Spatial and seasonal variations of antibiotics in river waters in the Haihe River Catchment in China and ecotoxicological risk assessment

Lei, Kai; Zhu, Ying; Chen, Wei; Pan, Huiyun; Cao, Yuanxin; Zhang, Xuan; Guo, Bobo; Sweetman, Andrew J.; Lin, Chunye; Ouyang, Wei; He, Mengchang; Liu, Xi-Tao

doi:10.1016/j.envint.2019.104919

Cited by 117 publications

(34 citation statements)

References 67 publications

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“…The enrofloxacin mass load was higher in the spring of both years, while it was rarely found in autumn, and always in lower loads, reflecting a seasonal use of this fluoroquinolone. The seasonal appearance of enrofloxacin has also been recently reported in another research work [37]. Finally, Tables S1 and S2 show that the reported load of each antibiotic varies significantly, by more than one order of magnitude, between the years and seasons.…”

Section: Photocatalytic Oxidation Experimentssupporting

confidence: 76%

Towards the Removal of Antibiotics Detected in Wastewaters in the POCTEFA Territory: Occurrence and TiO2 Photocatalytic Pilot-Scale Plant Performance

Moles¹,

Mosteo²,

Gómez

et al. 2020

Water

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This research aims to assess the presence of four antibiotic compounds detected in the influent and effluent of wastewater treatment plants (WWTPs) in the POCTEFA territory (north of Spain and south of France) during the period of 2018–2019, and to relate the removal of antibiotic compounds with the processes used in the WWTPs. The performance of a photocatalytic TiO2/UV-VIS pilot-scale plant was then evaluated for the degradation of selected antibiotics previously detected in urban treated effluent. The main results reflect that azithromycin had the highest mass loadings (11.3 g/day per 1000 inhabitants) in the influent of one of the selected WWTPs. The results also show considerable differences in the extent of antibiotics removal in WWTPs ranging from 100% for sulfadiazine to practically 0% for trimethoprim. Finally, the photocatalytic TiO2/UV-VIS pilot-scale plant achieved the removal of the four antibiotics after 240 min of treatment from 78%–80% for trimethoprim and enrofloxacin, up to 100% for amoxicillin, sulfadiazine and azithromycin. The catalyst recovery via mechanical coagulation–flocculation–decantation was almost total. The Ti concentration in the effluent of the TiO2/UV-VIS pilot-scale plant was lower than 0.1% (w/w), and its release into the environment was subsequently minimized.

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Section: Photocatalytic Oxidation Experimentssupporting

confidence: 76%

Towards the Removal of Antibiotics Detected in Wastewaters in the POCTEFA Territory: Occurrence and TiO2 Photocatalytic Pilot-Scale Plant Performance

Moles¹,

Mosteo²,

Gómez

et al. 2020

Water

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“…In line with previous studies 16 , 21 , much higher concentrations of different classes of antibiotics in water were observed in dry season than those in wet season ( p < 0.05) except for PEs (Fig. 3 a).…”

Section: Resultssupporting

confidence: 92%

“…Moreover, higher concentrations of antibiotics occurred in urban area (M4-M10 and T3-T7) than those in suburban area (M1-M3 and T1-T2). In urban areas, the continuous discharge of E-STPs resulted in the high levels of antibiotics in the receiving water 21,28 . Indeed, elevated concentrations of antibiotics were observed downstream of the STPs, e.g.…”

Section: Spatial Distribution Of Antibiotics a Great Spatial Variatimentioning

confidence: 99%

Occurrence and risks of antibiotics in an urban river in northeastern Tibetan Plateau

