Arsenic enrichment in shelf and coastal sediment of the Brazilian subtropics
作者： N. Mirlean , S. Medeanic , F.A. Garcia , M.P. Travassos , P. Baisch
DOI: 10.1016/J.CSR.2012.01.006
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摘要: Abstract High levels of As (i.e., above the nationally legislated threshold 70 mg kg −1 ) were found in shelf sediment Espirito Santo state Brazil. The elevated content this metalloid propagated to a depth approximately 1.5 m. adjacent beach sands and mangrove sediments also enriched As. variation along profiles was acompained by calcareous-material distribution, which reflects paleogeographical circumstances that promote local reef development during corresponding intervals sedimentation. Arsenic-rich calcareous bioclast materials migrate from surface horizon nearby sediment, thereby replacing part previously entered marine environment with eroded material continent littoral zone. segment Brazilian tropical studied clearly demonstrated enrichment is determined exposure Barreiras formation on coast reefs, are favorable sites for settling bodies biogenic carbonates.
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Zelinda M.A.N Leao, The coral reefs of Bahia: Morphology, distribution and the major environmental impacts Anais Da Academia Brasileira De Ciencias. ,vol. 68, pp. 439- 452 ,(1996)
Evgueni Shumilin, Federico Páez-osuna, Carlos Green-ruiz, Dmitry Sapozhnikov, Guadalupe D Rodrı́guez-meza, Lucio Godı́nez-orta, Arsenic, Antimony, Selenium and other trace elements in sediments of the La Paz Lagoon, Peninsula of Baja California, Mexico Marine Pollution Bulletin. ,vol. 42, pp. 174- 178 ,(2001) , 10.1016/S0025-326X(00)00123-5
GERALDO S. VILAS BÔAS, FLÁVIO J. SAMPAIO, ANTONIO M. S. PEREIRA, The Barreiras Group in the Northeastern coast of the State of Bahia, Brazil: depositional mechanisms and processes Anais Da Academia Brasileira De Ciencias. ,vol. 73, pp. 417- 427 ,(2001) , 10.1590/S0001-37652001000300010
Clemens Reimann, Jörg Matschullat, Manfred Birke, Reijo Salminen, Arsenic distribution in the environment: the effects of scale. Applied Geochemistry. ,vol. 24, pp. 1147- 1167 ,(2009) , 10.1016/J.APGEOCHEM.2009.03.013
Anders Widerlund, Johan Ingri, Early diagenesis of arsenic in sediments of the Kalix River estuary, northern Sweden Chemical Geology. ,vol. 125, pp. 185- 196 ,(1995) , 10.1016/0009-2541(95)00073-U
M.K. Reid, K.L. Spencer, Use of principal components analysis (PCA) on estuarine sediment datasets: The effect of data pre-treatment Environmental Pollution. ,vol. 157, pp. 2275- 2281 ,(2009) , 10.1016/J.ENVPOL.2009.03.033
Malcolm E. Cox, Micaela Preda, Trace Metal Distribution Within Marine and Estuarine Sediments of Western Moreton Bay, Queensland, Australia: Relation to Land Use and Setting Geographical Research. ,vol. 43, pp. 173- 193 ,(2005) , 10.1111/J.1745-5871.2005.00312.X
Miguel Caetano, Carlos Vale, Retention of arsenic and phosphorus in iron-rich concretions of Tagus salt marshes Marine Chemistry. ,vol. 79, pp. 261- 271 ,(2002) , 10.1016/S0304-4203(02)00068-3
K.A. Sullivan, R.C. Aller, Diagenetic cycling of arsenic in Amazon shelf sediments Geochimica et Cosmochimica Acta. ,vol. 60, pp. 1465- 1477 ,(1996) , 10.1016/0016-7037(96)00040-3
Matthew L. Pierce, Carleton B. Moore, Adsorption of arsenite and arsenate on amorphous iron hydroxide Water Research. ,vol. 16, pp. 1247- 1253 ,(1982) , 10.1016/0043-1354(82)90143-9