【摘要】 用K2S2O8代替不稳定而易分解的(NH4)2S2O8,或用氨水中和已分解显酸性的(NH4)2S2O8,而使实验结果满意。并将试剂用量减到原试剂用量的1/2和1/4仍能得到非常好的效果,从而达到对该实验的进一步改进。更多还原

【Abstract】 In order to obtain satisfactory resalts,the instability and easily decomposed compownd-peroxydisulfate ammonium is replaced by peroxy disulfate kalium,or was neutralized with ammonia water.After the colsage of reagent reduced to one half or one fourth of the former,the better effects have gotten,throngh which the experiment was further improved.更多还原