[求救] 關於生物鹼的問題（有獎金唷）
※ [本文轉錄自 Biotech 看板]
作者: airolg (恩) 看板: Biotech
標題: [求救] 關於生物鹼的問題（有獎金唷）
時間: Sat Jan 16 21:54:07 2010
有兩題關於生物鹼以及分析化學的問題想請問各位大大
都是單選 但是沒有答案>_<
1.which is the best way to purify an alkaloid?
[1]CH2Cl2/MeOH 98:2, Si column
[2]acetate buffer/MeOH 80:20, C18 column
[3]phosphate buffer/MeOH, PRP column
[4]Ion pair elution in buffer, C18 column
[5] NaCl gradient in phosphate buffer, anionic exchange column
2.which statement in the following is not correct?
[1] supercritical fluid extraction is most useful for extraction of volatile
components
[2] CH2Cl2/MeOH 2:1 is best for the extractionof polar and nonpolar small
molecules
[3] acid buffer solution is best for the extraction of long chain fatty acids
[4] acid bufffer solution is best for the extraction of alkaloids
[5] none above
拜託各位高手解惑mOm 如有解出一題100P哦~~~~~~ :)
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