GC-ECD Determination of Methylmercury in Sediment Samples Using a SPB-608 Capillary Column after Alkaline Digestion

Caricchia, A.M.; Minervini, Giovanni; Soldati, P.; Chiavarini, Salvatore; Ubaldi, Carla; Morabito, Roberto

doi:10.1006/mchj.1996.1357

Cited by 47 publications

(25 citation statements)

References 15 publications

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“…Methylmercury (MeHg) was determined in the form of methylmercury chloride by gas chromatography (Caricchia et al 1997;. Samples were prepared by acidic digestion and extraction to toluene .…”

Section: Methodsmentioning

confidence: 99%

Mercury and Methylmercury Concentrations in Muscle Tissue of Fish Caught in Major Rivers of the Czech Republic

Kružíková

Randák²,

Kenšová

et al. 2008

Acta Vet. Brno

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The aim of the study was to evaluate mercury contamination at twelve outlet sites of rivers in the Czech Republic (Labe, Ohře, Vltava, Berounka, Sázava, Otava, Lužnice, Svratka, Dyje, Morava and Odra). As an indicator, we used muscle tissue of the chub (Leuciscus cephalus) caught at selected sites in 2007. A total of 96 fish were examined. Total mercury was determined by atomic absorption spectrophotometry using the AMA 254 analyzer and methylmercury was determined by gas chromatography with electron-capture detection. Total mercury (THg) and methylmercury (MeHg) concentrations ranged 0.039-0.384 mg·kg -1 fresh weight and 0.033-0.362 mg·kg -1 fresh weight, respectively. Mercury bound in methylmercury (Hg Me ) made up on average about 82.2% of total mercury. The highest mercury concentrations were found in fish from Obříství, a site on Labe (THg 0.263 ± 0.086 mg·kg -1 ; MeHg 0.256 ± 0.084 mg·kg -1 ). Mercury concentrations in fish from rivers that cross the borders of the Czech Republic (Labe, Odra and Morava) were low. The Czech Republic therefore does not contribute significantly to river pollution outside its national borders. Hazard indices of the sites monitored were well below 1, and reached 1.365 only in Obříství on Labe for fisherman's family members (i.e. in the case of annual consumption of 10 kg fish). This indicates possible hazards involved in eating meat of fish caught in that location. Based on PTWI for methylmercury, the maximum amount of fish meat allowed for consumption per week was calculated. The site with the lowest value was Obříství on Labe (0.44 kg). The results of this study present a partial contribution to health risk assessment on the major rivers in Czech Republic.Leuciscus cephalus, methylmercury/mercury ratio, THg, MeHg, hazard index, PTWI

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Section: Methodsmentioning

confidence: 99%

Mercury and Methylmercury Concentrations in Muscle Tissue of Fish Caught in Major Rivers of the Czech Republic

Kružíková

Randák²,

Kenšová

et al. 2008

Acta Vet. Brno

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“…Methylmercury was determined in the form of CH 3 HgCl by gas chromatography (Caricchia et al 1997;. The sample preparation was based on acidic digestion and extraction with toluene .…”

Section: Methodsmentioning

confidence: 99%

Mercury and methylmercury in muscle tissue of chub from the Elbe River main tributaries

Kružíková¹,

Svobodová²,

Valentová³

et al. 2008

Czech J. Food Sci.

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The aim of the present study was to investigate the concentrations of total mercury and methylmercury in muscle of 55 chub (<I>Leuciscus cephalus</I>) from seven main tributaries (Orlice, Chrudimka, Cidlina, Jizera, Vltava, Ohře, Bílina) of the Elbe River and to evaluate the health risks of eating fish from the tributaries monitored. Mercury was determined by means of cold vapour atomic absorption spectrometry using AMA-254, methylmercury in the form of CH<sub>3</sub>HgCl by gas chromatography. The highest mean concentrations of total mercury and methylmercury were found in the Jizera (0.27 ± 0.19 mg/kg and 0.23 ± 0.15 mg/kg, respectively) and the lowest mean concentrations of total mercury and methylmercury were found in the chub from the Cidlina (0.07 ± 0.05 mg/kg and 0.06 ± 0.04 mg/kg, respectively). The average methylmercury-to-total mercury ratio was 83 ± 15%. The fish intake hazard indexes calculated for the individual tributaries monitored were between 0.01 and 0.03. The results of this study show that the Elbe River is not significantly affected by mercury contamination from its main tributaries

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“…The MeHg content was determined in the form of methylmercury chloride by gas chromatography (Caricchia et al 1997). Samples were prepared by acid digestion and extraction with toluene .…”

Section: Determination Of Thg and Mehgmentioning

confidence: 99%

Assessment of mercury contamination of the Svitava and Svratka rivers and muscle of chub (Leuciscus cephalus L.) in the urban agglomeration of Brno in the Czech Republic

et al. 2011

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This study focused on the total mercury and methylmercury content in the muscle of chub (Leuciscus cephalus L.), the total mercury in the river sediments and the evaluation of health risks associated with fish contamination. Chub were caught at seven localities on the Svratka and Svitava rivers in the agglomeration of Brno in 2008. The results were compared to those obtained from the same sites in 2007. Total mercury was determined by atomic absorption spectrophotometry using an AMA 245 analyzer, and methylmercury was determined by gas chromatography (using an electron-capture detector) after acid digestion and toluene extraction in chub muscle. The highest concentrations of total mercury and methylmercury (0.12 ± 0.14 and 0.07 ± 0.02 mg·kg -1 fresh weight, respectively) were found in Svratka before junction (south of Brno), whereas the lowest concentration of mercury and methylmercury in chub (0.06 ± 0.01 and 0.04 ± 0.01 mg·kg -1 ) was detected in Svitava before junction with the Svratka River. Total mercury in sediments ranged from 0.01 to 1.05 mg·kg -1 dry weight, the highest value was detected in the sediment from Rajhradice. The lowest content (0.01 mg·kg -1 ) was at Kníničky. Hazard indices calculated for the selected localities showed no health risk for either a standard consumer or a fishing family. Fish from the Svitava and Svratka rivers show very low mercury concentration and hazard index and their consumption poses no health risk from total mercury and methylmercury contamination.

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GC-ECD Determination of Methylmercury in Sediment Samples Using a SPB-608 Capillary Column after Alkaline Digestion

Cited by 47 publications

References 15 publications

Mercury and Methylmercury Concentrations in Muscle Tissue of Fish Caught in Major Rivers of the Czech Republic

Mercury and Methylmercury Concentrations in Muscle Tissue of Fish Caught in Major Rivers of the Czech Republic

Mercury and methylmercury in muscle tissue of chub from the Elbe River main tributaries

Assessment of mercury contamination of the Svitava and Svratka rivers and muscle of chub (Leuciscus cephalus L.) in the urban agglomeration of Brno in the Czech Republic

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