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求助外文中的一个实验操作
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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). |
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2楼2012-02-29 17:13:15
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liuxus20030704(金币+1):谢谢参与
tuobaohua(金币+1): 积极参与交流，欢迎常来科研版！ 2012-02-29 20:54:23
liuxus20030704(金币+1):谢谢参与
tuobaohua(金币+1): 积极参与交流，欢迎常来科研版！ 2012-02-29 20:54:23
3楼2012-02-29 19:37:22
简单回复
2012-02-29 21:10
liuxus20030704(金币+1):谢谢参与
祝福祝福
buyanru5楼
2012-05-28 20:52
liuxus20030704(金币+1): 谢谢参与
neu2346楼
2012-05-28 21:42
liuxus20030704(金币+1): 谢谢参与