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wangdandelia

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[½»Á÷] ESI-ToF MS ·½·¨·­Òë ÒÑÓÐ2È˲ÎÓë

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EPS have been analyzed in  negative-ion mode on a QqTOF system (Ultima, Waters). Probe: 3 kV, cone 50 V, Rf lens 25 V and collision: 10V, up to 25V for MS/MS. Samples heve been dissolved at a concentration of 2 mg.mL-1 in water/methanol 1:1 with 0.1 % ammonia. The injection has been carried out with a flow rate of 7 µL.min-1. The scan range has been established between m/z 500 and m/z 2500 in 2 sec with 0.2 sec interscan delay. The spectra have been deconvoluted using Max Ent 3.

NMR£º
NMR spectra have been recorded at 303 K, at 500 MHz (1H) and 125.75 MHz (13C) using a cryoprobe.
The spectra were layed out using MestResNova.
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yamei0926

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2Â¥2015-10-10 22:55:15
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wangdandelia

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2Â¥: Originally posted by yamei0926 at 2015-10-10 22:55:15
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3Â¥2015-10-11 21:04:27
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irvine2015

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archbishop: ½ð±Ò+2, ¸ÐлӦÖú¡£ 2015-10-16 08:29:23
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NMRÆ×ÓÃÀ䶳̽ÕëÔÚ303KϲâÊÔÑù±¾500Õ׺գ¨1H£©ºÍ125.75Õ׺գ¨13C£©¡£
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4Â¥2015-10-16 03:02:46
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wangdandelia

ľ³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
4Â¥: Originally posted by irvine2015 at 2015-10-16 03:02:46
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EPSÀûÓÃWatersµÄUltime Q-TOF ÔÚ¸ºÀë×Óģʽ½øÐÐÁË·ÖÎö¡£Ì½Í·Ñ¹£º3ǧ·ü£¬Ô²×¶Ñ¹:50 V£¬RF ¾µ: 25 V, MS/MSÅöײѹ£º10V£¬×î¸ß¿É´ï25V¡£ÑùÆ·ÒѾ­ÈܽâÔÚ2ºÁ¿Ë/ºÁÉýµÄÓÐ0.1£¥µÄ°±Ë®/¼×´¼ (1£º1)ÖС£ ...

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