Zhang Hua-Fang, Yang Jun, Du Peng, Wang Cong-Cong, Li Xi-Qing
Beijing Urban Drainage Monitoring Center Co., Ltd., Beijing 100012, China.
Laboratory of Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
Huan Jing Ke Xue. 2016 Jul 8;37(7):2522-2529. doi: 10.13227/j.hjkx.2016.07.014.
Concentrations of ketamine (KET) and its metabolite, norketamine (NK) in sewage water and surface water in Beijing were examined by HPLC-MS/MS. Samples were collected from all the thirteen sewage treatment plants in the urban area and four rivers flowing through the city. Average influent concentrations of KET and NK in 2013 summer ranged from <MQL to (19.5±5.1) ng·L and <MQL to (6.2±2.1) ng·L, respectively. The calculated loads of KET and NK ranged from (0.1±0.0) to (8.6±2.4) mg·(1000 inh·d) and (0.3±0.1) to (3.2±1.1) mg·(1000 inh·d), respectively. The removal rate during treatment was low and even negative at some plants for KET and NK. KET was widely detected in surface waters (<MQL to 17.8 ng·L), whereas NK was below MQL in all surface water samples. Concentration of KET in Tonghui River was higher than those in most of the STPs, indicating direct disposal of KET and/or direct discharge of sewage into the river.
采用高效液相色谱-串联质谱法（HPLC-MS/MS）检测了北京污水和地表水中氯胺酮（KET）及其代谢产物去甲氯胺酮（NK）的浓度。从市区所有13家污水处理厂以及流经该市的四条河流采集了样本。2013年夏季，KET和NK的平均进水浓度分别为低于方法检出限（MQL）至（19.5±5.1）ng·L和低于MQL至（6.2±2.1）ng·L。计算得出的KET和NK负荷分别为（0.1±0.0）至（8.6±2.4）mg·（1000人·天）和（0.3±0.1）至（3.2±1.1）mg·（1000人·天）。在一些工厂，KET和NK在处理过程中的去除率较低，甚至为负。地表水中广泛检测到KET（低于MQL至17.8 ng·L），而所有地表水样本中的NK均低于MQL。通惠河中的KET浓度高于大多数污水处理厂，表明KET被直接排放以及/或者污水被直接排入河中。
