【摘要】 在参考有关文献的基础上，对目前化学需氧量（铬法）测定方法的研究及改进的现状进行综述，并通过对改进方法的优缺 点的比较分析，探讨替代现行标准回流法测定化学需氧量的可能性。更多还原

【Abstract】 This paper discussed the research of the present chemical volume of aerobo determination method and the improvement situation, basis on refering to the relative document. And it explored the possibility of replac- ing present standard back-flowing method to determine chernical voume of aerobes.更多还原