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流动稀释法测定后处理料液中的游离酸是根据不同浓度的游离酸用稀酸通过分散池稀释到一确定的酸度(在分光光度计上对应于一确定的吸光度)所用的时间来测定游离酸的浓度,建立该方法的理论基础是被稀释物质(该方法中指游离酸)在分散池中被稀释时,其浓度的负对数与稀释到一定酸度
Determination of the free acid in the post-treatment liquor by flow dilution method is based on the time it takes for the free acid to dilute through a dispersion cell to a defined acidity (corresponding to a defined absorbance on a spectrophotometer) with dilute acid at different concentrations Acid concentration, the theoretical basis for the establishment of the method is diluted material (in this method refers to the free acid) is diluted in the dispersion cell, the negative logarithm of the concentration and diluted to a certain acidity