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2Â¥2016-09-03 08:19:24
celan
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ר¼Ò¾Ñé: +1122 - ACI: 1
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- ½ð±Ò: 32834.1
- É¢½ð: 1085
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- Ìû×Ó: 5190
- ÔÚÏß: 942.5Сʱ
- ³æºÅ: 174901
- ×¢²á: 2006-01-23
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3Â¥2016-09-05 15:16:45
BTS·Àµ¯
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- ³æºÅ: 4772992
- ×¢²á: 2016-06-14
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4Â¥2016-09-06 11:02:39
celan
ר¼Ò¹ËÎÊ (ÖªÃû×÷¼Ò)
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ר¼Ò¾Ñé: +1122 - ACI: 1
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5Â¥2016-09-06 16:01:53
6Â¥2016-11-17 16:08:46
7Â¥2016-11-17 16:15:11
celan
ר¼Ò¹ËÎÊ (ÖªÃû×÷¼Ò)
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ר¼Ò¾Ñé: +1122 - ACI: 1
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- ½ð±Ò: 32834.1
- É¢½ð: 1085
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- ×¢²á: 2006-01-23
- ÐÔ±ð: GG
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8Â¥2016-11-18 15:17:43
celan
ר¼Ò¹ËÎÊ (ÖªÃû×÷¼Ò)
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ר¼Ò¾Ñé: +1122 - ACI: 1
- Ó¦Öú: 1069 (²©ºó)
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- ½ð±Ò: 32834.1
- É¢½ð: 1085
- ºì»¨: 223
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- ÔÚÏß: 942.5Сʱ
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- ÐÔ±ð: GG
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9Â¥2016-11-18 15:34:27
celan
ר¼Ò¹ËÎÊ (ÖªÃû×÷¼Ò)
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ר¼Ò¾Ñé: +1122 - ACI: 1
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- ½ð±Ò: 32834.1
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- ºì»¨: 223
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- ÐÔ±ð: GG
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Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
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ÏÂÃæÊǹØÓÚqNMR¼ò½é£¬ÈçÐèÒªÎÒ¸øÄúÈ«ÎÄ¡£ Performance and advantages of qNMR measurements Quantitative NMR shows many advantages over other analytical techniques with regard to quantifi - cation or purity determination of organic substances. The most outstanding attribute of qNMR is that it is a relative primary method: the signal intensity is in direct proportionality with the number of protons contributing to the resonance. The structures of the chemical substances are therefore irrelevant. In addition, no significant empirical factors or unknown biases contribute to the ratio of signals. The signal ratio of two diff erent protons can thereforebe measured with tremendous precision and the only signifi - cant contribution to the measurement uncertainty is the integration of the signals. In other words, the direct response of a qNMR experiment is of the greatest accuracy. |
10Â¥2016-11-18 15:42:03













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