Determination of Labile Mercury in Impressions of Total Solids Suspended in Natural Waters by Direct Analysis by Thermal Decomposition Comparing via Cold Steam Atomic Fluorescence Spectrometry
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.21577/1984-6835.20200108 http://hdl.handle.net/11449/228886 |
Resumo: | This work presents the validation of an analytical method for determining the lip fraction of Hg in water bottles. One proposal was reduced in reducing the temperature of glass fiber glass filters (0.7 μm GF / F), so that there was no loss of Hg. After the digestion step with concentrated HNO3 (EPA 3051a), as HgL determinations were performed by the direct mercury analyst (DMA), confirm by the comparative method of steam vapor atomic fluorescence spectrometry (CV-AFS). A concentration of HgL applied by the DMA technique ranged from 0.044 to 0.145 ng mL-1, while CV-AFS varied from 0.002 to 0.138 ng mL-1. Regarding recovery, the results obtained for both methods were 113.6% and 107.0%, respectively. An analysis of the results showed that there was no statistically significant difference (p <0.05), showing good accuracy of the technical proposal. The evaluation of the displayed response surface, which measures the total content (TSS), increases, the HgL concentration also increases. ANOVA showed statistical significance when the independent variables were correlated with the content of the TSS (95% level). Thus, as the analyzes that determine the determination of HgL in the TSS of river water are possible via DMA, as long as the boundary conditions (temperature control and cleaning of glassware) are followed. |
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Determination of Labile Mercury in Impressions of Total Solids Suspended in Natural Waters by Direct Analysis by Thermal Decomposition Comparing via Cold Steam Atomic Fluorescence SpectrometryDeterminação de Mercúrio Lábil em Amostras de Sólidos Totais SuspensosemÁguasNaturaisporAnáliseDiretaporDecomposição TérmicacomparandoviaEspectrometriadeFluorescênciaAtômica de Vapor FrioAnalytical validationLabile mercurySuspended solidsThis work presents the validation of an analytical method for determining the lip fraction of Hg in water bottles. One proposal was reduced in reducing the temperature of glass fiber glass filters (0.7 μm GF / F), so that there was no loss of Hg. After the digestion step with concentrated HNO3 (EPA 3051a), as HgL determinations were performed by the direct mercury analyst (DMA), confirm by the comparative method of steam vapor atomic fluorescence spectrometry (CV-AFS). A concentration of HgL applied by the DMA technique ranged from 0.044 to 0.145 ng mL-1, while CV-AFS varied from 0.002 to 0.138 ng mL-1. Regarding recovery, the results obtained for both methods were 113.6% and 107.0%, respectively. An analysis of the results showed that there was no statistically significant difference (p <0.05), showing good accuracy of the technical proposal. The evaluation of the displayed response surface, which measures the total content (TSS), increases, the HgL concentration also increases. ANOVA showed statistical significance when the independent variables were correlated with the content of the TSS (95% level). Thus, as the analyzes that determine the determination of HgL in the TSS of river water are possible via DMA, as long as the boundary conditions (temperature control and cleaning of glassware) are followed.Universidade Federal do Amazonas Instituto de Ciências Exatas Programa de Pós Graduação em QuímicaInstituto Nacional de Pesquisas da AmazôniaCompanhia de Pesquisa de Recursos Minerais Serviço Geológico do BrasilUniversidade Estadual Paulista Centro de Estudos AmbientaisUniversidade Estadual Paulista Centro de Estudos AmbientaisPrograma de Pós Graduação em QuímicaInstituto Nacional de Pesquisas da AmazôniaServiço Geológico do BrasilUniversidade Estadual Paulista (UNESP)da Rocha, Siomara D.Torrezani, LarissaBolson, Marcos A.Junior, Ézio Sargentini [UNESP]da Silva, Raiza F. [UNESP]Menegário, Amauri A. [UNESP]2022-04-29T08:29:07Z2022-04-29T08:29:07Z2020-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article1398-1410http://dx.doi.org/10.21577/1984-6835.20200108Revista Virtual de Quimica, v. 12, n. 6, p. 1398-1410, 2020.1984-6835http://hdl.handle.net/11449/22888610.21577/1984-6835.202001082-s2.0-85099153258Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Virtual de Quimicainfo:eu-repo/semantics/openAccess2024-04-10T19:22:25Zoai:repositorio.unesp.br:11449/228886Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-04-10T19:22:25Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Determination of Labile Mercury in Impressions of Total Solids Suspended in Natural Waters by Direct Analysis by Thermal Decomposition Comparing via Cold Steam Atomic Fluorescence Spectrometry Determinação de Mercúrio Lábil em Amostras de Sólidos Totais SuspensosemÁguasNaturaisporAnáliseDiretaporDecomposição TérmicacomparandoviaEspectrometriadeFluorescênciaAtômica de Vapor Frio |
