. dai xie gong cheng. botany. æå¾A C-5 y>â o C-1 â V-âA'â^ s.,^ 155 150 C-2 C-4 C-3 60 55 50 45 6/ppm 40 35 30 å¾éç¨[2-l3C]ä¹é ¸ä¸ºç¢³æºæ¶è§æµå°çè°·æ°¨é ¸å¤éè°±çº¿æ¨¡å¼ [æ¹èªWalshåKoshhand (1984)] C-2å¤çå³°æ6æ¡è°±çº¿ï¼å æ¬ç±G234å¼èµ·çä¸åé谱线ï¼æ¯æ¡çº¿ç强度为; 以åç±Gi234å¼èµ·çä¸åé谱线ï¼æ¯æ¡çº¿ç强度为ï¼å æ-¤ï¼Q/D = 2/3c lppm=10_6 强度ãZ被å®ä¹ä¸ºç»ä¹é µé ¸æ¯è·¯æå©ç¨å¼æ æª¬é ¸çæ¦çï¼æè ï¼ä¹é ¸é ¸æ¯è·¯ä¸-å¼æ æª¬é ¸çå© ç¨åæ°ï¼TCA循ç¯ä¸-ç转å平衡ï¼ãæ ¹æ®WalshåKoshland (1984)çç 究ï¼èå è°·æ°¨é ¸5 个碳åå-ä¸çç¸å¯¹å¯é度ä»C-1è³C-5åå«ä¸º:0ã模åé¢æµC-2äºC-3 =
. dai xie gong cheng. botany. æå¾A C-5 y>â o C-1 â V-âA'â^ s.,^ 155 150 C-2 C-4 C-3 60 55 50 45 6/ppm 40 35 30 å¾éç¨[2-l3C]ä¹é ¸ä¸ºç¢³æºæ¶è§æµå°çè°·æ°¨é ¸å¤éè°±çº¿æ¨¡å¼ [æ¹èªWalshåKoshhand (1984)] C-2å¤çå³°æ6æ¡è°±çº¿ï¼å æ¬ç±G234å¼èµ·çä¸åé谱线ï¼æ¯æ¡çº¿ç强度为; 以åç±Gi234å¼èµ·çä¸åé谱线ï¼æ¯æ¡çº¿ç强度为ï¼å æ-¤ï¼Q/D = 2/3c lppm=10_6 强度ãZ被å®ä¹ä¸ºç»ä¹é µé ¸æ¯è·¯æå©ç¨å¼æ æª¬é ¸çæ¦çï¼æè ï¼ä¹é ¸é ¸æ¯è·¯ä¸-å¼æ æª¬é ¸çå© ç¨åæ°ï¼TCA循ç¯ä¸-ç转å平衡ï¼ãæ ¹æ®WalshåKoshland (1984)çç 究ï¼èå è°·æ°¨é ¸5 个碳åå-ä¸çç¸å¯¹å¯é度ä»C-1è³C-5åå«ä¸º:0ã模åé¢æµC-2äºC-3 = C- 4=1,èC-5 = 0ï¼å®å ¨ä¸å®éªç»æä¸è´ï¼èC-l = (l-z)/2ãå°C-1çå®éªå¼ä»£å ¥è¯¥ å¼ï¼å¯æ±å¾Zç-äºãè¿ä¸WalshåKoshland (1984)åºç¨åºäºä¸-é´ä»£è°¢ç©ç¢³è¾å ¥-è¾åº 平衡çå¤ææ¹æ³æ估计çå¼ç¸åã ç±äºèèäºä¸-é´ä»£è°¢ç©çææåä½ç´ æ è®°ååç©èä¸ä» ä» æ¯å¨ç¹å®ä»£è°¢ç©ç¢³ä½çåä½ç´ å¯é度ï¼å æ-¤ï¼æ¨¡åç»æä¹å¯åç¡®å°è§£éæè·å¾çNMRè°±çç»å¾®ç»æãå³ä½¿æ 记示æå¾ (è§å¾)æ¾ç¤ºæå¤è¾¾6ç§a-é ®æäºé ¸åä½ç´ æ è®°ååç©å-å¨ï¼è¡¨çç»æ表æï¼å¨ç¨³ æä¸ï¼åªæ两ç§a-é ®æäºé ¸åºå½å-å¨ï¼ç¸å¯¹æµåº¦ä¸ºï¼l_Z)/2çKi234 (æGi234)åç¸å¯¹æµ 度为ï¼l + Z)/2çK234 (æG234)ãå¯ç¨ç±»ä¼¼äºèä¸-[3-i3C]ä¸é ®é ¸æ åµçæ¹å¼æ¥å æå¤é谱线模å¼ãç¹å«æ趣çæ¯C-2å¤ç模å¼ãè
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