M. .

ANALYTICA CHIMICA ACTA, 2007, 592 (01) :30-35

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