N-亚硝基二甲胺（NDMA）的几个疑似成因 对活性污泥中的形成进行了显著性测试。 在水资源有限且处理过的废水正在被处理的情况下，NDMA值得关注 用于补给含水层以获得饮用水。NDMA形成的重要因素 分别测定了亚硝酸盐和氯的浓度以及存在的 二硫代氨基甲酸盐，如福美双、齐拉姆和费巴，含有二甲胺 结构亚硝酸盐的加入没有促进NDMA的形成 指有机前体。不同批次活性污泥的NDMA产量不同； 然而，观察到了同样的趋势。这种可变性表明 水质本身和/或生物活性可能会影响NDMA的范围 由前体化合物形成。包括18个参考文献、表格、图表。

Several factors suspected of contributing to N-nitrosodimethylamine (NDMA) formation were tested for significance with respect to formation in activated sludge. NDMA is of concern in situations where water is limited and treated wastewater is being used to recharge aquifers for drinking water. The significant factors in NDMA formation were determined to be nitrite and chlorine concentrations and the presence of dithiocarbamates, such as thiram, ziram and ferbam that contain a dimethylamine structure. The addition of nitrite did not promote NDMA formation without the presence of an organic precursor. NDMA yields varied with different batches of activated sludge; however, the same trends were observed. This variability indicated that the water quality itself and/or biological activity may contribute to the extent of NDMA formation from precursor compounds. Includes 18 references, tables, figures.