Detection of s-triazine pesticides in natural waters by modified large-volume direct injection HPLC

TALANTA

卷:82

Article

Beale, David J.^1,3  Kaserzon, Sarit L.¹  Porter, Nichola A.^1,3  Roddick, Felicity A.^2,3  Carpenter, Peter D.¹ 

[1] RMIT Univ, Sch Appl Sci Appl Chem, Melbourne, Vic 3001, Australia

[2] RM1T Univ, Sch Civil Chem & Environm Engn, Melbourne, Vic 3001, Australia

[3] CRC Water Qual & Treatment, Water Qual Res Australia, Salisbury, SA 5108, Australia

关键词: Atrazine;    Direct injection HPLC;    Large-volume injection;    Monolithic column;    Hexazinone;    Natural organic matter;    Natural waters;    Simazine;   

DOI  :  10.1016/j.talanta.2010.05.030

来源: Elsevier

【 摘 要 】

There is a need for simple and inexpensive methods to quantify potentially harmful persistent pesticides often found in our water-ways and water distribution systems. This paper presents a simple, relatively inexpensive method for the detection of a group of commonly used pesticides (atrazine, simazine and hexazinone) in natural waters using large-volume direct injection high performance liquid chromatography (HPLC) utilizing a monolithic column and a single wavelength ultraviolet-visible light (UV-vis) detector. The best results for this system were obtained with a mobile phase made up of acetonitrile and water in a 30:70 ratio, a flow rate of 2.0 mL min(-1), and a detector wavelength of 230 nm. Using this method, we achieved retention times of less than three minutes, and detection limits of 5.7 mu g L-1 for atrazine, 4.7 mu g L-1 for simazine and 4.0 mu g L-1 for hexazinone. The performance of this method was validated with an inter-laboratory trial against a National Association of Testing Authorities (NATA) accredited liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS) method commonly used in commercial laboratories. (C) 2010 Elsevier B.V. All rights reserved.

【 授权许可】

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