![]() Workplace measurements were used to define recommendations for reducing the chemical risks in CRT screens recycling facilities and for promoting the design and development of "clean and safe" processes in emerging recycling channels.Īmbient concentration Cathode ray tubes Chemical risk Exposure assessment Recycling WEEE.Ĭopyright © 2015 Elsevier Ltd. The most harmful operations were identified, and preventive measures for reducing the chemical risk associated with screen recycling were proposed. Most color cathode-ray tubes incorporate three electron guns, each one producing a different stream of electrons. A cathode ray tube utilizes a cathode and anode to create a beam of electrons, which are negatively charged subatomic particles that were discovered through the experimentation with cathode. Always get a hand moving larger units their weight and size make them dangerous to handle alone. The maximum levels of airborne pollutants in static samples were 39.0mg/m(3), 848.2μg/m(3), 698.4μg/m(3), 549.3μg/m(3) and 3437.9μg/m(3) for inhalable dust, barium, cadmium, lead and yttrium. When storing Cathode Ray Tube monitors, never rest the monitor down or have the monitor pressing against hard or sharp objects. Particulate exposure levels were measured using a gravimetric method and metals were analysed by plasma emission spectrometry. An electron tube in which a beam of electrons can be focused to a small cross section and varied in position and intensity on a display. The phosphors spark, or emit light, when impacted by the cathode ray. The ray can be detected by painting a material known as phosphors onto the far end of the tube beyond the anode. Exposure to these harmful substances was assessed in nine workshops where CRT screens are treated. The tubes are called cathode ray tubes because the particle beam or 'cathode ray' originates at the cathode. CRTs contain toxic materials such as lead, cadmium, barium, and fluorescent powders which can be released if recycling of CRTs is not appropriate. Cathode Ray Tubes (CRTs) from used television and computer screens represent one of the main sources of e-waste. ![]() The Waste Electrical and Electronic Equipment (WEEE) or e-waste recycling sector has grown considerably in the last fifteen years due to the ever shorter life cycles of consumables and an increasingly restrictive policy context. ![]()
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