Single drop micro-extraction with O,O-diethyl dithiophosphate for the determination of lead by electrothermal atomic absorption spectrometry

Bibliographic Details
Main Author: Maltez, Heloísa França
Publication Date: 2008
Other Authors: Borges, Daniel L. G., Carasek, Eduardo, Welz, Bernhard, Curtius, Adilson José
Format: Article
Language: eng
Source: Repositório Institucional da UFBA
Download full: http://www.repositorio.ufba.br/ri/handle/ri/6426
Summary: Acesso restrito: Texto completo. p. 800-805.
id UFBA-2_29d45f9956c3b5112072b8efe6399c46
oai_identifier_str oai:repositorio.ufba.br:ri/6426
network_acronym_str UFBA-2
network_name_str Repositório Institucional da UFBA
repository_id_str 1932
spelling Maltez, Heloísa FrançaBorges, Daniel L. G.Carasek, EduardoWelz, BernhardCurtius, Adilson JoséMaltez, Heloísa FrançaBorges, Daniel L. G.Carasek, EduardoWelz, BernhardCurtius, Adilson José2012-07-13T15:15:46Z20080039-9140http://www.repositorio.ufba.br/ri/handle/ri/6426v. 74, n. 4Acesso restrito: Texto completo. p. 800-805.Lead was extracted as the O,O-diethyldithiophosphate (DDTP) complex from aqueous solution into a drop of CHCl3 immersed in the solution.Unlike previously reported procedures using single drop micro-extraction (SDME) for the extraction of inorganic analytes, the complexation reaction was conducted in the aqueous phase, as the ammonium salt of DDTP is soluble in water. The concentration of DDTP was optimized as 0.01% (m/v). Experimental parameters such as extraction time (7 min) and organic drop volume (3 L) were optimized and selected as a compromise between sensitivity and stability of the organic drop in the aqueous solution. The sensitivity with electrothermal atomic absorption spectrometry (ET AAS) was low, probably due to infiltration of the organic drop into the totally pyrolytic graphite platform. To overcome this problem, tungsten (400 g) was thermally deposited onto the platform surface. A short pyrolysis stage at 700 ◦C was included to reduce background absorption. Under these conditions, five certified reference materials with different characteristics were analyzed using calibration against aqueous standards submitted to the SDME procedure, resulting in good agreement between certified and found concentration values at a 95% confidencelevel. Two real water samples have also been analyzed, with recoveries ranging from 85 to 92% after enrichment with Pb. An enhancement factor of 52 allowed a detection limit of 0.2 gL−1 or 0.04 g g−1, demonstrating the high detection capability of the proposed procedure, with a relative standard deviation typically below 4%.Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-07-13T15:15:46Z No. of bitstreams: 1 __ac.els-cdn.com_S003991...3ac309156ed4875365388d5e3d746.pdf: 120165 bytes, checksum: 29eaccc83659dd35438bff9c5c46b82a (MD5)Made available in DSpace on 2012-07-13T15:15:46Z (GMT). No. of bitstreams: 1 __ac.els-cdn.com_S003991...3ac309156ed4875365388d5e3d746.pdf: 120165 bytes, checksum: 29eaccc83659dd35438bff9c5c46b82a (MD5) Previous issue date: 2008http://dx.doi.org/10.1016/j.talanta.2007.07.010reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBASingle drop micro-extractionDiethyl dithiophosphateLead determinationElectrothermal atomic absorption spectrometryChloroformTungsten-treated platformSingle drop micro-extraction with O,O-diethyl dithiophosphate for the determination of lead by electrothermal atomic absorption spectrometryTalantainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01enginfo:eu-repo/semantics/openAccessORIGINAL__ac.els-cdn.com_S003991...3ac309156ed4875365388d5e3d746.pdf__ac.els-cdn.com_S003991...3ac309156ed4875365388d5e3d746.pdfapplication/pdf120165https://repositorio.ufba.br/bitstream/ri/6426/1/__ac.els-cdn.com_S003991...3ac309156ed4875365388d5e3d746.pdf29eaccc83659dd35438bff9c5c46b82aMD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/6426/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXT__ac.els-cdn.com_S003991...3ac309156ed4875365388d5e3d746.pdf.txt__ac.els-cdn.com_S003991...3ac309156ed4875365388d5e3d746.pdf.txtExtracted texttext/plain27774https://repositorio.ufba.br/bitstream/ri/6426/3/__ac.els-cdn.com_S003991...3ac309156ed4875365388d5e3d746.pdf.txt9c0d8fd3f35b256d70cbd3e8fecb254cMD53ri/64262022-07-05 14:03:43.727oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestrepositorio@ufba.bropendoar:19322022-07-05T17:03:43Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Single drop micro-extraction with O,O-diethyl dithiophosphate for the determination of lead by electrothermal atomic absorption spectrometry