title |
Determination of Labile Mercury in Impressions of Total Solids Suspended in Natural Waters by Direct Analysis by Thermal Decomposition Comparing via Cold Steam Atomic Fluorescence Spectrometry |
spellingShingle |
Determination of Labile Mercury in Impressions of Total Solids Suspended in Natural Waters by Direct Analysis by Thermal Decomposition Comparing via Cold Steam Atomic Fluorescence Spectrometry da Rocha, Siomara D. Analytical validation Labile mercury Suspended solids |
title_short |
Determination of Labile Mercury in Impressions of Total Solids Suspended in Natural Waters by Direct Analysis by Thermal Decomposition Comparing via Cold Steam Atomic Fluorescence Spectrometry |
title_full |
Determination of Labile Mercury in Impressions of Total Solids Suspended in Natural Waters by Direct Analysis by Thermal Decomposition Comparing via Cold Steam Atomic Fluorescence Spectrometry |
title_fullStr |
Determination of Labile Mercury in Impressions of Total Solids Suspended in Natural Waters by Direct Analysis by Thermal Decomposition Comparing via Cold Steam Atomic Fluorescence Spectrometry |
title_full_unstemmed |
Determination of Labile Mercury in Impressions of Total Solids Suspended in Natural Waters by Direct Analysis by Thermal Decomposition Comparing via Cold Steam Atomic Fluorescence Spectrometry |
title_sort |
Determination of Labile Mercury in Impressions of Total Solids Suspended in Natural Waters by Direct Analysis by Thermal Decomposition Comparing via Cold Steam Atomic Fluorescence Spectrometry |
author |
da Rocha, Siomara D. |
author_facet |
da Rocha, Siomara D. Torrezani, Larissa Bolson, Marcos A. Junior, Ézio Sargentini [UNESP] da Silva, Raiza F. [UNESP] Menegário, Amauri A. [UNESP] |
author_role |
author |
author2 |
Torrezani, Larissa Bolson, Marcos A. Junior, Ézio Sargentini [UNESP] da Silva, Raiza F. [UNESP] Menegário, Amauri A. [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Programa de Pós Graduação em Química Instituto Nacional de Pesquisas da Amazônia Serviço Geológico do Brasil Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
da Rocha, Siomara D. Torrezani, Larissa Bolson, Marcos A. Junior, Ézio Sargentini [UNESP] da Silva, Raiza F. [UNESP] Menegário, Amauri A. [UNESP] |
dc.subject.por.fl_str_mv |
Analytical validation Labile mercury Suspended solids |
topic |
Analytical validation Labile mercury Suspended solids |
description |
This work presents the validation of an analytical method for determining the lip fraction of Hg in water bottles. One proposal was reduced in reducing the temperature of glass fiber glass filters (0.7 μm GF / F), so that there was no loss of Hg. After the digestion step with concentrated HNO3 (EPA 3051a), as HgL determinations were performed by the direct mercury analyst (DMA), confirm by the comparative method of steam vapor atomic fluorescence spectrometry (CV-AFS). A concentration of HgL applied by the DMA technique ranged from 0.044 to 0.145 ng mL-1, while CV-AFS varied from 0.002 to 0.138 ng mL-1. Regarding recovery, the results obtained for both methods were 113.6% and 107.0%, respectively. An analysis of the results showed that there was no statistically significant difference (p <0.05), showing good accuracy of the technical proposal. The evaluation of the displayed response surface, which measures the total content (TSS), increases, the HgL concentration also increases. ANOVA showed statistical significance when the independent variables were correlated with the content of the TSS (95% level). Thus, as the analyzes that determine the determination of HgL in the TSS of river water are possible via DMA, as long as the boundary conditions (temperature control and cleaning of glassware) are followed. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-11-01 2022-04-29T08:29:07Z 2022-04-29T08:29:07Z |
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://dx.doi.org/10.21577/1984-6835.20200108 Revista Virtual de Quimica, v. 12, n. 6, p. 1398-1410, 2020. 1984-6835 http://hdl.handle.net/11449/228886 10.21577/1984-6835.20200108 2-s2.0-85099153258 |
url |
http://dx.doi.org/10.21577/1984-6835.20200108 http://hdl.handle.net/11449/228886 |
identifier_str_mv |
Revista Virtual de Quimica, v. 12, n. 6, p. 1398-1410, 2020. 1984-6835 10.21577/1984-6835.20200108 2-s2.0-85099153258 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Revista Virtual de Quimica |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
1398-1410 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799964611979509760 |