This paper introduced the indirect determination of polyphosphate in laundry powder by potentiometric titration, the method is featured of simple, rapid and reliable.
用强酸分解洗衣粉中的聚磷酸盐，以电位滴定法间接测定其中的聚磷酸盐含量。
The polarographic catalytic wave method for the indirect determination of sulfate radical was introduced. The influence factors and the experimental conditions had been discussed.
介绍了一种用极谱催化波间接测定硫酸根的方法，讨论了实验条件和干扰因素。
Using equilibrium shift of buffer solution, indirect determination of a number of ionic even molecular components by FIA in combination with potentiometric detection can be realized.
利用缓冲体系的平衡移动，结合不同的电极进行电势法检测，可间接测定样品中各种离子甚至中性分子的浓度。
A relatively systematic review is carried out on the basic principles, reagents, methods and applications of indirect and direct spectrophotometric determination of sulphate.
本文就硫酸根的间接及直接光度测定的基本原理、试剂、方法和应用等作了较为系统的评述。
However only indirect approaches can be applied to the determination of oxygen demanded by tiny living individuals because in this case it is hard to make direct measurement.
然而对于一些微小生物个体无法直接测量，只有通过间接的方法求得。
Recent progress of analytical methods for the determination of trace bromine in coal samples, including direct and indirect methods, were summarized in this paper.
综述了近年来国内外煤中痕量溴测定方法的研究进展，介绍了间接分析法和直接分析法的基本特点和原理。
Recent progress of analytical methods for the determination of trace bromine in coal samples, including direct and indirect methods, were summarized in this paper.
综述了近年来国内外煤中痕量溴测定方法的研究进展，介绍了间接分析法和直接分析法的基本特点和原理。
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