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铅是一种淡灰色的金属。它广泛存在于采矿、化工、冶炼、印刷、蓄电池等行业中。在此,仅就小型的电瓶(用于汽车发动)与印刷作业的铅危害作一简介。电瓶作业的极板与连接板的制作(熔铸)与焊接,印刷作业的铸字时均使铅的温度(均)达到300℃以上,所产生的铅烟,是对工人的主要危害,它通过呼吸道进入人体,从消化道食入的铅只有1/10被吸收,其余均以原形从粪便排出。铅一般不经皮肤进入人体。铅进入人体后初期主要分布于肝、肾、肺、脑、脾,以肝、肾含量最高。儿周后,便转入到骨骼系统形成不溶性的三盐基磷酸铅沉积下来,且稳定,并可长期贮存,但对骨骼系统不产生破坏作用。进入体内的铅,主要累及神经系统,造血消化、心血管系统及肾脏。因此,便会出现一系列以神经衰弱症侯群、胃肠功能障碍、贫血等为主的临
Lead is a light gray metal. It is widely found in mining, chemical, metallurgy, printing, batteries and other industries. Here, only a small battery (used for car launch) and printing operations lead hazard to make a brief introduction. Battery operation of the plate and connecting plate production (casting) and welding, printing operations are made when the lead temperature (all) reached 300 ℃ above, the lead smoke, is the main hazard to workers, it is through the respiratory tract Into the human body, only 1/10 of the lead ingested from the digestive tract is absorbed, and the rest is excreted in the same way as the excrement. Lead into the body without the general skin. Lead into the body after the initial distribution mainly in the liver, kidney, lung, brain, spleen, liver, kidney content was the highest. After a few weeks, they are transferred to the skeletal system to form insoluble tribasic lead phosphate deposits, which are stable and can be stored for long periods of time without damaging the skeletal system. Lead into the body, mainly involving the nervous system, hematopoietic digestion, cardiovascular system and kidneys. Therefore, there will be a series of neurasthenia syndrome, gastrointestinal dysfunction, anemia, etc. based