天气预报 > 其他 > 薄层色谱法中展开剂如何选择
薄层色谱法中展开剂如何选择
更新时间: 2020-07-11 00:00:00  

薄层色谱法中展开剂需结合从疏水到亲水性的有机RT序列表选择,根据活性物质的疏水性,两性,亲水性选择合适的流动相选择;展开剂流动相要根据对分离的物质具有一定的溶解度选择;展开剂的极性应根据比分离的物质的极性略小选择;展开剂和吸附剂要考虑具有一定的亲和力选择;展开剂根据极性不同,展开剂极性,石油醚极性小于乙酸乙酯,乙酸乙酯极性小于乙醇。

关键词: 展开 如何 选择

薄层色谱法中展开剂如何选择相关经验

天气预报

最新推荐

页面:/news/view-2312541/ | 耗时:0.9367 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=2312541 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2312541 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2312541 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1129153,1096837,1131989,834146,350402,2294703,1079952,1086095,664593,1697299,1074204,203070,1051677,1638454,1887321,1889286,3405049,1319131,266793,2973878,2014734,1761957,1370685,1692826,1050395,2055035,2929962,3277060,3395108,2022537) ORDER BY field (ArticleID,1129153,1096837,1131989,834146,350402,2294703,1079952,1086095,664593,1697299,1074204,203070,1051677,1638454,1887321,1889286,3405049,1319131,266793,2973878,2014734,1761957,1370685,1692826,1050395,2055035,2929962,3277060,3395108,2022537)