该滴定酸度为乳酸的滴定酸度：具体测定方法为: 称取5 g样品，置于150 mL 锥形瓶中, 用40 mL 新煮沸冷却到40 ℃的蒸馏水稀释均匀, 滴3滴ρ= 10 g/L酚酞指示剂, 然后用0.1 mol/L的NaOH溶液滴定, 至微红, 并在30 s内红色不消失, 所用NaOH溶液的毫升数×20即为该样品的酸度值( °T) , 每个样品, 重复测三次,求平均值.
...，滴定酸度，发酵条件 [gap=1191]Key words：Streptococcus thermophilus ST1;fermented skim milk;viscosity;titration acidity;fermentation conditions ...
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分析了以草酸钠为基准物标定高锰酸钾标准溶液浓度的反应原理，标定操作及温度、酸度、滴定速度等滴定条件对标定结果的影响。
This paper discusses the reaction principle and titrimetric operation in defining consistency of potassium permanganate titrant which sodium oxalate is regarded as the basis material.
本文从原理和应用两个方面，讨论了配位滴定中选择和控制溶液酸度的重要性和复杂性。
In this paper, the importance and complexity of the selection and control of the solution acidity in coordination titration was discussed through the principle and the application.
利用本实验室自制的电容实时测量装置对巯基丙酸自组装膜的表面酸度进行电容滴定研究。
The acid base equilibrium of self assembly monolayer(SAM) of mercaptopropionic acid on gold electrode was studied by capacitance titration.
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