天气预报15天查询> 其他> 如何检测水质

如何检测水质

更新时间: 2020-09-16 00:00:00     

看,用透明度较高玻璃杯接满一杯水,对着光线看有无悬浮在水中的细微物质,静置三小时左右,如有沉淀物产生,说明水中悬浮杂质严重超标;闻,用玻璃杯距离水龙头接一杯水,用鼻子闻,如闻到稍微刺鼻的味道,说明水中余氯超标;观,用水泡茶,隔夜后观察茶水,如茶水变黑,说明水中含铁,锰严重超标;品,品尝白开水,如口感有涩涩感觉,说明水的硬度过高;查,检查家里热水器,开水壶,内壁如有结一层黄垢,说明水的硬度过高。

关键词: 如何 检测 水质

如有意见、反馈、侵权或投诉等情况,请联系:

电话:
邮箱:

我们将会在48小时内给与处理!

版权所有 Copyright ? 2009-2020 tianqiyubao3.com

页面:/news/view-2977927/ | 耗时:0.8514 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=2977927 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2977927 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2977927 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(399386,1067964,119457,111662,3333441,2496392,111688,107417,1098967,1125060,118106,116025,118293,118773,1057641,109027,1130874,1075967,113792,2003144,1054832,1096743,111971,115342,109341,1131669,3254138,1047827,190143,116234) ORDER BY field (ArticleID,399386,1067964,119457,111662,3333441,2496392,111688,107417,1098967,1125060,118106,116025,118293,118773,1057641,109027,1130874,1075967,113792,2003144,1054832,1096743,111971,115342,109341,1131669,3254138,1047827,190143,116234)