在实验室实验中，通过明矾混凝和石灰软化以及预氯化和后氯化处理地下水、地表水、二级出水和黄腐酸样品。混凝和软化都去除了大量的非挥发性有机氯、有机氯的前体和总有机碳（TOC）。有机氯前体的去除效果与TOC相当或优于TOC，且远优于预氯化过程中形成的有机氯。石灰处理过程中pH值的增加水解了大量不挥发性有机氯，释放出氯仿和其他副产品。 作者得出以下结论:在4 C和pH值为2.0的条件下储存样品可以有效地保存样品，用于非可蒸煮有机氯（NPOCl）分析；与明矾混凝处理样品时的后氯化相比，预氯化导致成品水中的NPOCl值更高；石灰软化将大量NPOCl水解为氯仿和其他副产品；TOC的去除是后氯化样品NPOCl去除的保守指标，但不是预氯化样品的良好指标。包括26个参考文献、表格和图表。

Samples of groundwater, surface water, secondary effluent, and fulvic acid were treated in laboratory experiments by alum coagulation and lime softening in conjunction with prechlorination and postchlorination. Coagulation and softening both removed significant amounts of nonvolatile organic chlorine, precursors of organic chlorine, and total organic carbon (TOC). Organic chlorine precursors were removed as well as or better than TOC and much better than the organic chlorine formed during prechlorination. The increase in pH during lime treatment hydrolyzed a significant fraction of the nonvolatile organic chlorine, releasing chloroform and other byproducts. The following conclusions are made by the authors: storage of samples at 4 C and pH 2.0 effectively preserves samples for nonpurgeable organic chlorine (NPOCl) analysis; prechlorination results in higher values of NPOCl in finished waters as compared to postchlorination when samples are treated by alum coagulation; lime softening hydrolyzes a significant amount of NPOCl to chloroform and other by-products; and removal of TOC is a conservative indicator of NPOCl removal for postchlorinated samples but is not a good indicator for prechlorinated samples. Includes 26 references, tables, figures.