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, ATK Hyne, RV Doble, P 2009-12-21T02:29:29Z 2007-03
dc.identifier.citation Environmental Toxicology and Chemistry, 2007, 26 (3), pp. 435 - 443
dc.identifier.issn 0730-7268
dc.identifier.other C1 en_US
dc.description.abstract Two types of solid-phase materials, a styrenedivinylbenzene copolymer sorbent (embedded in a SDB-XC Empore™ disk) and a styrenedivinylbenzene copolymer sorbent modified with sulfonic acid functional groups (embedded in a SDB-RPS Empore disk), were compared as a receiving phase in a passive sampling device for monitoring polar pesticides. The SDB-XC Empore disk was selected for further evaluation, overlayed 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 herbicides (dicamba, (2,4-dichlorophenoxy)acetic acid [2,4-D], (4-chloro-2-methylphenoxy)acetic acid [MCPA], and triclopyr) with log octanol/water partition 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 polysulfone membrane. Using the device with a SDB-XC Empore disk covered with a polyethersulfone membrane, linear uptake of simazine, atrazine, diuron, clomazone, and metolachlor was observed for up to 21 d, and daily sampling rates of the herbicides from water in a laboratory flow-through system were determined. The uptake rate of each nonionized herbicide by the Empore disk-based passive sampler was linearly proportional to its 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 passive sampler after approximately 12 d of exposure. The Empore disk-based passive sampler displayed isotropic kinetics, with a release half-life for triclopyr of approximately 6 d. © 2007 SETAC.
dc.language eng
dc.relation.isbasedon 10.1897/06-401R.1
dc.title Calibration of a passive sampling device for time-integrated sampling of hydrophilic herbicides in aquatic environments
dc.type Journal Article
dc.parent Environmental Toxicology and Chemistry
dc.journal.volume 3
dc.journal.volume 26
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 0399 Other Chemical Sciences
dc.personcode 100467
dc.personcode 010494
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.location.activity ISI:000244241600007
dc.description.keywords passive samplers, herbicides, hydrophilic, empore disk en_US
dc.description.keywords passive samplers, herbicides, hydrophilic, empore disk
dc.description.keywords Water
dc.description.keywords Herbicides
dc.description.keywords Water Pollutants, Chemical
dc.description.keywords Calibration
dc.description.keywords Environmental Monitoring
dc.description.keywords Ecosystem
dc.description.keywords Static Electricity
dc.description.keywords Equipment Design
dc.description.keywords Empore disk
dc.description.keywords Herbicides
dc.description.keywords Hydrophilic
dc.description.keywords Passive samplers
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Faculty of Science/School of Chemistry and Forensic Science
pubs.organisational-group /University of Technology Sydney/Strength - Forensic Science

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