24小时热门版块排行榜    

查看: 276  |  回复: 1

liuxus20030704

银虫 (小有名气)

[求助] 求助实验操作的一个问题

In a 50 mL distillation flask 0.2 ml of extract and 12.3 mL of 95% ethanol are added, and then proceeds to the cooling of the same in water and ice to prevent the initiation of the reaction. In this situation you add 12.5 mL of concentrated HCl containing 300 mg L-1 of FeSO4•7 H2O (to catalyze the reaction), and shall be read spectrophotometrically from 360 to 700 nm, at base line recorded with water。
请问这段话中, “and shall be read spectrophotometrically from 360 to 700 nm, at base line recorded with water”是什么意思啊?谢谢
回复此楼
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

quiller2000

木虫 (著名写手)

【答案】应助回帖

感谢参与,应助指数 +1
tuobaohua(金币+1): 积极应助,欢迎常来科研版参与交流! 2012-02-29 08:41:15
liuxus20030704(金币+5): 谢谢大侠 2012-02-29 15:49:08
我理解是做一个紫外可见光谱扫描,扫描范围是360-700nm, 光谱扫描的control是水
致良知
2楼2012-02-28 21:41:25
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 liuxus20030704 的主题更新
信息提示
请填处理意见