¥ 价格面议
¥ 价格面议
¥ 价格面议
¥ 价格面议
易卖工控网(www.ymgk.com)提供”IC697CPU782 GE 特价销售”,产品详情:品牌/厂家:其他品牌、型号:IC697CPU782 GE、成色:全新、货期:期货 7天内发货、保修:365天,更多产品详情就上易卖工控网。
铅(Pb)
⑴理化性质:灰白色质软的金属。密度为11.3 g/cm3。
⑵对人体的危害:铅主要危害神经系统、造血系统、消化系统和肝、肾等器官。铅能抑制血红蛋白的合成代谢过程,还能直接作用于成熟红细胞。进入血液循环的铅能迅速分布到骨骼、肝、肾、脑等器官,体内大部分铅储存于骨骼中。中毒早期常感乏力、肢体轻度酸痛,口内有金属味和流涎多。继之表现:①有神经衰弱症候群、周围神经炎,重症患者可出现精神障碍等中毒性脑炎;②食欲不振、恶心、呕吐、便秘、腹绞痛,有的出现中毒性肝炎、肝坏死;③引起铅中毒性贫血;④重病例对肾脏有损害,可出现蛋白尿。
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