dc.title.alternative.pt_BR.fl_str_mv Talanta
title Single drop micro-extraction with O,O-diethyl dithiophosphate for the determination of lead by electrothermal atomic absorption spectrometry
spellingShingle Single drop micro-extraction with O,O-diethyl dithiophosphate for the determination of lead by electrothermal atomic absorption spectrometry
Maltez, Heloísa França
Single drop micro-extraction
Diethyl dithiophosphate
Lead determination
Electrothermal atomic absorption spectrometry
Chloroform
Tungsten-treated platform
title_short Single drop micro-extraction with O,O-diethyl dithiophosphate for the determination of lead by electrothermal atomic absorption spectrometry
title_full Single drop micro-extraction with O,O-diethyl dithiophosphate for the determination of lead by electrothermal atomic absorption spectrometry
title_fullStr Single drop micro-extraction with O,O-diethyl dithiophosphate for the determination of lead by electrothermal atomic absorption spectrometry
title_full_unstemmed Single drop micro-extraction with O,O-diethyl dithiophosphate for the determination of lead by electrothermal atomic absorption spectrometry
title_sort Single drop micro-extraction with O,O-diethyl dithiophosphate for the determination of lead by electrothermal atomic absorption spectrometry
author Maltez, Heloísa França
author_facet Maltez, Heloísa França
Borges, Daniel L. G.
Carasek, Eduardo
Welz, Bernhard
Curtius, Adilson José
author_role author
author2 Borges, Daniel L. G.
Carasek, Eduardo
Welz, Bernhard
Curtius, Adilson José
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Maltez, Heloísa França
Borges, Daniel L. G.
Carasek, Eduardo
Welz, Bernhard
Curtius, Adilson José
Maltez, Heloísa França
Borges, Daniel L. G.
Carasek, Eduardo
Welz, Bernhard
Curtius, Adilson José
dc.subject.por.fl_str_mv Single drop micro-extraction
Diethyl dithiophosphate
Lead determination
Electrothermal atomic absorption spectrometry
Chloroform
Tungsten-treated platform
topic Single drop micro-extraction
Diethyl dithiophosphate
Lead determination
Electrothermal atomic absorption spectrometry
Chloroform
Tungsten-treated platform
description Acesso restrito: Texto completo. p. 800-805.
publishDate 2008
dc.date.issued.fl_str_mv 2008
dc.date.accessioned.fl_str_mv 2012-07-13T15:15:46Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/6426
dc.identifier.issn.none.fl_str_mv 0039-9140
dc.identifier.number.pt_BR.fl_str_mv v. 74, n. 4
identifier_str_mv 0039-9140
v. 74, n. 4
url http://www.repositorio.ufba.br/ri/handle/ri/6426
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/j.talanta.2007.07.010
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
instacron:UFBA
instname_str Universidade Federal da Bahia (UFBA)
instacron_str UFBA
institution UFBA
reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
bitstream.url.fl_str_mv https://repositorio.ufba.br/bitstream/ri/6426/1/__ac.els-cdn.com_S003991...3ac309156ed4875365388d5e3d746.pdf
https://repositorio.ufba.br/bitstream/ri/6426/2/license.txt
https://repositorio.ufba.br/bitstream/ri/6426/3/__ac.els-cdn.com_S003991...3ac309156ed4875365388d5e3d746.pdf.txt
bitstream.checksum.fl_str_mv 29eaccc83659dd35438bff9c5c46b82a
1b89a9a0548218172d7c829f87a0eab9
9c0d8fd3f35b256d70cbd3e8fecb254c
bitstream.checksumAlgorithm.fl_str_mv MD5
MD5
MD5
repository.name.fl_str_mv Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)
repository.mail.fl_str_mv repositorio@ufba.br
_version_ 1828148813388316672

Similar Items