German standard methods for the analysis of water, waste water and sludge; Summary action and material characteristic parameters (group H); Determination for the chemical oxygen demand (COD); short duration method (H 43)
德国水、废水和污泥分析标准方法;总结作用和材料特征参数(H组);化学需氧量(COD)的测定;短时法(H43)