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钮的原子序数为23原子量为50.94钮的测定方法有比色法,如钽试剂萃取比色法,PAR—H_2O_2比色法;还有容量法,在容量法中我们认为在硫酸的介质中用过硫酸铵氧化容量法为最理想,因为过硫酸铵是最强的氧化剂,它的标准氧化势为2.00伏,比高锰酸钾的标准氧化势1.51伏高得多,而且过量的过硫酸铵通过煮沸很易除去,本方法的特点是在硫酸的介质中,而不经过硫酸发烟,这样就缩短了分析的时间。因为要达到硫酸发烟,温度就得高于硫酸的沸点,这就需要一段时间,同
Button atomic number of 23 atomic weight 50.94 button determination of colorimetric methods, such as tantalum reagent extraction colorimetry, PAR-H_2O_2 colorimetric method; and capacity method, in the volume method we think in the sulfuric acid medium Ammonium persulfate oxidation capacity is ideal because ammonium persulfate is the strongest oxidant with a standard oxidation potential of 2.00 volts, much higher than the standard oxidation potential of potassium permanganate, 1.51 volts, and an excess of ammonium persulfate Easy to remove by boiling, this method is characterized by the sulfuric acid medium, without sulfuric acid smoke, thus shortening the analysis time. Because to achieve sulfuric acid smoke, the temperature must be higher than the boiling point of sulfuric acid, which takes some time,