Comparison of different sorbents for multiresidue solid-phase extraction of 16 pesticides from groundwater coupled with high-performance liquid chromatography

被引:100
作者
D'Archivio, Angelo Antonio [1 ]
Fanelli, Maria [1 ]
Mazzeo, Pietro [1 ]
Ruggieri, Fabrizio [1 ]
机构
[1] Univ Aquila, Dipartimento Chim Ingn Chim & Mat, I-67010 Coppito, Italy
关键词
pesticides; solid-phase extraction; multiresidue analysis; HPLC; groundwater;
D O I
10.1016/j.talanta.2006.03.016
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A procedure based on solid-phase extraction (SPE) followed by high-performance liquid chromatography (HPLC) with diode array detection has been developed for the simultaneous analysis of 16 widely used pesticides in groundwater samples. The compounds analysed were: aldicarb, atrazine, desethylatrazine, desysopropylatrazine, carbofuran, 2,4-D, dicloran, fenitrothion, iprodione, linuron, metalaxyl, metazachlor, phenmedipham, procymidone. simazine and vinclozolin. Five different SPE sorbents, C-18 bonded silica (Isolute SPEC18 (EC)), graphitised carbon black (Superclean Envi-Carb), highly cross-linked polystyrene-divinylbenzene (Lichrolut EN), divinylbenzene-N-vinyl pyrrolidone (Oasis HLB) and surface modified styrene-divinyl benzene (Strata X), were compared. HPLC separation and quantification of the selected pesticides was carried out under isocratic conditions by means of a new reversed-phase column (Gemini from Phenomenex) based on C-18 bonded to organic-silica particles. Oasis HLB and Strata X provided the best results in the preconcentration of 1-1 samples, yielding average recoveries higher than 70%, except for phenmedipham that rapidly degrades in groundwater. Detection limits of the target pesticides provided by the proposed SPE-HPLC procedure were between 0.003 and 0.04 mu g(-1). (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:25 / 30
页数:6
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