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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?
开心过好每一天
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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
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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
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jwdxbjzh

至尊木虫 (职业作家)

No problem.
jwd
4楼2012-04-02 21:40:16
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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。
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5楼2012-04-02 21:42:01
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