美国和美国的饮用水源和经处理的饮用水中已发现微囊藻毒素LR（MLR） 加拿大超过95%的中型和大型供水设施使用氯，并将其作为 如果为MLR的氯化制定CT值，结果将很容易获得。七 在10℃下进行了批量实验，以确定MLR与游离氯的相互作用 在pH值为6到9的条件下，接触时间超过100分钟。采用酶联免疫吸附法对样品进行分析 免疫吸附试验（ELISA）。随着pH值的降低和 游离氯浓度增加。未发现MLR完全失活，但 在一些病例中观察到接近ELISA检测限的浓度。 包括40个参考文献、表格和图表。

Microcystin-LR (MLR) has been identified in source and treated drinking waters in the U.S. and Canada. Chlorine is used by more than 95% of the medium and large water utilities and as a result would be easily accessible if CT values were developed for chlorination of MLR. Seven batch experiments were conducted to determine the interaction of MLR and free chlorine at 10C at pH values from 6 to 9 over 100 minutes of contact time. Samples were analyzed by enzyme-linked immunosorbent assay (ELISA). Inactivation of MLR increased as pH decreased and as the free chlorine concentration increased. Complete inactivation of MLR was not found, but concentrations near the detection limit of ELISA were observed in several cases. Includes 40 references, tables, figures.