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  • Title: Improper waste disposal of silver-mercury amalgam.
    Author: de Souza JP, Nozawa SR, Honda RT.
    Journal: Bull Environ Contam Toxicol; 2012 May; 88(5):797-801. PubMed ID: 22395198.
    Abstract:
    The objective of this work was to estimate the quantity of mercury residue present in dental amalgam that is generated and discarded in the city of Manaus (Amazon-Brazil). For this purpose, the locations of amalgam usage (10 public and 31 private dental clinics), the method by which the residue is discarded (14 clinics improper disposal), and the analysis of total mercury in the sediment of the controlled landfill (2.68-3 μgHg/g), were described. It was concluded that: there are dental clinics in the city that discard mercury residue into the common waste disposal system, which contravenes health safety standards.
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