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求助外文中的一個實(shí)驗(yàn)操作
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For flavonoids (F) determination, skin extract and wine samples were diluted 100 times, with ethanol-hydrochloric acid solution and an absorbance spectrum in the range 230-700 nm was recorded. The F content was calculated according to the following formula: F=E280*df*82.4 E280 = specific extinction coefficient at 280nm assessed with the graphic method (absorbance corresponding to the segment, parallel to the y-axis, starting from the peak maximum at 280 nm and finishing on the tangent joining the points of minimum at the left and at the right of the peak). |
» 搶金幣啦!回帖就可以得到:
+1/92
+1/80
+1/74
+1/66
+2/38
+1/37
+1/31
+1/30
+1/21
+1/18
+1/18
+1/17
+5/10
+1/9
+1/8
+1/6
+1/5
+1/3
+1/2
+1/1
禁蟲 (文學(xué)泰斗)
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