Calibration of a passive sampling device for time-integrated sampling of hydrophilic herbicides in aquatic environments.

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Show simple item record Tran, Thi Kieu en_US Hyne, Ross en_US Doble, Philip en_US 2009-12-21T02:29:29Z 2009-12-21T02:29:29Z 2007 en_US
dc.identifier 2006008434 en_US
dc.identifier.citation Tran Thi Kieu, Hyne Ross, and Doble Philip 2007, 'Calibration of a passive sampling device for time-integrated sampling of hydrophilic herbicides in aquatic environments.', SETAC Press, vol. 26, no. 3, pp. 435-443. en_US
dc.identifier.issn 0730-7268 en_US
dc.identifier.other C1 en_US
dc.description.abstract two types of solid-phase materials, a styrenedivinylbenzene copolumer sorbent (embedded in a SDB-XC Empore disk) and a styrenedivinylbenzene copolymer sorbent modified with sulfonic acid functional groups (embeddedin a SCB-RPS Empore disk) were compared as a receiving phase in a passive sampling device for monitoring polar pesticied. The SDB-XC Empore disk was selected for further evaluation, pverlayed with either a polysulfone or a polyethersulfone diffusion membrane. The target herbicides included five nonionized herbicides (simazine, atrazine, diuron, clomazone and metolachlor) and four phenoxy acid herbicideds (diacamba, 92,4-dichlorophenoxy) acetic acid [2,4-D], (4-chloro-2-methylphenoxy)acetic acid [MCPA} and triclopyr) with log octanol/water partitian coefficient (log Kow) values of less than three in water. Uptake of these herbicides generally was higher into a device constructed of a SDB-XC Empore disk as a receiving phase covered with a polyethersulfone membrane compared to a similar device covered with a polysufone membrane.Using the device with a SDB-XC Empore disk covred with a polyethersulfone membrane,linear uptake of simazine, atrazine, diuron, clomazone and metoachlor was observed foruo tp 21 d, and daily sampling rates of the herbiccides from water in a laboratory flow-through system were setermined. Theuptake rate of each nonionized herbicide by the Empore disk-based passive sampler was linearly proportional to irs concentration in the water, and the sampling rate was independent of the water concentrations over the 21-d period. Uptake of the phenoxy acid herbicides (2,4-D, MCPA and triclopyr) obeyed first-order kinetics and rapidly reached equilibrium in the pasasive sampler after approximately 12d of exposure. The Empore disn-based passive sampler displayed isotropic kinetics, with a release half-life for triclopyr of approximately 6 d. en_US
dc.publisher SETAC Press en_US
dc.relation.isbasedon en_US
dc.title Calibration of a passive sampling device for time-integrated sampling of hydrophilic herbicides in aquatic environments. en_US
dc.parent Environmental Toxicology and Chemistry en_US
dc.journal.volume 26 en_US
dc.journal.number 3 en_US
dc.publocation Europe en_US
dc.identifier.startpage 435 en_US
dc.identifier.endpage 443 en_US SCI.Chemistry and Forensic Sciences en_US
dc.conference Verified OK en_US
dc.for 039900 en_US
dc.personcode 10090684 en_US
dc.personcode 100467 en_US
dc.personcode 010494 en_US
dc.percentage 100 en_US Other Chemical Sciences en_US
dc.classification.type FOR-08 en_US
dc.location.activity ISI:000244241600007 en_US
dc.description.keywords passive samplers, herbicides, hydrophilic, empore disk en_US
dc.staffid 010494 en_US

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