摘要 : The metalimnetic oxygen minimum (MOM) is a common anaerobic phenomenon that occur between 5.00 and40.00 m of reservoirs. Amino acids (AAs) are widely found in water, but their change in MOM remain unclear. Inthis study, four AAs w... 展开 The metalimnetic oxygen minimum (MOM) is a common anaerobic phenomenon that occur between 5.00 and40.00 m of reservoirs. Amino acids (AAs) are widely found in water, but their change in MOM remain unclear. Inthis study, four AAs with different side chain groups were selected to explore the change of their samples andrelated disinfection by-products formation potential (DBPFPs) under MOM condition. The results showed thatthe final degradation rate of dissolved organic carbon and dissolved organic nitrogen of four AAs samples were11.71%-59.87% and 26.50%-100.00% under MOM condition. Aspartic acid samples were the easiest to bedegraded, whereas glycine samples were the opposite. While the total fluorescence intensity increased by6.30%-113.40% for the appearance of tryptophan-like substance. The total DBPFPs of glutamic acid, arginineand aspartic acid samples were finally decreased by 4.73%, 8.00% and 98.88% (glycine sample increased by 2.30times). Compared with the surface condition, the degradation of AAs samples and the change of DBPFPs weresignificantly inhibited under MOM condition. In addition, the diversities of bacterial communities were significantly reduced under MOM condition, which was very unfavorable to the degradation of AAs samples, andin turn affected the control of DBPs and deteriorated the water quality. 收起