碱量法

碱量法是水产行业测定壳聚糖脱乙酰度的标准方法，应用广泛。

Alkalimetry is standard method of determining degree of deacetylation of chitosan generally applied in aquaculture and other industry .

用CP/MAS13C-NMR、耗碱量法和酸碱中和法研究了反应过程中羧基含量的变化；

CP / MAS 13C-NMR , alkali consumption and acid-alkali neutralization were used to measure the carboxyl content formed in the system .

纯度分析的精密度好，变异系数不大于0.19%，准确度高，本法与碱量法相比，两种方法测定结果的相对偏差不大于0.25%。

Both precision and accuracy of the purity analysis are good , the coefficient of variation is not more than 0.19 % , the relative deviation of the results to be determined with two methods is not more than 0.25 % .

碱量滴定法测定四价铈溶液中的游离酸

Alkalimetric determination of free acid in cerium (ⅳ) solution

GB/T3653.1-1988硼铁化学分析方法碱量滴定法测定硼量

Methods for chemical analysis of ferroboron & The alkalimetric method for the determination of boron content

粉末中硼的含量取决于硼源的种类和用量。GB/T3653.1-1988硼铁化学分析方法碱量滴定法测定硼量

Boron content of SiC / B powder depends on the kind of boron sources and its quantity . Methods for chemical analysis of ferroboron & The alkalimetric method for the determination of boron content

结论：致密膜分离得到的麻黄、黄连中生物碱纯度高于醇沉方法但生物碱量不及醇沉法。

Conclusion : Purity of alkaloids from Herba Ephedra and Rhizoma Coptidis by membrane separation is Superior to that by alcoholic sediment but amount of alkaloids is reverse .