The available/exchangeable metal pool of the biosolids was determined by extraction with a magnesium chloride solution.Eight g of dry biosolids were shaken with 40 mL of a 1 M magnesium chloride solution (pH 7) at room temperature for 2 h.
The available/exchangeable metal pool of the biosolids was determined by extraction with a magnesium chloride solution.Eight g of dry biosolids were shaken with 40 mL of a 1 M magnesiumchloride solution (pH 7) at room temperature for 2 h.