请帮帮翻译一段长话hydrogen peroxide in sodium percar ...? also the active oxygen concentration from hydrogen peroxide in sodium percarbonate can be obtained and accurate volumetric analysis of hydrogen peroxide by reducing ceric salts to cerous salts or by liberating iodine from an iodide, followed by titration with a thiosulfate solution. 另外,活泼的氧可以从过碳酸钠中的过氧化氢中浓缩得到,通过从铈盐中缩减铈或者碘盐中分离碘,接着用硫代硫酸盐溶液点滴法,进行精确体积分析。查看更多