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LEVELS OF MERCURY AND METHYLMERCURY IN FISH (PROCHILODUS MAGDALENAE ) FROM SWAMP AYAPEL ( COLOMBIA )
EP23948
Poster Title: LEVELS OF MERCURY AND METHYLMERCURY IN FISH (PROCHILODUS MAGDALENAE ) FROM SWAMP AYAPEL ( COLOMBIA )
Submitted on 07 Apr 2016
Author(s): Mauricio lora A, Edineldo Lans C.
Affiliations: Universidad de cordoba
This poster was presented at pittcon
Poster Views: 1,079
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Poster Information
Abstract: Determinig the levels of total mercury (T-Hg) and methylmercury (Me-Hg)in fish(prochilodus magdalenae) to establish the risk associated with their daily in take. Two samplings were carried out during the months August and Semptember 2014. 40 specimens depending of size and weight were selected and purchased to fishermen of region. The T-Hg was determinated with a direct mercury analizer (DMA) by thermal descomposition,amalgamation and atomic absortion TDA-AAS and Me-Hg by gas chromatography with electron capture detector (GC-ECD). The T-Hg concentrations are between 50.7 to 302.3 mg Kg-1 and Me-Hg between 40.28 to 243.29 mg Kg-1. The Me-Hg/T-Hg reasons range from 0.46 to 0.95 increasing this ratio based on the size and weight of the fish. The hazard index (HI) for children and adults are between 1.73 to 12.97 and 0.99 to 7.40 for T-Hg and Me-Hg respectively. The T-Hg concentrations of the analyzed samples did not exceed 500 mg kg-1 established by Colombian legislation in fish for human consumption.

There are significant differences between the concentration of T-Hg and Me-Hg in relation to the size and weight of the fish ( P<0.05). HI indicates that consumption of 0.148 kg of fish per day in the people of the region could increase the risk and susceptibility of poisoning these pollutans. The results indicate a high risk for human population specially children who are most vulnerable.
Summary: Assess the levels of total mercury and methylmercury in Bocachico (
Prochilodus Magdalenae ) from the Ayapel swamp , gas
chromatography with electron capture detector and direct mercury
analyzer (GC -ECD and DMA ), to assess the potential risk
associated health
References: 1. PNUMA/FO/OIEA.ReferenAce Methods for Marine Pollution
Studies . In: Determination of methylmercury in selected marine
organisms by gas chromatography. No.13 ed. monaco; 1987. p.
12.
2. US EPA Method 7473. Mercury in solids and solutions by thermal
decomposition, amalgamation, and atomic absorption
spectrophotometry. 1998.
3. Chalarca D, Mejia R., Aguirre J . Approach to the determination of
the impact of the wastewater domestic of the municipality of
Ayapel on the water quality of the
swamp. 2007;41–58.
4. WHO. Methylmercury. Environmental Health Criteria 101
Geneva: World Health Organization; 1990 p. 19.
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