Distribution and isotopic composition of lead in bottom sediments from the hydrographic system of Belém, Pará (western margin of Guajará Bay and Carnapijó River)
This study first aimed to evaluate the effect of human activities on the distribution of lead within the estuarine system of Belém, Pará. This was achieved by studying the concentration and isotopic signature of Pb in bottom sediments from the western margin of Guajará Bay and from Carnapijó River,...
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Published in | Brazilian journal of geology Vol. 46; no. suppl 1; pp. 197 - 208 |
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Main Authors | , , , |
Format | Journal Article |
Language | English Portuguese |
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Sociedade Brasileira de Geologia
01.06.2016
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Abstract | This study first aimed to evaluate the effect of human activities on the distribution of lead within the estuarine system of Belém, Pará. This was achieved by studying the concentration and isotopic signature of Pb in bottom sediments from the western margin of Guajará Bay and from Carnapijó River, an area removed from the influence of the city of Belém. Secondly, the contribution of suspended matter in the transportation of anthropogenic Pb in Guajará Bay was evaluated. Third, the content and background isotopic signature of Pb in the hydrographic system of Belém was determined. Isotopic signatures of sediments from the western margin of Guajará Bay confirm an anthropogenic contribution of Pb throughout the entire bay. The Pb accumulation process has become more efficient over the last 10 years, and this can be attributed to the rapid population growth of Belém city. Sediments in Carnapijó River are not affected by human activities, and the average concentration values (Pb = 19.6 ± 3.7 mg kg-1) and isotopic signatures (206Pb/207Pb = 1.196 ± 0.004) confirm the background Pb values previously proposed for the river system in the Belém region. The isotopic signatures of suspended matter on the eastern (206Pb/207Pb = 1.188) and western (206Pb/207Pb = 1.174) margins of Guajará Bay show that suspended matter is an efficient Pb transportation mechanism of domestic and industrial wastewater from Belém to the western margin of the Bay due to tidal effects at the confluence with Guamá River.
RESUMO: Este trabalho teve como objetivos: (1) avaliar a extensão da ação antrópica sobre a distribuição do chumbo no sistema estuarino da região de Belém, Pará, por meio do estudo da concentração e assinatura isotópica de Pb em sedimentos de fundo da margem oeste da baía do Guajará e do rio Carnapijó, localizado em uma área mais afastada da influência da cidade de Belém; (2) avaliar a contribuição do material em suspensão como meio de transporte de Pb antropogênico na baía do Guajará; e (3) conferir os teores e assinatura isotópica de background de Pb no sistema hidrográfico de Belém. As assinaturas isotópicas dos sedimentos da margem oeste da baía do Guajará confirmam uma contribuição antropogênica para o Pb na escala de toda a baía. O processo de acumulação de Pb se tornou mais eficiente nos últimos 10 anos e deve estar ligado ao crescimento populacional acelerado da cidade de Belém. Os sedimentos do rio Carnapijó ainda não foram afetados pela ação antrópica e os valores médios de concentração (Pb = 19,6 ± 3,7 mg kg-1) e assinatura isotópica (206Pb/207Pb = 1,196 ± 0,004) confirmam os valores de background de Pb anteriormente propostos para o sistema hidrográfico da região de Belém. As assinaturas isotópicas do material em suspensão nas margens oriental (206Pb/207Pb = 1,188) e ocidental (206Pb/207Pb = 1,174) da baía do Guajará mostram que o material em suspensão é um mecanismo eficiente de transporte do chumbo proveniente dos efluentes domésticos e industriais da cidade de Belém para a margem oeste da baía; em razão dos efeitos de maré na confluência com o rio Guamá. |
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AbstractList | This study first aimed to evaluate the effect of human activities on the distribution of lead within the estuarine system of Belém, Pará. This was achieved by studying the concentration and isotopic signature of Pb in bottom sediments from the western margin of Guajará Bay and from Carnapijó River, an area removed from the influence of the city of Belém. Secondly, the contribution of suspended matter in the transportation of anthropogenic Pb in Guajará Bay was evaluated. Third, the content and background isotopic signature of Pb in the hydrographic system of Belém was determined. Isotopic signatures of sediments from the western margin of Guajará Bay confirm an anthropogenic contribution of Pb throughout the entire bay. The Pb accumulation process has become more efficient over the last 10 years, and this can be attributed to the rapid population growth of Belém city. Sediments in Carnapijó River are not affected by human activities, and the average concentration values (Pb = 19.6 ± 3.7 mg kg-1) and isotopic signatures (206Pb/207Pb = 1.196 ± 0.004) confirm the background Pb values previously proposed for the river system in the Belém region. The isotopic signatures of suspended matter on the eastern (206Pb/207Pb = 1.188) and western (206Pb/207Pb = 1.174) margins of Guajará Bay show that suspended matter is an efficient Pb transportation mechanism of domestic and industrial wastewater from Belém to the western margin of the Bay due to tidal effects at the confluence with Guamá River.
