Arid
DOI10.1016/j.aca.2017.02.007
Passive sampling of anionic pesticides using the Diffusive Gradients in Thin films technique (DGT)
Guibal, Robin; Buzier, Remy; Charriau, Adeline; Lissalde, Sophie; Guibaud, Gilles
通讯作者Buzier, Remy
来源期刊ANALYTICA CHIMICA ACTA
ISSN0003-2670
EISSN1873-4324
出版年2017
卷号966页码:1-10
英文摘要

DGT passive samplers using Oasis (R) HLB or Oasis (R) MAX sorbent were developed for anionic pesticides sampling. They were tested using four model compounds (i.e. bentazon, chlorsulfuron, ioxynil and mecoprop). Polyacrylamide diffusive gel was found to be more suitable than agarose gel for most anionic pesticides sampling. An elution procedure was optimized and diffusion coefficients were determined for quantitative use of the samplers. Depending on the DGT configuration used ( HLB or MAX), accuracies better than 30% were demonstrated in laboratory for pH from 3 to 8 and ionic strengths from 10(-2) to 1 M. Combined with the effective binding capacities of samplers (>= 9 mu g for each pesticide) and limits of quantification of the method (<= 13 ng. L-1 using Q-TOF detector) monitoring of numerous aquatic systems can be expected. Except for ioxynil, accurate quantifications were demonstrated in laboratory using a spiked natural water for HLB-DGT whereas MAX-DGT did not give satisfactory results. A further in situ validation was performed in two rivers and showed identical detection frequency between HLB-DGT and POCIS of anionic pesticides ( bentazon and mesotrione) whereas calculated concentrations, although within the same order of magnitude, could differ (<70%). HLB-DGT could therefore constitute an interesting alternative to other passive samplers for the monitoring of several anionic pesticides in aquatic systems but more work is required for quantification of molecules from hydroxybenzonitrile chemical group ( ioxynil). (C) 2017 Elsevier B. V. All rights reserved.


英文关键词Anionic pesticides Herbicides Passive sampling Diffusive Gradients in Thin films Water analysis
类型Article
语种英语
国家France
收录类别SCI-E
WOS记录号WOS:000398435500001
WOS关键词CHEMICAL INTEGRATIVE SAMPLER ; POLAR ORGANIC-COMPOUNDS ; IN-SITU CALIBRATION ; BOUNDARY-LAYER ; POLYETHERSULFONE MEMBRANES ; AQUATIC ENVIRONMENTS ; MASS-SPECTROMETRY ; TITANIUM-DIOXIDE ; DEPLOYMENT TIME ; NATURAL-WATERS
WOS类目Chemistry, Analytical
WOS研究方向Chemistry
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/197280
作者单位Univ Limoges, Res Grp Water Soil & Environm GRESE, 123 Ave Albert Thomas, F-87060 Limoges, France
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GB/T 7714
Guibal, Robin,Buzier, Remy,Charriau, Adeline,et al. Passive sampling of anionic pesticides using the Diffusive Gradients in Thin films technique (DGT)[J],2017,966:1-10.
APA Guibal, Robin,Buzier, Remy,Charriau, Adeline,Lissalde, Sophie,&Guibaud, Gilles.(2017).Passive sampling of anionic pesticides using the Diffusive Gradients in Thin films technique (DGT).ANALYTICA CHIMICA ACTA,966,1-10.
MLA Guibal, Robin,et al."Passive sampling of anionic pesticides using the Diffusive Gradients in Thin films technique (DGT)".ANALYTICA CHIMICA ACTA 966(2017):1-10.
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