The effects ofchloride and boric acid on the epimerization of D-arabinose to D-ribose in aqueous solution using ammonium paramolybdate as catalyst was studied.
In the medium of nitric acid, the trace chloride in the cement concrete was determined by turbidimetry.
在硝酸介质中，通过比浊法测定水泥混凝土中微量氯化物。
3
According to the experimental results adipic acid plus sodium chloride appear to be one of the most promising additives among the numerous inorganic and organic compound additives.