Kuang

Guo

Hu³

et al. 2020

Sci Rep

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There is a dearth of information on the occurrence and risks of antibiotics in the urban rivers from plateau areas. This study investigated 83 antibiotics in water and sediments of an urban river and effluents of sewage treatment plants (E-STPs) in Xining, Qinghai (northeastern Tibetan Plateau). Fifty-three antibiotics were detected, and the concentrations of individual antibiotics varied in the range of undetected (ND)-552 ng/L in water, ND-164 ng/g in sediments, and ND-3821 ng/L in E-STPs. Seasonal differences of antibiotic concentrations were significant for water samples (p < 0.05) but insignificant for sediments (p > 0.05). In urban area, E-STP is the main source of antibiotics in the river, while runoff from manured cropland contributes partially to antibiotics in the river in the suburban area. The antibiotic compositions in water were different from those in sediments, but were similar to those in E-STPs. Notably, because of strong solar radiation and long sunshine hours in the plateau area, low levels of quinolones, which are sensitive to photolysis, were observed in river water. Moreover, norfloxacin and enrofloxacin, observed in urban river from other regions of China, were not detected in the Huangshui River water. The occurrence of ofloxacin, erythromycin, roxithromycin, clarithromycin, and trimethoprim in E-STPs may induce a possible risk to antibiotic resistance evolution. Trimethoprim, anhydroerythromycin, sulfamethoxazole, sulfapyridine, and clindamycin in river water could pose low to medium risks to aquatic organisms. Further investigation on the occurrence and distribution of antibiotic resistance genes in the Huangshui River is urgently needed.

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“…4 and S1). This matches previous findings for home and personal care product ingredients and antibiotics in the same rivers [22,49]. These observations were probably a result of the combined effect of (1) higher dilution factors and (2) higher inputs of estrogens with sanitary sewer overflows and/or with land surface runoff during or after precipitation in the wet season compared to the dry season [12,50,51].…”

Section: Estrogens In Wastewatersupporting

confidence: 90%

Estrogens in municipal wastewater and receiving waters in the Beijing-Tianjin-Hebei region, China: Occurrence and risk assessment of mixtures

Lei

Lin

Zhu

et al. 2020

Journal of Hazardous Materials

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The potentially high release of estrogens to surface waters as a result of high population density and local livestock production in the Beijing-Tianjin-Hebei region may pose adverse effects on the reproductive systems of aquatic organisms. This study found that total measured concentrations of estrone (E1), 17β-estradiol (E2), estriol (E3), 17αethinylestradiol (EE2) and diethylstilbestrol (DES) were 468±27.2 ng/L in treated wastewater and 219±23 ng/L in river waters in this region. E2, E3 and EE2 were the predominant estrogens in river waters. The restriction of DES for human use should have been enforced, however concentrations of DES were relatively high compared to other studies. It has been estimated that the Haihe and Yongdingxin Rivers deliver approximately 1.8 tonnes of ∑estrogens to the Bohai Bay annually. Concentrations of individual estrogens were significantly higher in river waters in the dry season, however, mass loadings were significantly higher in the wet season. The E2-equivalent concentrations (EEQ) reached 1.2±0.16 and 0.64±0.08 µg-E2/L following long-term and short-term exposure estimates, respectively, in river waters with an average EE2 contribution of over 90%. This could potentially give rise to high risks to fish populations. The presence of estrogens in river waters largely derive from human excretion. Field studies on estrogenic effects on fish reproductive systems are required in this region as a result of high estrogen contamination levels.

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Spatial and seasonal variations of antibiotics in river waters in the Haihe River Catchment in China and ecotoxicological risk assessment

Cited by 117 publications

References 67 publications

Towards the Removal of Antibiotics Detected in Wastewaters in the POCTEFA Territory: Occurrence and TiO2 Photocatalytic Pilot-Scale Plant Performance

Towards the Removal of Antibiotics Detected in Wastewaters in the POCTEFA Territory: Occurrence and TiO2 Photocatalytic Pilot-Scale Plant Performance

Occurrence and risks of antibiotics in an urban river in northeastern Tibetan Plateau

Estrogens in municipal wastewater and receiving waters in the Beijing-Tianjin-Hebei region, China: Occurrence and risk assessment of mixtures

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