Trace levels determination of ammonium by flow injection analysis using gas-diffusion and capacitively coupled contactless conductivity detection

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dc.contributor.authorBraz H.L.
dc.contributor.authorIto D.T.
dc.contributor.authorda Silva J.A.F.
dc.contributor.authordo Lago C.L.
dc.contributor.authorPedrotti J.J.
dc.date.accessioned2024-03-13T01:10:16Z
dc.date.available2024-03-13T01:10:16Z
dc.date.issued2011
dc.description.abstractA sensitive analytical method based on gas-diffusion flow injection system for ammonium ion determination at trace levels with capacitively coupled contactless conductivity detection (C4D) is described. The effects of the chemical composition of the acceptor stream, operating frequency of the conductivity detector, acceptor and donor flow rates, injected volume, and some potential interferents were evaluated. By injecting 100μL samples, the analytical method showed linear response for ammonium from 2.0 up to 100μmol L-1 and a limit of detection of 0.8μmol L-1 (14 ppb). At a flow rate of 0.10mL min-1 for the acceptor solution, an analytical throughput of 35 injections per hour was achieved. The new flow injection system was successfully applied for ammonium determination in rainwater from São Paulo city. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
dc.description.firstpage2594
dc.description.issuenumber11
dc.description.lastpage2600
dc.description.volume23
dc.identifier.doi10.1002/elan.201100317
dc.identifier.issn1040-0397
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/36932
dc.relation.ispartofElectroanalysis
dc.rightsAcesso Restrito
dc.subject.otherlanguageAmmonium determination
dc.subject.otherlanguageContactless conductivity detection
dc.subject.otherlanguageGas-diffusion
dc.subject.otherlanguageRainwater
dc.titleTrace levels determination of ammonium by flow injection analysis using gas-diffusion and capacitively coupled contactless conductivity detection
dc.typeArtigo
local.scopus.citations17
local.scopus.eid2-s2.0-80054985880
local.scopus.updated2024-05-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=80054985880&origin=inward
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