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guolianshun铜虫 (著名写手)
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UV spectra were taken on a Specord UV VIS spectrophotometer. GLC was carried out on a LKhM-8MD (model 5) chromatograph with column length 2 m, stationary phase was 15% carbowax- 20 M on chromaton N-AW-GMDS 0.16-0.20 nm, carrier gas was helium, 30 ml/min. At a column temperature of 130~ the retention time of n-dodecane (internal standard) was 4 min 15 sec and of (II) I0 min 51 sec. At a column temperature of 200~ the retention time of (I) was 12 min 42 sec and of internal standard was 7 min 20 sec. TLC was carried out on Silufol UV- 254 plates in the system hexane-ether (2:1). Visualization was with ninhydrin after treat- ment of plates with hydrogen chloride. The Rf of (II) was 0.26 and of ~-isocyanopropionic acid propyl ester was 0.52. Chromatography on Filtrak P No. 3 (DDR) in the solvent system tert-butanol--88% formic acid-water (14:3:3) was used for the quantitative determination of L-alanine. Visualization was with ninhydrin, the Rf of ~-alanine was 0.71. Densitometry was carried out with the aid of a Vitatron densitometer. |
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铁杆木虫 (职业作家)
- 翻译EPI: 3
- 应助: 70 (初中生)
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RXMCDM: 金币+1, 多谢应助！ 2014-03-14 11:01:33
guolianshun: 金币+10, 翻译EPI+1, ★★★很有帮助 2014-03-14 13:54:12
RXMCDM: 金币+1, 多谢应助！ 2014-03-14 11:01:33
guolianshun: 金币+10, 翻译EPI+1, ★★★很有帮助 2014-03-14 13:54:12
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这个貌似是一个物质的测定条件。我翻个大概吧，开始的那个柱子型号，你给你们分析的人看看就行了，我们没必要搞懂。 大致意思是：气液色谱在如下的柱子（LKhM-8MD (model 5) chromatograph 柱子型号with column length 2 m柱长, stationary phase 固定性组成was 15% carbowax-20 M on chromaton N-AW-GMDS 0.16-0.20 nm, carrier gas was helium载气是氦气, 30 ml/min.流速 ）中实现。柱温130度 n-dodecane (internal standard内部标准) was 4 min 15 sec 4分15秒and of (II) I0 min 51 sec；柱温200的时候，I的保留时间是12分42秒，内部标准是7分20秒 TLC测定方法：紫外254波长，展开剂：正己烷：石油醚=2：1，板子用氯化氢和茚三酮显色。二的rf值为0.26 isocyanopropionic acid propyl ester（你的物质） was 0.52（Rf值）。后面的和前面自己看看，差不多就理解了，吃饭去了。 |
2楼2014-03-14 10:58:48
