【摘要】 通过实验证明使用低浓度的硫代硫酸钠标液时 ,可用已配制标定好的硫代硫酸钠标准贮备液直接稀释使用 ,不需重新标定。此法切实可行 ,完全能满足样品分析的要求 ,既省时省力 ,又节约试剂 ,值得推广。更多还原

【Abstract】 It don’t need demarcate again through diluting directly when using standard solution of sodium thiosulfate, that has been tested in experiments. The method not only satisfy sample analysis but also save time, labour and regent, so it is worthy of extending.更多还原