24小时热门版块排行榜    

Znn3bq.jpeg
查看: 853  |  回复: 4
本帖产生 1 个 翻译EPI ,点击这里进行查看

dingfang0707

金虫 (正式写手)

[求助] 浓度怎么翻译

最近看了一篇文章,原文如下:
Fatty acid methyl esters were prepared by incubation with
acidified methanol. Briefly, lipids isolated by SPE or silica
from TLC plates were mixed with toluene (1.0ml) by
vortex mixing. Methanol containing 20 ml H2SO4/l
(2.0 ml) was added, mixed briefly and incubated at 50℃
for 18 h. The reaction mixture was cooled and neutralised
with a solution (2.0 ml) containing a mixture of KHCO3
(0.25 M) and K2CO3 (0.5 M). Fatty acid methyl esters were
isolated by addition of hexane (2.0 ml), separation of
organic and aqueous phases by centrifugation at 1125 g for
10 min at 14℃ and collection of the hexane layer. Samples
were transferred to GC autosampler vials, dried under N2
and dissolved in dry hexane.
请问其中的20 ml H2SO4/ l (2 ml) 如何理解啊?

» 猜你喜欢

开心过好每一天
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

jwdxbjzh

至尊木虫 (职业作家)

【答案】应助回帖

★ ★ ★ ★ ★
dingfang0707: 金币+2, 翻译EPI+1, ★★★很有帮助, very useful, thanks 2012-04-02 21:35:49
dingfang0707: 金币+3, ★★★很有帮助 2012-04-03 08:48:39
每升含20ml硫酸的甲醇2ml. 即:每升甲醇中添加20ml硫酸,然后取这种溶液2ml.
jwd
2楼2012-04-02 21:15:44
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

jwdxbjzh

至尊木虫 (职业作家)

引用回帖:
2楼: Originally posted by jwdxbjzh at 2012-04-02 21:15:44:
每升含20ml硫酸的甲醇2ml. 即:每升甲醇中添加20ml硫酸,然后取这种溶液2ml.

You're welcome.
jwd
3楼2012-04-02 21:39:32
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

jwdxbjzh

至尊木虫 (职业作家)

No problem.
jwd
4楼2012-04-02 21:40:16
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

dingfang0707

金虫 (正式写手)

引用回帖:
4楼: Originally posted by jwdxbjzh at 2012-04-02 21:40:16:
No problem.

我当时歪着脑袋看了很久都没弄清楚,呵呵,多谢你的帮助。
开心过好每一天
5楼2012-04-02 21:42:01
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 dingfang0707 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] 一志愿电子科技大学085600材料与化工 329分求调剂 +11 Naiko 2026-04-04 11/550 2026-04-08 14:00 by wutongshun
[考研] 265求调剂 +19 小木虫085600 2026-04-06 21/1050 2026-04-08 10:38 by 逆水乘风
[考研] 326求调剂 +5 9ahye 2026-04-02 6/300 2026-04-07 21:37 by lijunpoly
[考研] 一志愿南科大生物学297分,求调剂推荐 +8 Y-yyusx 2026-04-06 9/450 2026-04-07 19:38 by biomichael
[考研] 材料调剂 +11 一样YWY 2026-04-07 11/550 2026-04-07 15:13 by shdgaomin
[考研] 287分求调剂 有专利国奖一志愿哈工大085406 +6 白易辰 2026-04-06 7/350 2026-04-06 22:46 by 875465
[考研] 269电子信息求调剂,可转专业 +5 独酌wl 2026-04-06 5/250 2026-04-06 17:23 by 土木硕士招生
[考研] 一志愿C9的化学工程(085602) 340分,感觉校内调剂无望,求调剂 +12 万事宜臻 2026-04-04 12/600 2026-04-06 07:46 by 无际的草原
[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] 求调剂到0856材料工程 +3 程9915 2026-04-05 3/150 2026-04-05 18:15 by 蓝云思雨
[考研] 085500机械专硕初试288求调剂 +3 GZJguo666- 2026-04-05 3/150 2026-04-05 18:06 by jkddd
[考研] 工科求调剂 +15 11ggg 2026-04-03 15/750 2026-04-05 16:24 by zzx2138
[考研] 考研生物学考A区211,初试322,科目生化和生物综合,求调剂 +6 。。。54 2026-04-03 6/300 2026-04-05 14:54 by JOKER0401
[考研] +5 雾与海 2026-04-02 6/300 2026-04-04 19:53 by 蓝云思雨
[考研] 材料295 +13 小英11 2026-04-03 14/700 2026-04-04 09:02 by 来看流星雨10
[考研] 372分材料与化工(085600)一志愿湖南大学求调剂 +3 蓝笺片 2026-04-03 4/200 2026-04-03 17:58 by Jimmyandyou
[考研] 考研调剂 +3 Draa 2026-04-03 3/150 2026-04-03 17:37 by hgwz7468
[考研] 274求调剂 +9 顺理成张 2026-04-03 10/500 2026-04-03 15:10 by 啊俊!
[考研] 312求调剂 +6 小小墨123 2026-04-02 7/350 2026-04-03 07:32 by jsw79
[考研] 求调剂 302分初试 0854 +5 伶可乐 2026-04-02 5/250 2026-04-02 17:53 by 笔落锦州
信息提示
请填处理意见