Matches in SemOpenAlex for { <https://semopenalex.org/work/W2044897970> ?p ?o ?g. }
Showing items 1 to 93 of
93
with 100 items per page.
- W2044897970 endingPage "68" @default.
- W2044897970 startingPage "53" @default.
- W2044897970 abstract "The technique of diffusion gradients in thin films (DGT) is designed to measure in situ labile trace metals; in a DGT device, the metal species are trapped in a resin gel comprising a Chelex resin in its Na-form after their diffusion across a diffusion layer comprising a polyacrylamide hydrogel. We deployed DGT and dialysis samplers (peepers) in the water column of the oligotrophic and acidic Lake Tantaré, Que. Canada. Contrary to expectation, concentrations of Cd and Ni measured by DGT in lake water were consistently higher than those measured by in situ dialysis. We show that co-diffusion of other ions through the diffusion layer, not taken into account explicitly in the original DGT theory, explains our field observations. When the DGT devices are deployed in a water of low major cation concentrations (∑[cations]≤2×10−4M), a steep negative concentration gradient of Na+ across the diffusive layer as well as small positive concentration gradients of the other cations develop. The result is an increase in the effective diffusion coefficients of cations entering the DGT sampler and a decrease in the diffusion coefficient of Na+ leaving the DGT device to fulfill electroneutrality. Non-steady-state conditions during the deployment time of the DGT devices make the prediction of these effects impracticable. We suggest that DGT devices, as presently designed, are not useful for measuring trace metal species in lakes of low cation concentrations. Such lakes are numerous in northern North America and in Scandinavia. Electrical effects on the diffusion coefficients were not observed in other studies using DGT samplers deployed in surface waters with major cation concentrations higher than 2×10−4 M." @default.
- W2044897970 created "2016-06-24" @default.
- W2044897970 creator A5011482290 @default.
- W2044897970 creator A5061437660 @default.
- W2044897970 creator A5077159360 @default.
- W2044897970 date "2000-08-01" @default.
- W2044897970 modified "2023-10-16" @default.
- W2044897970 title "In situ measurement of trace metals in lakewater using the dialysis and DGT techniques" @default.
- W2044897970 cites W1964983294 @default.
- W2044897970 cites W1967136904 @default.
- W2044897970 cites W1979066843 @default.
- W2044897970 cites W1981165843 @default.
- W2044897970 cites W1985596459 @default.
- W2044897970 cites W2009557896 @default.
- W2044897970 cites W2033031210 @default.
- W2044897970 cites W2044233272 @default.
- W2044897970 cites W2048517951 @default.
- W2044897970 cites W2051219340 @default.
- W2044897970 cites W2055099803 @default.
- W2044897970 cites W2064646406 @default.
- W2044897970 cites W2064928400 @default.
- W2044897970 cites W2065748070 @default.
- W2044897970 cites W2071484754 @default.
- W2044897970 cites W2082639827 @default.
- W2044897970 cites W2084148113 @default.
- W2044897970 cites W2088646473 @default.
- W2044897970 cites W2089547845 @default.
- W2044897970 cites W2100445513 @default.
- W2044897970 cites W2106802719 @default.
- W2044897970 cites W2122417830 @default.
- W2044897970 cites W2156064449 @default.
- W2044897970 cites W2164992411 @default.
- W2044897970 cites W2226111462 @default.
- W2044897970 doi "https://doi.org/10.1016/s0003-2670(00)00946-6" @default.
- W2044897970 hasPublicationYear "2000" @default.
- W2044897970 type Work @default.
- W2044897970 sameAs 2044897970 @default.
- W2044897970 citedByCount "109" @default.
- W2044897970 countsByYear W20448979702012 @default.
- W2044897970 countsByYear W20448979702013 @default.
- W2044897970 countsByYear W20448979702014 @default.
- W2044897970 countsByYear W20448979702015 @default.
- W2044897970 countsByYear W20448979702016 @default.
- W2044897970 countsByYear W20448979702017 @default.
- W2044897970 countsByYear W20448979702018 @default.
- W2044897970 countsByYear W20448979702019 @default.
- W2044897970 countsByYear W20448979702020 @default.
- W2044897970 countsByYear W20448979702021 @default.
- W2044897970 countsByYear W20448979702022 @default.
- W2044897970 countsByYear W20448979702023 @default.
- W2044897970 crossrefType "journal-article" @default.
- W2044897970 hasAuthorship W2044897970A5011482290 @default.
- W2044897970 hasAuthorship W2044897970A5061437660 @default.
- W2044897970 hasAuthorship W2044897970A5077159360 @default.
- W2044897970 hasConcept C107872376 @default.
- W2044897970 hasConcept C113196181 @default.
- W2044897970 hasConcept C121332964 @default.
- W2044897970 hasConcept C178790620 @default.
- W2044897970 hasConcept C185592680 @default.
- W2044897970 hasConcept C2780232896 @default.
- W2044897970 hasConcept C544153396 @default.
- W2044897970 hasConcept C69357855 @default.
- W2044897970 hasConcept C97355855 @default.
- W2044897970 hasConceptScore W2044897970C107872376 @default.
- W2044897970 hasConceptScore W2044897970C113196181 @default.
- W2044897970 hasConceptScore W2044897970C121332964 @default.
- W2044897970 hasConceptScore W2044897970C178790620 @default.
- W2044897970 hasConceptScore W2044897970C185592680 @default.
- W2044897970 hasConceptScore W2044897970C2780232896 @default.
- W2044897970 hasConceptScore W2044897970C544153396 @default.
- W2044897970 hasConceptScore W2044897970C69357855 @default.
- W2044897970 hasConceptScore W2044897970C97355855 @default.
- W2044897970 hasIssue "1" @default.
- W2044897970 hasLocation W20448979701 @default.
- W2044897970 hasOpenAccess W2044897970 @default.
- W2044897970 hasPrimaryLocation W20448979701 @default.
- W2044897970 hasRelatedWork W2029366016 @default.
- W2044897970 hasRelatedWork W2044855689 @default.
- W2044897970 hasRelatedWork W2045520711 @default.
- W2044897970 hasRelatedWork W2803002290 @default.
- W2044897970 hasRelatedWork W3012022416 @default.
- W2044897970 hasRelatedWork W3081025346 @default.
- W2044897970 hasRelatedWork W4225284477 @default.
- W2044897970 hasRelatedWork W4313897520 @default.
- W2044897970 hasRelatedWork W2107832600 @default.
- W2044897970 hasRelatedWork W2741609155 @default.
- W2044897970 hasVolume "418" @default.
- W2044897970 isParatext "false" @default.
- W2044897970 isRetracted "false" @default.
- W2044897970 magId "2044897970" @default.
- W2044897970 workType "article" @default.