24小时热门版块排行榜    

Znn3bq.jpeg
查看: 4315  |  回复: 101
【奖励】 本帖被评价94次,作者cat-liujiang增加金币 71.2
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

cat-liujiang

铁杆木虫 (正式写手)


[资源] 分享一篇讨论反相液相色谱流动相PH的综述

On the Effect of Organic Solvent Composition on the pH of Buffered HPLC Mobile Phases and the pK(a) of Analytes - A Review
A review about the analyte pK a and buffer pH variations in RP‐HPLC mobile phases with the changes in the organic modifier content (acetonitrile or methanol) is presented. A model to accurately predict the pH of particular mobile phases for several commonly used buffers (acetic, citric and phosphoric acid and ammonia systems) in acetonitrile‐water and methanol‐water mixtures is described. Linear relationships are also presented for several families of acid‐base compounds (aromatic and aliphatic carboxylic acids, phenols, amines and pyridines) to estimate pK a values of analytes in methanol‐water and acetonitrile‐water from their corresponding aqueous pK a. From both, the estimated pH of the mobile phase and the estimated pK a of acid‐base analytes, it is possible to predict their degree of ionization and, therefore, the analyte chromatographic retention.[ Last edited by cat-liujiang on 2011-8-4 at 16:35 ]
回复此楼

» 收录本帖的淘帖专辑推荐

万卷阁 科研★资料 天然药化 液相
仪器分析 有用 化学

» 猜你喜欢

» 本主题相关价值贴推荐,对您同样有帮助:

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

dandanxiong1983

金虫 (小有名气)


★★★★★ 五星级,优秀推荐

正相找这方面的资料,太好了,谢谢分享
36楼2012-08-16 16:46:09
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 102 个回答
简单回复
4449189043楼
2011-08-04 16:38   回复  
三星好评  顶一下,感谢分享!
2011-08-04 16:57   回复  
五星好评  顶一下,感谢分享!
lmlfeixue5楼
2011-08-06 10:43   回复  
五星好评  顶一下,感谢分享!
陈林霖6楼
2011-08-06 13:34   回复  
三星好评  顶一下,感谢分享!
cxgxb9楼
2011-10-01 00:37   回复  
三星好评  
bozi198811楼
2011-11-05 19:00   回复  
五星好评  顶一下,感谢分享!
2012-03-05 21:23   回复  
三星好评  顶一下,感谢分享!
罗小赛14楼
2012-03-06 22:28   回复  
五星好评  顶一下,感谢分享!
☆ 无星级 ★ 一星级 ★★★ 三星级 ★★★★★ 五星级
普通表情 高级回复 (可上传附件)
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 本科211 工科085400 280分求调剂 可跨专业 +8 LZH(等待调剂中 2026-04-10 8/400 2026-04-10 10:39 by xujun0624
[考研] 一志愿东北大学控制工程085406数二英二385,求调剂 +5 Ezra_Zhang 2026-04-09 5/250 2026-04-10 08:06 by 1753564080
[考研] 283求调剂,工科! +8 苏打水7777 2026-04-08 8/400 2026-04-09 20:50 by xujun0624
[考研] 材料专硕(0856) 339分求调剂 +9 哈哈哈鹅哈哈哈 2026-04-09 10/500 2026-04-09 20:01 by Orcid
[考研] 267求调剂 +5 再忙也要吃饭啊 2026-04-09 5/250 2026-04-09 18:47 by stone_128
[考研] 367求调剂 +10 hffQAQ 2026-04-09 10/500 2026-04-09 18:06 by lijunpoly
[考研] 材料307分求大佬组收留 +17 Hll胡 2026-04-07 17/850 2026-04-09 10:53 by liuhuiying09
[考研] 材料调剂 +14 一样YWY 2026-04-06 14/700 2026-04-08 23:00 by 猪会飞
[考研] 318求调剂 +13 ykyhsa 2026-04-05 15/750 2026-04-08 21:37 by wj165256
[考研] 化工学硕 285求调剂 +26 Wisjxn 2026-04-07 26/1300 2026-04-08 14:42 by screening
[考研] 283分求调剂 +14 试试看呗 2026-04-04 14/700 2026-04-08 07:03 by lijunpoly
[考研] 22408 一志愿双一流人工智能300分 四六级,数据分析国奖 +4 zzfeng123 2026-04-06 6/300 2026-04-07 21:02 by zzfeng123
[考研] 软工学硕299求调剂 +6 useryy 2026-04-07 6/300 2026-04-07 09:50 by vgtyfty
[考研] 085100建筑学 寻求跨专业调剂 一志愿南大294分 校级省级国家级奖项若干 踏实肯干 +3 1021075758 2026-04-06 4/200 2026-04-07 09:23 by 蓝云思雨
[考研] 一志愿9材料学硕297已过六级求调剂推荐 +11 adaie 2026-04-04 12/600 2026-04-05 19:04 by 蓝云思雨
[考研] 326求调剂 +3 顾若浮生 2026-04-05 3/150 2026-04-05 18:32 by 蓝云思雨
[考研] 298求调剂 +7 manman511 2026-04-05 7/350 2026-04-05 10:29 by 唐沐儿
[考研] 22408,264求调剂 +3 ywh729 2026-04-03 4/200 2026-04-04 11:04 by ywh729
[考研] 357求调剂 +13 1050389037 2026-04-03 13/650 2026-04-03 22:27 by 无际的草原
[考研] 求调剂 +3 usbdndj 2026-04-03 3/150 2026-04-03 14:10 by dxiaoxin
信息提示
请填处理意见