Determination of total arsenic and arsenic (III) in phosphate fertilizers and phosphate rocks by HG-AAS after multivariate optimization based on Box-Behnken design
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2009 |
| Outros Autores: | , , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Repositório Institucional da UFBA |
| Texto Completo: | http://www.repositorio.ufba.br/ri/handle/ri/6124 |
Resumo: | Trabalho completo: acesso restrito, p. 974–979 |
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Macedo, Samuel MarquesJesus, Raildo M. deGarcia, Karina S.Hatje, VanessaQueiroz, Antônio Fernando de SouzaFerreira, Sergio Luis CostaMacedo, Samuel MarquesJesus, Raildo M. deGarcia, Karina S.Hatje, VanessaQueiroz, Antônio Fernando de SouzaFerreira, Sergio Luis Costa2012-06-13T19:44:58Z20090039-9140http://www.repositorio.ufba.br/ri/handle/ri/6124v. 80, n. 2Trabalho completo: acesso restrito, p. 974–979In the present paper, a procedure for the determination of total arsenic and arsenic (III) in phosphate fertilizers and phosphate rocks by slurry sampling (SS) with hydride generation atomic absorption spectrometry (HG-AAS) is proposed. Arsenic (III) is determinated directly and total arsenic is determinated after reduction reaction. The procedure was optimized for the flow rate of NaBH4, NaBH4 and hydrochloric acid concentrations using a full two-level factorial and also a Box-Behnken design. Slurry preparation with hydrochloric acid in an ultrasonic bath allowed the determination of arsenic (III) with limits of detection and quantification of 0.1 and 0.3 μg L−1, respectively. The precision of results, expressed as relative standard deviation (RSD), was always lower than 3%. The accuracy of this method was confirmed by analysis of certified sediment reference materials, while the procedure also allows for calibration using aqueous external standards. This method (SS/HG-AAS) was used to determine total arsenic and arsenic (III) in two phosphate rock samples and two phosphate fertilizer samples. In these samples, total arsenic concentrations varied from 5.2 to 20.0 mg kg−1, while As (III) concentrations varied from 2.1 to 5.5 mg kg−1, in agreement with published values. All samples were also analyzed using acid digestion/HG-AAS. Both, a paired t-test and a linear regression model demonstrated no significant difference (95% CL) between the results obtained using these two sample preparation procedures.Submitted by Bruna Lessa (lessbruna@gmail.com) on 2012-06-13T19:44:58Z No. of bitstreams: 1 (66)1-s2.0-S0039914009006766-main.pdf: 351909 bytes, checksum: e6de0c39fa4002b8e7b5a4b79feda1a7 (MD5)Made available in DSpace on 2012-06-13T19:44:58Z (GMT). No. of bitstreams: 1 (66)1-s2.0-S0039914009006766-main.pdf: 351909 bytes, checksum: e6de0c39fa4002b8e7b5a4b79feda1a7 (MD5) Previous issue date: 2009-12-15Elsevierhttp://dx.doi.org/10.1016/j.talanta.2009.08.025reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAMultivariate optimizationSlurry samplingPhosphate rocksPhosphate fertilizersArsenicHydride generationAtomic absorption spectrometryDetermination of total arsenic and arsenic (III) in phosphate fertilizers and phosphate rocks by HG-AAS after multivariate optimization based on Box-Behnken designTalantainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01enginfo:eu-repo/semantics/openAccessORIGINAL(66)1-s2.0-S0039914009006766-main.pdf(66)1-s2.0-S0039914009006766-main.pdfapplication/pdf351909https://repositorio.ufba.br/bitstream/ri/6124/1/%2866%291-s2.0-S0039914009006766-main.pdfe6de0c39fa4002b8e7b5a4b79feda1a7MD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/6124/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXT(66)1-s2.0-S0039914009006766-main.pdf.txt(66)1-s2.0-S0039914009006766-main.pdf.txtExtracted texttext/plain27745https://repositorio.ufba.br/bitstream/ri/6124/3/%2866%291-s2.0-S0039914009006766-main.pdf.txt76b34e0f17e021ea31d7e75f0ee66187MD53ri/61242022-10-17 23:37:21.014oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-10-18T02:37:21Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false |