RESUMO: Este trabalho teve como objetivos: (1) avaliar a extensão da ação antrópica sobre a distribuição do chumbo no sistema estuarino da região de Belém, Pará, por meio do estudo da concentração e assinatura isotópica de Pb em sedimentos de fundo da margem oeste da baía do Guajará e do rio Carnapijó, localizado em uma área mais afastada da influência da cidade de Belém; (2) avaliar a contribuição do material em suspensão como meio de transporte de Pb antropogênico na baía do Guajará; e (3) conferir os teores e assinatura isotópica de background de Pb no sistema hidrográfico de Belém. As assinaturas isotópicas dos sedimentos da margem oeste da baía do Guajará confirmam uma contribuição antropogênica para o Pb na escala de toda a baía. O processo de acumulação de Pb se tornou mais eficiente nos últimos 10 anos e deve estar ligado ao crescimento populacional acelerado da cidade de Belém. Os sedimentos do rio Carnapijó ainda não foram afetados pela ação antrópica e os valores médios de concentração (Pb = 19,6 ± 3,7 mg kg-1) e assinatura isotópica (206Pb/207Pb = 1,196 ± 0,004) confirmam os valores de background de Pb anteriormente propostos para o sistema hidrográfico da região de Belém. As assinaturas isotópicas do material em suspensão nas margens oriental (206Pb/207Pb = 1,188) e ocidental (206Pb/207Pb = 1,174) da baía do Guajará mostram que o material em suspensão é um mecanismo eficiente de transporte do chumbo proveniente dos efluentes domésticos e industriais da cidade de Belém para a margem oeste da baía; em razão dos efeitos de maré na confluência com o rio Guamá. This study first aimed to evaluate the effect of human activities on the distribution of lead within the estuarine system of Belém, Pará. This was achieved by studying the concentration and isotopic signature of Pb in bottom sediments from the western margin of Guajará Bay and from Carnapijó River, an area removed from the influence of the city of Belém. Secondly, the contribution of suspended matter in the transportation of anthropogenic Pb in Guajará Bay was evaluated. Third, the content and background isotopic signature of Pb in the hydrographic system of Belém was determined. Isotopic signatures of sediments from the western margin of Guajará Bay confirm an anthropogenic contribution of Pb throughout the entire bay. The Pb accumulation process has become more efficient over the last 10 years, and this can be attributed to the rapid population growth of Belém city. Sediments in Carnapijó River are not affected by human activities, and the average concentration values (Pb = 19.6 ± 3.7 mg kg-1) and isotopic signatures (206Pb/207Pb = 1.196 ± 0.004) confirm the background Pb values previously proposed for the river system in the Belém region. The isotopic signatures of suspended matter on the eastern (206Pb/207Pb = 1.188) and western (206Pb/207Pb = 1.174) margins of Guajará Bay show that suspended matter is an efficient Pb transportation mechanism of domestic and industrial wastewater from Belém to the western margin of the Bay due to tidal effects at the confluence with Guamá River. |
Author | Carvalho, Jully Hellen dos Santos Oliveira, Elma Costa Lafon, Jean Michel Corrêa, José Augusto Martins |
AuthorAffiliation | Instituto Federal de Educação Ciência e Tecnologia do Maranhão Universidade Federal do Pará |
AuthorAffiliation_xml | – name: Instituto Federal de Educação Ciência e Tecnologia do Maranhão – name: Universidade Federal do Pará |
Author_xml | – sequence: 1 givenname: Elma Costa surname: Oliveira fullname: Oliveira, Elma Costa organization: Universidade Federal do Pará, Brazil – sequence: 2 givenname: Jean Michel surname: Lafon fullname: Lafon, Jean Michel organization: Universidade Federal do Pará, Brazil – sequence: 3 givenname: José Augusto Martins surname: Corrêa fullname: Corrêa, José Augusto Martins organization: Universidade Federal do Pará, Brazil – sequence: 4 givenname: Jully Hellen dos Santos surname: Carvalho fullname: Carvalho, Jully Hellen dos Santos organization: Universidade Federal do Pará, Brazil; Federal Institute of Maranhão, Brazil |
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CitedBy_id | crossref_primary_10_1016_j_marpolbul_2019_04_057 crossref_primary_10_1007_s11356_022_20960_1 crossref_primary_10_24857_rgsa_v18n6_102 |
Cites_doi | 10.1016/j.envpol.2010.02.020 10.1504/AFP.2010.031018 10.1016/j.apgeochem.2009.04.004 10.1016/j.scitotenv.2005.02.041 10.1590/S0100-40422012000200004 10.1016/j.csr.2008.09.007 10.1016/S0012-8252(03)00086-2 10.1007/s00128-010-0136-4 10.1016/j.envint.2007.10.005 10.1007/s002160100875 10.22456/1807-9806.43077 10.1016/S0016-7037(00)00436-1 10.1016/S0304-4203(02)00016-6 10.1016/0012-8252(92)90001-A 10.1016/j.epsl.2009.11.055 10.1016/j.scitotenv.2007.05.029 10.1016/j.envint.2011.02.007 10.1016/S1352-2310(01)00115-7 10.1016/S0895-9811(01)00008-6 10.1016/S0278-4343(98)00070-3 10.1016/j.envpol.2005.10.024 |
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DocumentTitleAlternate | Distribuição e composição isotópica do chumbo em sedimentos de fundo do sistema hidrográfico de Belém, Pará (margem oeste da Baía do Guajará e Rio Carnapijó) |
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Keywords | Sedimentos de fundo Sistema estuarino de Belém Lead isotopes Bottom sediments Isótopos de Pb Belém estuarine system |
Language | English Portuguese |
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Natural lead isotope variations in the atmosphere publication-title: Earth and Planetary Science Letters |
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Title | Distribution and isotopic composition of lead in bottom sediments from the hydrographic system of Belém, Pará (western margin of Guajará Bay and Carnapijó River) |
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