COMPARATIVE EVALUATION OF METHODS FOR QUANTIFICATION OF MERCURY AT TRACE LEVEL IN AQUATIC BIOTA SAMPLES AS A BIO-INDICATOR
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2022-01-01
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Abstract
This study presented detailed evaluation of analytical characteristics of four advanced methods for total mercury quantification in aquatic biota samples. The method comparison as a validation strategy to ensure reliable and comparable results according to the ISO 17025 was presented. An analytical performance of the advanced mercury analyzer was compared with isotope dilution mass spectrometric measurements. Certified reference materials for mussel, oyster and scallop tissue were used during methods evaluation. The methods were then applied to unknown samples, such as Gammarus and Sea Bass samples. The highest values obtained for total mercury content in these samples was below maximum permissible limits: (0.222 ± 0.030) and (0.724 ± 0.022) mg kg-1. This comparative study could be of interest to laboratories for environmental monitoring or quality control of fishery products, as well as to other industries