試題詳解

40.某甲依環保署標準方法及樣品保存規定以同一樣品進行生化需氧量(BOD)及化學需氧量 (COD)試驗，假設樣品中所有的有機物皆可氧化且試驗過程無誤，則下列何項數據不合理？
(A) BOD = ND , COD = 15 mg/L
(B) BOD = 10 mg/L , COD = 15 mg/L
(C) BOD = 15 mg/L , COD = 10 mg/L
(D) BOD = ND , COD = ND