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qwky2010

金虫 (著名写手)

[求助] 求一段翻译,英译中(化学专业涉及气相质谱方面)先谢谢了

The methylated products were hydrolyzed with 0.5 M HCl/aqueous 80% AcOH at 70 C for 0.5 h, followed by reduction and acetylation to obtain partially methylated alditol acetates (PMAAs).PMAAs were identified by their fragment ions in EI-MS and by their
relative retention times in GC. Their molar ratios were estimated from the peak areas of total ion chromatograms from GC–MS.
Relative molar ratios of [U–13C]PMAA from [U–13C]glucosyl residue and [U-12C]PMAA from [U-12C]glucosyl residue ([U–13C]PMAA/[U-12C]PMAA) were estimated from the peak areas of their characteristic fragment ions (m/z) detected
天道酬勤
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qwky2010

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引用回帖:
楼: Originally posted by liuss818 at 2012-02-28 21:40:21:
甲基化产物在70度下,在含有0.5mol/L的液相醋酸中水解0.5h,然后,通过还原和乙酰化
得到部分甲基化的糖醇乙酰化衍生物。将产物的碎片做 EI-MS分析,后在GC中测量它的相对保留时间,通过GC–MS测定总离子色谱图的 ...

你好,谢谢回复,我想确认下几个地方,0.5 M HCl/aqueous 80% AcOH是什么,还有reduction和 partially methylated alditol acetates 的准确专业意思,谢谢了
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4楼2012-02-28 22:55:14
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qwky2010

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没人应助,取消求助吧,请关贴谢谢
天道酬勤
2楼2012-02-28 21:15:32
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liuss818

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【答案】应助回帖

qwky2010(金币+10, 翻译EPI+1): ★有帮助 谢谢 2012-02-28 22:53:05
甲基化产物在70度下,在含有0.5mol/L的液相醋酸中水解0.5h,然后,通过还原和乙酰化
得到部分甲基化的糖醇乙酰化衍生物。将产物的碎片做 EI-MS分析,后在GC中测量它的相对保留时间,通过GC–MS测定总离子色谱图的峰面积比躲到他们的分子比。
3楼2012-02-28 21:40:21
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