研究了在两个季节性采样期间从丹江口水库获得的水和沉积物样品中三种典型药品和个人护理产品(PPCPs)的浓度和分布规律,以确定其对水质的影响。通过在平均流量期(6月)和干旱期(11月)获得的数据,分析了测得的浓度的时空变化,并将其与生态风险相关。我们发现丹江口水库水样中酮洛芬(KTP)的检出率很高;浓度范围从未检测到(ND)到46.80ng/L,在汉库支流样品中测得的最高,其次是在丹江口水库主体收集的样品。在这项研究中,Danku支流样品中的KTP浓度最低。此外,申定河中KTP的浓度,四河,江河,关山河,建河水样在平均流量期相对较高。在平均流量期和干燥期,水样中三氯生(TCS)和三氯卡班(TCC)的检出率和浓度均较低。3种PPCPs均在沉积物样品中检测到,TCS,和TCC范围从0.76到7.89μg/kg,0.01至0.59μg/kg,和0.01至11.36μg/kg,分别。总的来说,与最近文献报道的结果相比,水和沉积物样品中三种测得的PPCPs的浓度都相对较低。水样中PPCPs的干态浓度低于平均流量时测得的浓度。然而,与平均流量期样品相比,沉积物样品中的干期浓度更高。我们对丹江口水库PPCPs的时空格局的解释表明,这些化合物可能主要来自水库上游的废水排放。在这项研究中,使用风险商(RQ)方法对检测到的PPCPs进行了生态风险评估。我们发现水和沉积物中的TCS在一年中的不同时间对藻类构成中等生态风险。鉴于丹江口水库水安全的极端重要性,PPCPs的生态风险需要额外关注。
The concentrations and distribution patterns of three typical pharmaceuticals and personal care products (
PPCPs) in water and sediment samples obtained from Danjiangkou Reservoir during two seasonal sampling periods were studied to determine their impact on water quality. The temporal and spatial variations in concentrations measured were analyzed and related to ecological risks with data obtained during the mean-flow period (in June) and the dry period (in November). We found a high detection rate of ketoprofen (KTP) in water samples from Danjiangkou Reservoir; the concentrations ranged from not detected (ND) to 46.80 ng/L with the highest values measured in the Hanku tributary samples followed by the samples collected in the main body of Danjiangkou Reservoir. The KTP concentrations in the Danku tributary samples were the lowest measured in this study. In addition, the concentrations of KTP in the Shending River, Sihe River, Jianghe River, Guanshan River, and Jianhe River water samples were relatively high in the mean-flow period. The water sample detection rates and concentrations of triclosan (TCS) and triclocarban (TCC) were low in both the mean-flow period and the dry period. All three kinds of
PPCPs were detected in the sediment samples with the concentrations of KTP, TCS, and TCC ranging from 0.76 to 7.89 μg/kg, 0.01 to 0.59 μg/kg, and 0.01 to 11.36 μg/kg, respectively. Overall, the concentrations of the three measured PPCPs in the water and sediment samples were all relatively low compared to results reported in the recent literature. The dry period concentrations of
PPCPs in the water samples were lower than the concentrations measured in the mean-flow period. However, dry period concentrations were higher in the sediment samples compared to those in the mean-flow period samples. Our interpretation of the spatial and temporal patterns of
PPCPs in Danjiangkou Reservoir suggests that these compounds were likely mainly derived from wastewater discharge in the upper reaches of the reservoir. The risk quotient (RQ) method was used for an ecological risk assessment of the detected
PPCPs in this study. We found that TCS in water and sediment posed medium ecological risks to algae at different times of the year. In view of the extreme importance of water safety in Danjiangkou Reservoir, the ecological risks of PPCPs require additional attention.