天气预报 > 其他 > 焊锡有没有毒
焊锡有没有毒
更新时间: 2020-08-16 00:00:00  

焊锡分两种,一种为有铅焊锡,一种为无铅焊锡。有铅焊锡与无铅焊锡均有毒的。

锡与铅的合金,即焊锡,具有金属良好的导电性,溶点低,长期以来用于焊接工艺。它的毒性主要来自铅。焊锡所产生的铅烟易导致铅中毒。铅是对神经系统有害的重金属元素。金属铅可能产生铅化合物,铅化合物是危险物质,铅会影响中枢神经系统及肾脏。

关键词: 焊锡 有毒

焊锡有没有毒相关经验

天气预报

最新推荐

页面:/news/view-1701945/ | 耗时:0.7790 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=1701945 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1701945 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1701945 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(2178313,1125654,1123629,1050455,1096354,235189,1122905,1071821,1866455,1052980,929056,601890,1129045,1088670,1103135,2873394,1129335,1067852,1128969,1117892,1450365,1131867,1329828,1130314,1068524,2789078,1066066,1130017,2124039,1133371) ORDER BY field (ArticleID,2178313,1125654,1123629,1050455,1096354,235189,1122905,1071821,1866455,1052980,929056,601890,1129045,1088670,1103135,2873394,1129335,1067852,1128969,1117892,1450365,1131867,1329828,1130314,1068524,2789078,1066066,1130017,2124039,1133371)