这个在分析里是什么意思啊？.请帮忙看下吧？ 楼上说的对。titre是指滴定的意思，是titer的变体；而mls是指毫升；这个意思是滴定度（单位毫升）。给你看一个英文的分析过程，这两个词都有，自己理解一下看是否是这个意思。呵呵。a.using uv spectrophotometerpipette 2 ml of the stack solution into a 100 ml volumetric flask,add 5 mls of n sulphuric acid and dilute to 100 ml with distilled water.shake well to ensure mixing.measure the optical density of this solution at 298 nm in a 1 cm silica cell,using water as reference.calculation:optical density × 20 = ml/1 btl make-up in the plating solution.b. volumetric method 1. pipette 50 mls of the plating solution into a 150 mls separating funnel.2. add 1 ml of concentrated hydrochloric acid and shake for 30 seconds.3. add 25 ml of ethyl acetate and shake for one minute.4. allow the layers to separate and run off the aqueous layer.5. rinse down the sides of the separating funnel with 10－25 mls of distilled water. do not shake.run off water layer.6. repeat step 5.7. add 15 mls of methanol and 5 drops of bromo-cresol purple indicator.8. titrate with 0.1 n sodium hydroxide solution to a blue/violet end point (titre a).9. repeat the above procedure using 50 mls of distilled water instead of the plating solution (titre b).calculation: (titre a － titre b) ×2.76 = ml/l btl make-up present in theplating solution. 查看更多
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