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放射性发光涂料已广泛地用于钟表和仪表工业中,它的发光原理为:以少量放射性物质作为持久性激发物质,使调配在一起的发光物质——硫化锌产生荧光。在我国已有近40年的使用历史,过去普遍采用放射性镭(~(226)Ra),因毒性大,防护困难,现已改用钜(~(147)Pm)或氚(~3H)。一、主要职业危害因素:可归纳为以下三方面。1.放射性危害。~(226)Ra衰变后可产生α射线及气体氡子体等,~(147)Pm和~3H可产生β射线。常因工作条件达不到防护要求或操作者人为的污染而沾污皮肤、工作服、工作台面、地面等;甚至形成放射性
Radioluminescent coatings have been widely used in the watch and instrumentation industry. Their luminescence principle is that a small amount of radioactive material is used as a persistent stimulus to cause the luminescent substance formulated together, zinc sulfide, to fluoresce. It has been used for nearly 40 years in our country. Radioactive radium (~ (226) Ra) has been widely used in the past. Because of its toxicity and difficulty in protection, it has been used in large quantities (~ 147 Pm) or tritium (~ 3H). First, the main occupational hazards: can be summarized into the following three aspects. Radioactive hazard ~ (226) Ra decay can produce α rays and gas radon progenies, etc., ~ (147) Pm and ~ 3H can produce β rays. Often due to the working conditions of less than the protection requirements or operator contamination of man-made stains on the skin, overalls, countertops, floors, etc .; and even the formation of radioactive