PMID: 11605610Oct 19, 2001Paper

Methylmercury and total mercury in estuarine organisms from Rio de Janeiro, Brazil

Environmental Science and Pollution Research International
Helena Amaral KehrigO Malm

Abstract

Guanabara Bay (GB), located in the Rio de Janeiro State, is still a productive estuary on the south-eastern Brazilian coast. It is an ecosystem heavily impacted by organic matter, oil and a number of other toxic compounds, including Hg. The present study aimed to comparatively evaluate the aquatic total mercury (THg) and MeHg contamination, and the ratios of MeHg to THg (% MeHg), in 3 species of marine organisms, Micropogonias furnieri-carnivorous fish (N = 81), Mugil spp.--detritivorous fish (N = 20) and Perna perna--filter-feeding bivalves (N = 190), which are widely consumed by the population. A total of 291 specimens were collected at the bay in different periods between 1988 and 1998. THg concentrations were determined by cold vapour AAS with stannous chloride as a reducing agent. MeHg was extracted by dithizone-benzene and measured by GC-ECD. Analytical quality was checked through certified standards. All organisms presented both low THg and MeHg concentrations and they were below the maximum limit of 1,000 micrograms Hg.kg-1 wet wt. as established for human intake of predatory fish by the new Brazilian legislation. Carnivorous fish showed higher THg and MeHg concentrations, and also % MeHg in muscle tissues, than organis...Continue Reading

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Citations

Nov 2, 2004·Analytical and Bioanalytical Chemistry·Jacek NamieśnikAndrzej Wasik
Aug 30, 2008·Environmental Science and Pollution Research International·Helena do A KehrigIsabel Moreira
Mar 18, 2009·Environmental Science and Pollution Research International·Monica Ferreira CostaOlaf Malm
Jun 22, 2012·Environmental Science and Pollution Research International·Tércia G SeixasHelena A Kehrig
Dec 12, 2002·Marine Pollution Bulletin·H A KehrigO Malm
Jul 25, 2009·International Journal of Environmental Health Research·Jesus Olivero-VerbelNivis Torres-Fuentes
Feb 9, 2012·American Journal of Industrial Medicine·Daniele BotaroOlaf Malm
Feb 12, 2008·Environmental Pollution·Helena do A KehrigOlaf Malm
Apr 11, 2015·Marine Pollution Bulletin·Jailson Fulgencio de MouraSalvatore Siciliano
Feb 11, 2015·Bulletin of Environmental Contamination and Toxicology·M S FerreiraE T Mársico
Mar 14, 2014·Development and Psychopathology·Cecilia Martinez-TorteyaMaria Muzik
Mar 23, 2011·International Psychogeriatrics·Leann Kimberly LappFlorian Ferreri
Apr 22, 2008·Development and Psychopathology·Helen Z MacDonaldDeborah A Frank
May 8, 2014·Biological Trace Element Research·Gabriel Gustinelli Arantes de CarvalhoJosé Roberto Ferreira
Mar 1, 2017·Environmental Monitoring and Assessment·E V RamasamyMahesh Mohan
Mar 3, 2007·Journal of Environmental Quality·Andréa Cristina TomazelliMilena Horvat
Mar 27, 2018·Biological Trace Element Research·Dung Quang LeKotaro Shirai
Dec 20, 2020·Marine Pollution Bulletin·Yin Fui SiauShirai Kotaro
Oct 30, 2020·Environmental Science and Pollution Research International·Luana Barbosa SeixasAlejandra Filippo Gonzalez Neves Dos Santos

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