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This study evaluated the ability of a chairside filtration system to remove particulate-based mercury (Hg) from dental-unit wastewater. Prototypes of the chairside filtration system were designed and fabricated using reusable filter chambers with disposable filter elements. The system was installed in five dental operatories utilizing filter elements with nominal pore sizes of 50μm, 15μm, 1μm, 0.5μm,...
This study was undertaken to determine whether iodine used to control bacteria in dental unit waterlines could increase mercury concentrations in dental wastewater.The study was conducted in four parts. Part 1. Solutions containing iodine in concentrations ranging from zero (control) to 20mg/L were mixed with ground and sieved dental amalgam and then allowed to equilibrate by settling. Cold vapor...
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