Keywords
fish
hair
cold vapor atomic absorption spectrometry
How to Cite
Abstract
The cold vapor atomic absorption spectrometry (CVAAS) is one of the most useful analytical technique for mercury and methylmercury determinations in biological materials due to several advantagens such as operation facility, fast analytical response, good sensitivity and low cost. This study also shows the results obtained by our laboratory in the World-Wide Intercomparison Exercise for the Determination of Trace Elements and Methylmercury in Tuna Fish Flesh Homogenate (IAEA-436), during the period of October 2004 and July 2005. The precision and accuracy of the method for total mercury and MeHg determinations were verified by means of the reference material analyses. The results obtained showed good precision and accuracy with relative standard deviation ranged from 2.2 to 10 % and relative error from 0.4 to 12% for MeHg and relative standard deviation ranged from 2.6 to 11.7 % and relative error from 0.9 to 3.1% for Hg. The method presented has been shown to be suitable for determination of background levels of these contaminants in fish and hair samples and can be used in studies related to the health effects of mercury and its species in man.
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