Amalgam (dentistry) disposal. Dental amalgam is the largest source of mercury received by U.S. treatment plants. The U.S. Environmental Protection Agency (EPA) promulgated an effluent guidelines regulation in 2017 which prohibits most dental practices from disposing dental amalgam waste down the drain. Most dental offices in the U.S. are required to use an amalgam separator in their drain system. The separator captures the waste material, which is then recycled. The European Commission has issued a Waste Directive that classifies amalgam waste as a hazardous waste. The waste should be separated from other waste by fitting amalgam separators in all dental practices. Mercury
ReAction! Chemistry in the Movies by the benevolent Dr. Jekyll on one hand and the evil Mr. Hyde on the other to describe how chemists and chemistry are portrayed in the movies. There are 10 chapters, the first five of which have dark chemical themes and the second five of which have bright chemical themes. The chapter titles are: According to several reviews, the book's strength is when it explores what might be the real chemicals that inspired the fictional compounds found in certain movies. ReAction! Chemistry in the Movies ReAction! Chemistry in the Movies (2009, ) is a nonfiction book about movies, chemistry, and