Determination of Total Sulfur in Agricultural Samples by High-Resolution Continuum Source Flame Molecular Absorption Spectrometry

Página do item simplificado
dc.contributor.authorVirgilio, Alex [UNESP]
dc.contributor.authorRaposo, Jorge L. [UNESP]
dc.contributor.authorCardoso, Arnaldo Alves [UNESP]
dc.contributor.authorNobrega, Joaquim A.
dc.contributor.authorGomes Neto, José Anchieta [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2014-05-20T15:33:16Z
dc.date.available2014-05-20T15:33:16Z
dc.date.issued2011-03-23
dc.description.abstractThe usefulness of molecular absorption was investigated for the determination of total sulfur (S) in agricultural samples by high-resolution continuum source flame molecular absorption spectrometry. The lines for CS at 257.595, 257.958, and 258.056 nm and for SH at 323.658, 324.064, and 327.990 nm were evaluated. Figures of merit, such as linear dynamic range, sensitivity, linear correlation, characteristic concentration, limit of detection, and precision, were established. For selected CS lines, wavelength-integrated absorbance equivalent to 3 pixels, analytical curves in the 100-2500 mg L-1 (257.595 nm), 250-2000 mg L-1 (257.958 nm), and 250-5000 mg L-1 (258.056 nm) ranges with a linear correlation coefficient better than 0.9980 were obtained. Results were in agreement at a 95% confidence level (paired t test) with those obtained by gravimetry. Recoveries of S in fungicide and fertilizer samples were within the 84-109% range, and the relative standard deviation (n = 12) was typically < 5%.en
dc.description.affiliationSão Paulo State Univ UNESP, Inst Chem, Dept Analyt Chem, BR-14801970 São Paulo, Brazil
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), Dept Chem, BR-13560970 São Paulo, Brazil
dc.description.affiliationUnespSão Paulo State Univ UNESP, Inst Chem, Dept Analyt Chem, BR-14801970 São Paulo, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent2197-2201
dc.identifierhttp://dx.doi.org/10.1021/jf104296d
dc.identifier.citationJournal of Agricultural and Food Chemistry. Washington: Amer Chemical Soc, v. 59, n. 6, p. 2197-2201, 2011.
dc.identifier.doi10.1021/jf104296d
dc.identifier.issn0021-8561
dc.identifier.lattes9165109840414837
dc.identifier.lattes8708735699846578
dc.identifier.urihttp://hdl.handle.net/11449/41946
dc.identifier.wosWOS:000288401800010
dc.language.isoeng
dc.publisherAmer Chemical Soc
dc.relation.ispartofJournal of Agricultural and Food Chemistry
dc.relation.ispartofjcr3.412
dc.relation.ispartofsjr1,269
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectTotal sulfuren
dc.subjectfungicideen
dc.subjectfertilizeren
dc.subjectflame molecular absorption spectrometryen
dc.subjecthigh-resolution continuum source atomic absorption spectrometryen
dc.titleDetermination of Total Sulfur in Agricultural Samples by High-Resolution Continuum Source Flame Molecular Absorption Spectrometryen
dc.typeArtigo
dcterms.licensehttp://pubs.acs.org/page/policy/nih/index.html
dcterms.rightsHolderAmer Chemical Soc
unesp.author.lattes9165109840414837[3]
unesp.author.lattes8708735699846578
unesp.author.orcid0000-0003-2046-995X[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

Arquivos

Licença do Pacote
Agora exibindo 1 - 2 de 2
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Artigos - Química Analítica - IQ