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Abstract
The use of several acid mixtures for digestion of marine biological materials with microwave-assisted heating was investigated. The mixtures of HNO3–H2SO4–H2O2and of HNO3–H2SO4–HCl were most effective after microwave digestion, resulting in complete decomposition of samples. Recoveries of added mercury to marine biological tissues were satisfactory, ranging from 91 to 108%. This indicated that no matrix interference or loss of volatile mercury occurred during the analysis. The mercury content of standard reference materials after microwave digestion corresponded closely to the certified values.
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