. dan bai zhi fen zi ji chu. botany. 40,000 20,000 10,000ï¼ 5,000: æ75ã TryåTyrå¨280 miléè¿æä¸ä¸ªå¸æ¶å³°ï¼Pheå¨257 nmæä¸ä¸ªå¸æ¶å³°ã大å¤æ°èç½è´¨ å¨280 nméè¿æä¸ä¸ªå¸æ¶å³°ãè¿ä¸ªå¸æ¶å³°ä¸»èæ¯ç±äºTryåTyræ®åºçå¸æ¶ã åè²å¢çå¸æ¶å è°±ï¼åä¸åä¸ç§ å ç´ çå½±åï¼ 1. pHçå½±å 溶åçpHå³å®å¯çµç¦»çåè²å¢ ççµç¦»ç¶æãä¾å¦ï¼Tyrå¨pH 6å pH 13ç两个溶液ä¸-ï¼æä¸åçç´«å¤ å¸æ¶å è°±ï¼å¦å¾9-2æ示ãå¨pHl3ï¼ ç±äºTyrçé åºOHåççµç¦»èå¸¦è´ çµè·ï¼ä½¿æ大å¸æ¶å³°çæ³¢é¿ï¼>L,i)å å åå-å¸æ¶ç³»æ°ï¼å åå-æ¶å ç³»æ°ï¼ ^å¢å¤§ã ã 2. 溶åæé»è¿åå-çææ§å½±å ææ§æº¶ååéææ§æº¶å对ææ§å è²å¢çå¸æ¶å è°±æä¸åçå½±åãä¾ å¦ï¼Tyrå¨ææ§æº¶åä¸-çAm,,å°äº å¨éææ§æº¶
. dan bai zhi fen zi ji chu. botany. 40,000 20,000 10,000ï¼ 5,000: æ75ã TryåTyrå¨280 miléè¿æä¸ä¸ªå¸æ¶å³°ï¼Pheå¨257 nmæä¸ä¸ªå¸æ¶å³°ã大å¤æ°èç½è´¨ å¨280 nméè¿æä¸ä¸ªå¸æ¶å³°ãè¿ä¸ªå¸æ¶å³°ä¸»èæ¯ç±äºTryåTyræ®åºçå¸æ¶ã åè²å¢çå¸æ¶å è°±ï¼åä¸åä¸ç§ å ç´ çå½±åï¼ 1. pHçå½±å 溶åçpHå³å®å¯çµç¦»çåè²å¢ ççµç¦»ç¶æãä¾å¦ï¼Tyrå¨pH 6å pH 13ç两个溶液ä¸-ï¼æä¸åçç´«å¤ å¸æ¶å è°±ï¼å¦å¾9-2æ示ãå¨pHl3ï¼ ç±äºTyrçé åºOHåççµç¦»èå¸¦è´ çµè·ï¼ä½¿æ大å¸æ¶å³°çæ³¢é¿ï¼>L,i)å å åå-å¸æ¶ç³»æ°ï¼å åå-æ¶å ç³»æ°ï¼ ^å¢å¤§ã ã 2. 溶åæé»è¿åå-çææ§å½±å ææ§æº¶ååéææ§æº¶å对ææ§å è²å¢çå¸æ¶å è°±æä¸åçå½±åãä¾ å¦ï¼Tyrå¨ææ§æº¶åä¸-çAm,,å°äº å¨éææ§æº¶åä¸-çï¼a,ã 3. é»è¿åè²å¢çç¸å¯¹ååï¼å¸¸å¸¸. 240 260 æ³¢é¿ï¼nm) å¾9-1å¨pH6溶液ä¸-ï¼TryãTyråPheçç´«å¤å¸æ¶å è°± å¨pH6çä¹*大= 274ntn å¨pH 13çAs大= 295nm 4000 2000- 对åeæå¾å¤§å½±åã æ ¹æ®å·²ç¥ç»æçgç½è´¨çç´«å¤å¸æ¶å è°±ç 究ï¼äººä»¬å·²ç»æ»ç»åºä¸åç»éªè§å¾ï¼ 1. å¦æTryãTyrã PheåHisä»ææ§ ç¯å¢ç§»å ¥éææ§ç¯å¢ä¸-ï¼å>^maiåÂ£å¢ å ãæ ¹æ®è¿ä¸è§å¾ï¼å¯ä»¥å¯¹ä¸åç°è±¡ä½åº æ¨æµï¼ (ä¸ï¼ å¨ææ§æº¶åä¸-ï¼å¦æèç½è´¨ä¸- æ°¨åºé ¸æ®åºç>^n>aiå£大äºèªç±å-å¨ç åä¸ç§æ°¨åºé ¸ç^a,å£ï¼é£ä¹ï¼è¿ç§æ°§ åºé ¸æ®åºä¸å®ä½äºèç½è´¨åå-çå é¨ï¼å¹¶ 被éææ§æ°¨åºé ¸æ®åºæå å´ã (äºï¼ å¦æèç½è´¨å¸æ¶å ill对溶å
Size: 1506px × 1660px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectbotany
