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紫外线的危害和预防 | 2011-7-17 7:46:00

波长1OO～400纳米的电磁波称为紫外线。

太阳是极强的紫外线辐射源，适量的紫外线对人体健康有益．但接触过量的紫外线会对机体产生危害，特别是对眼睛的损伤。

在生产环境中，凡是物体的温度达1200℃以上时，辐射光谱中即可出现紫外线。电焊、气焊、电炉炼钢等作业，以及使用弧光灯、水银灯、闪光灯、紫外线消毒灯等均可受到紫外线的辐射。

紫外线照射皮肤时，可引起血管扩张，出现红斑，过量照射可产生弥漫性红斑，并可形成小水泡和水肿，长期照射可使皮肤干燥、失去弹性和老化。紫外线与煤焦油、沥青、石蜡等同时作用皮肤时，可引起光感性皮炎。

紫外线照射眼睛时，可引起急性角膜炎，常因电弧光如电焊引起，故称为电光性眼炎。

预防紫外线的危害，应采用自动或半自动焊接。增大与辐射源的距离。电焊工及其助手必须配戴专用的防护面罩或眼镜及适宜的防护手套，不得有裸露的皮肤。电焊工操作时应使用移动屏幕围住作业区，以免其他工种的人员受到紫外线照射。电焊时产生的有害气体和烟尘，应采用局部排风措施加以排除。

By:章仁根 | 阅读全文 | 回复(13) | 引用通告 | 编辑

标签：紫外线人体的危害预防

Re:紫外线的危害和预防 | 2011-7-17 7:47:39

紫外线对人体有危害，预防措施要落实。

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原创 | 2016-9-6 17:10:26

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原创 | 2016-9-28 16:46:04

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原创 | 2016-9-30 11:22:30

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Re:在漫画中识别身边的违章 | 2016-10-9 5:06:53

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Re:在漫画中识别身边的违章 | 2016-10-12 20:49:25

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Re:在漫画中识别身边的违章 | 2016-10-13 18:18:13

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Re:在漫画中识别身边的违章 | 2016-10-15 21:06:38

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Re:在漫画中识别身边的违章 | 2016-10-20 23:20:12

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Re:在漫画中识别身边的违章 | 2016-10-22 4:02:47

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