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- Chemcatcher abstract "Chemcatcher® is a passive sampling device currently being used throughout the world to measure time-weighted average (TWA) concentrations of organic and heavy metal pollutants in water. The Chemcatcher® concept was developed by Professors Richard Greenwood and Graham Mills at the University of Portsmouth, together with colleagues from Chalmers University of Technology, Sweden. The device is patented in a number of countries and the name is a registered trademark in the United Kingdom.The sampler comprises a low-cost, three component, water-tight PTFE body into which the appropriate 47 mm 3M Empore™ receiving phase disk (e.g. C18, styrene-divinylbenzene, chelating resin) is inserted depending on the class of pollutants being measured. The disk can be covered with a thin diffusion limiting membrane (e.g. low-density polyethylene, polyethersulphone) depending on the application the device is being used for. The sampler can be deployed in the field for extended periods of time ranging from days to weeks. The specific pollutants of interest are sequestered by the samplers and these are retained on the receiving phase disk. After retrieval from the environment the pollutants are eluted from the disk and analysed in the laboratory using conventional instrumental methods. In order to obtain TWA concentrations the sampler must first be calibrated in the laboratory so as to ascertain the uptake rate (usually measured as the volume of water cleared per unit time i.e. L/h for the analyte) of the pollutant of interest. The Chemcatcher® has been used in a range of aquatic environments; however, most work to date has been in monitoring the TWA concentrations of priority and emerging pollutants surface waters.The use of passive sampling devices, such as the Chemcatcher®, and the polar organic chemical integrative sampler (POCIS), have a number of advantages over the use of spot or bottle sampling for monitoring pollutants in the aquatic environment. The latter technique gives only an instantaneous concentration of the pollutant as the specific time of sampling. Passive samplers, depending on their mode of use can give either the TWA or equilibrium concentration of the pollutant over the deployment period. The measurement of TWA concentrations give a better indication of the long-term environmental conditions and enables improved risk assessment. Such devices have potential roles in monitoring programmes such as those underpinning the European Union’s Water Framework Directive and Marine Strategy Framework Directive. An ISO standard concerning the use of passive samplers for the determination of priority pollutants in surface waters is available for end users of this technology.More information on the Chemcatcher® passive sampling device and ongoing research activities can be found at http://www.port.ac.uk/research/chemcatcher/".
- Chemcatcher wikiPageExternalLink aquaticenvironmentalchemistry.
- Chemcatcher wikiPageExternalLink chemcatcher.
- Chemcatcher wikiPageID "32711607".
- Chemcatcher wikiPageLength "11414".
- Chemcatcher wikiPageOutDegree "16".
- Chemcatcher wikiPageRevisionID "677480585".
- Chemcatcher wikiPageWikiLink 3M.
- Chemcatcher wikiPageWikiLink Category:Articles_created_via_the_Article_Wizard.
- Chemcatcher wikiPageWikiLink Category:Scientific_equipment.
- Chemcatcher wikiPageWikiLink Chalmers_University_of_Technology.
- Chemcatcher wikiPageWikiLink Chalmers_university_of_technology.
- Chemcatcher wikiPageWikiLink Chelating_resin.
- Chemcatcher wikiPageWikiLink Divinylbenzene.
- Chemcatcher wikiPageWikiLink Environmental_monitoring.
- Chemcatcher wikiPageWikiLink International_Organization_for_Standardization.
- Chemcatcher wikiPageWikiLink Low-density_polyethylene.
- Chemcatcher wikiPageWikiLink PTFE.
- Chemcatcher wikiPageWikiLink Polar_organic_chemical_integrative_sampler.
- Chemcatcher wikiPageWikiLink Polysulfone.
- Chemcatcher wikiPageWikiLink Polytetrafluoroethylene.
- Chemcatcher wikiPageWikiLink Reversed-phase_chromatography.
- Chemcatcher wikiPageWikiLink United_Kingdom.
- Chemcatcher wikiPageWikiLink University_of_Portsmouth.
- Chemcatcher wikiPageWikiLink Water_Framework_Directive.
- Chemcatcher wikiPageWikiLinkText "Chemcatcher".
- Chemcatcher hasPhotoCollection Chemcatcher.
- Chemcatcher wikiPageUsesTemplate Template:Reflist.
- Chemcatcher subject Category:Articles_created_via_the_Article_Wizard.
- Chemcatcher subject Category:Scientific_equipment.
- Chemcatcher hypernym Device.
- Chemcatcher type Device.
- Chemcatcher comment "Chemcatcher® is a passive sampling device currently being used throughout the world to measure time-weighted average (TWA) concentrations of organic and heavy metal pollutants in water. The Chemcatcher® concept was developed by Professors Richard Greenwood and Graham Mills at the University of Portsmouth, together with colleagues from Chalmers University of Technology, Sweden.".
- Chemcatcher label "Chemcatcher".
- Chemcatcher sameAs m.0h3swvq.
- Chemcatcher sameAs Q5090352.
- Chemcatcher sameAs Q5090352.
- Chemcatcher wasDerivedFrom Chemcatcher?oldid=677480585.
- Chemcatcher isPrimaryTopicOf Chemcatcher.