天气预报 > 教育 > 测甲醛的化学方法
测甲醛的化学方法
更新时间: 2021-01-20 18:40:11  

1、测甲醛使用气相法谱法。

2、空气中甲醛要酸性条件下吸附在涂有二硝基苯担体上,生成稳定的甲醛腙。用二硫化碳洗脱后,经OV色谱柱分离,用氢焰离子化检测器测定,以保留时间定性,峰高定量。

3、测定范围:若以0.1L/min流量采样20L时,测定范围为0.02-1mg/m3。

关键词: 甲醛 化学 方法

测甲醛的化学方法相关经验

天气预报

最新推荐

页面:/news/view-2031299/ | 耗时:0.7335 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=2031299 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2031299 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2031299 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(684491,796068,3515796,3147688,530865,400762,1092081,1040348,2117862,1085232,675185,421109,3300760,1118580,3490343,2976915,408894,1086862,1722223,3175458,1093402,609159,1172354,782155,1104739,1110321,1115011,647547,3302467,761577) ORDER BY field (ArticleID,684491,796068,3515796,3147688,530865,400762,1092081,1040348,2117862,1085232,675185,421109,3300760,1118580,3490343,2976915,408894,1086862,1722223,3175458,1093402,609159,1172354,782155,1104739,1110321,1115011,647547,3302467,761577)