24小时热门版块排行榜    

查看: 526  |  回复: 5

liuxus20030704

银虫 (小有名气)


[交流] 求助外文中的一个实验操作

For flavonoids (F) determination, skin extract and wine samples were diluted 100 times, with ethanol-hydrochloric acid solution and an absorbance spectrum in the range 230-700 nm was recorded. The F content was calculated according to the following formula:
F=E280*df*82.4
E280 = specific extinction coefficient at 280nm assessed with the graphic method (absorbance corresponding to the segment, parallel to the y-axis, starting from the peak maximum at 280 nm and finishing on the tangent joining the points of minimum at the left and at the right of the peak).

» 猜你喜欢

» 抢金币啦!回帖就可以得到:

查看全部散金贴

已阅   关注TA 给TA发消息 送TA红花 TA的回帖

liuxus20030704

银虫 (小有名气)


longwave(金币+1): 鼓励交流,欢迎常来科研版! 2012-02-29 18:59:29
在一篇文献中看到测试类黄酮的方法,请问the graphic method 中是如何得到E280 specific extinction coefficient ?不知道怎么画图和计算?急用,谢谢! 图片搞忘传了。
2楼2012-02-29 17:13:15
已阅   关注TA 给TA发消息 送TA红花 TA的回帖

liuxus20030704(金币+1):谢谢参与
tuobaohua(金币+1): 积极参与交流,欢迎常来科研版! 2012-02-29 20:54:23
3楼2012-02-29 19:37:22
已阅   关注TA 给TA发消息 送TA红花 TA的回帖
简单回复
2012-02-29 21:10  
liuxus20030704(金币+1):谢谢参与
祝福祝福
buyanru5楼
2012-05-28 20:52  
liuxus20030704(金币+1): 谢谢参与
neu2346楼
2012-05-28 21:42  
liuxus20030704(金币+1): 谢谢参与
相关版块跳转 我要订阅楼主 liuxus20030704 的主题更新
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 302求调剂 +4 小贾同学123 2026-03-15 8/400 2026-03-17 10:33 by 小贾同学123
[考研] 材料与化工304求B区调剂 +7 邱gl 2026-03-11 8/400 2026-03-17 09:36 by 努力学习赚彩礼
[考研] 一志愿,福州大学材料专硕339分求调剂 +3 木子momo青争 2026-03-15 3/150 2026-03-17 07:52 by laoshidan
[基金申请] 国自科面上基金字体 +6 iwuli 2026-03-12 7/350 2026-03-16 21:18 by sculhf
[考研] 286求调剂 +3 lemonzzn 2026-03-16 5/250 2026-03-16 20:43 by lemonzzn
[考研] 环境工程调剂 +6 大可digkids 2026-03-16 6/300 2026-03-16 17:16 by barlinike
[考研] 297求调剂 +4 学海漂泊 2026-03-13 4/200 2026-03-14 11:51 by 热情沙漠
[考研] 学硕285求调剂 +13 Wisjxn 2026-03-12 46/2300 2026-03-14 10:33 by JourneyLucky
[考研] 341求调剂 +4 番茄头--- 2026-03-10 4/200 2026-03-13 23:12 by JourneyLucky
[考研] 332求调剂 +3 zjy101327 2026-03-11 6/300 2026-03-13 22:48 by JourneyLucky
[考研] 求调剂(材料与化工327) +4 爱吃香菜啦 2026-03-11 4/200 2026-03-13 22:11 by JourneyLucky
[考研] 336求调剂 +6 Iuruoh 2026-03-11 6/300 2026-03-13 22:06 by JourneyLucky
[考研] 求材料调剂 085600英一数二总分302 前三科235 精通机器学习 一志愿哈工大 +4 林yaxin 2026-03-12 4/200 2026-03-13 22:04 by 星空星月
[考研] (081700)化学工程与技术-298分求调剂 +12 11啦啦啦 2026-03-11 35/1750 2026-03-13 21:25 by JourneyLucky
[硕博家园] 085600 260分求调剂 +3 天空还下雨么 2026-03-13 5/250 2026-03-13 18:46 by 天空还下雨么
[考研] 314求调剂 +7 无懈可击的巨人 2026-03-12 7/350 2026-03-13 15:40 by JourneyLucky
[考研] 290求调剂 +7 ADT 2026-03-12 7/350 2026-03-13 15:17 by JourneyLucky
[考研] 328化工专硕求调剂 +4 。,。,。,。i 2026-03-12 4/200 2026-03-13 14:44 by JourneyLucky
[考研] 277求调剂 +4 anchor17 2026-03-12 4/200 2026-03-13 11:15 by 白夜悠长
[考研] 420求调剂 +4 莫向外求11 2026-03-10 6/300 2026-03-12 14:41 by ruiyingmiao
信息提示
请填处理意见