| dc.title.pt_BR.fl_str_mv |
Determination of total arsenic and arsenic (III) in phosphate fertilizers and phosphate rocks by HG-AAS after multivariate optimization based on Box-Behnken design |
| dc.title.alternative.pt_BR.fl_str_mv |
Talanta |
| title |
Determination of total arsenic and arsenic (III) in phosphate fertilizers and phosphate rocks by HG-AAS after multivariate optimization based on Box-Behnken design |
| spellingShingle |
Determination of total arsenic and arsenic (III) in phosphate fertilizers and phosphate rocks by HG-AAS after multivariate optimization based on Box-Behnken design Macedo, Samuel Marques Multivariate optimization Slurry sampling Phosphate rocks Phosphate fertilizers Arsenic Hydride generation Atomic absorption spectrometry |
| title_short |
Determination of total arsenic and arsenic (III) in phosphate fertilizers and phosphate rocks by HG-AAS after multivariate optimization based on Box-Behnken design |
| title_full |
Determination of total arsenic and arsenic (III) in phosphate fertilizers and phosphate rocks by HG-AAS after multivariate optimization based on Box-Behnken design |
| title_fullStr |
Determination of total arsenic and arsenic (III) in phosphate fertilizers and phosphate rocks by HG-AAS after multivariate optimization based on Box-Behnken design |
| title_full_unstemmed |
Determination of total arsenic and arsenic (III) in phosphate fertilizers and phosphate rocks by HG-AAS after multivariate optimization based on Box-Behnken design |
| title_sort |
Determination of total arsenic and arsenic (III) in phosphate fertilizers and phosphate rocks by HG-AAS after multivariate optimization based on Box-Behnken design |
| author |
Macedo, Samuel Marques |
| author_facet |
Macedo, Samuel Marques Jesus, Raildo M. de Garcia, Karina S. Hatje, Vanessa Queiroz, Antônio Fernando de Souza Ferreira, Sergio Luis Costa |
| author_role |
author |
| author2 |
Jesus, Raildo M. de Garcia, Karina S. Hatje, Vanessa Queiroz, Antônio Fernando de Souza Ferreira, Sergio Luis Costa |
| author2_role |
author author author author author |
| dc.contributor.author.fl_str_mv |
Macedo, Samuel Marques Jesus, Raildo M. de Garcia, Karina S. Hatje, Vanessa Queiroz, Antônio Fernando de Souza Ferreira, Sergio Luis Costa Macedo, Samuel Marques Jesus, Raildo M. de Garcia, Karina S. Hatje, Vanessa Queiroz, Antônio Fernando de Souza Ferreira, Sergio Luis Costa |
| dc.subject.por.fl_str_mv |
Multivariate optimization Slurry sampling Phosphate rocks Phosphate fertilizers Arsenic Hydride generation Atomic absorption spectrometry |
| topic |
Multivariate optimization Slurry sampling Phosphate rocks Phosphate fertilizers Arsenic Hydride generation Atomic absorption spectrometry |
| description |
Trabalho completo: acesso restrito, p. 974–979 |
| publishDate |
2009 |
| dc.date.issued.fl_str_mv |
2009 |
| dc.date.accessioned.fl_str_mv |
2012-06-13T19:44:58Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/article |
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article |
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publishedVersion |
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http://www.repositorio.ufba.br/ri/handle/ri/6124 |
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0039-9140 |
| dc.identifier.number.pt_BR.fl_str_mv |
v. 80, n. 2 |
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0039-9140 v. 80, n. 2 |
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http://www.repositorio.ufba.br/ri/handle/ri/6124 |
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eng |
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openAccess |
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Elsevier |
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Elsevier |
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http://dx.doi.org/10.1016/j.talanta.2009.08.025 |
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