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茵草园

铁虫 (初入文坛)

[交流] DittmerLester钼蓝显色剂配法

我在做磷脂的TLC,显色剂需要DittmerLester钼蓝显色剂,之前按照别人帮忙搜到的配方:
Molybdenum blue reaction according to Dittmer and Lester
For detection of phospholipids and phosphoric acid derivatives
Solution I: Boil 40.11g MoO3 in 1 liter 25N sulfuric acid for 3-4 hours until the molybdenum oxide is completely dissolved. Let the light yellow solution slowly cool to ambient temperature overnight. The solution will turn light blue.
Solution II: Boil 1.78 g molybdenum powder and 500ml of solution I for 15min, cool and decant from the remaining residue.

For preparation of the spray reagent, add equal volumes of solutions I and II to 4.5 volume parts water. A dark green solution is formed.
Solutions I and II are stable for several months when stored in the dark. The spray reagent has to be prepared weekly.

发现三氧化钼根本无法溶解,不知道是不是配方有问题,大家有没有做过相关研究的,给点建议吧,谢谢
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forest95

木虫 (小有名气)

★ ★
小木虫(金币+0.5):给个红包,谢谢回帖交流
karl2100(金币+1,VIP+0):谢谢应助! 7-20 20:33
钼蓝显色剂的原理是钼酸铵与磷酸盐反应,生成磷钼酸铵,再经还原形成磷钼酸蓝而显色。其配置方法:钼酸铵9.6g,硫酸铈0.4g,10%硫酸水溶液 200ml,混匀,极淡的黄色溶液,棕色瓶密闭保存。
2楼2009-07-20 09:41:08
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dxdtq

金虫 (正式写手)

学习了
3楼2009-07-20 16:10:11
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