خيارات البحث
النتائج 1751 - 1760 من 62,508
Enhancement of anaerobic treatment efficiency through process modification.
1987
Harper S.R. | Pohland F.G.
The role of agricultural sediments and chemicals in eutrophication [Nonpoint-source pollution, surface waters].
1980
Bachmann R.W.
San-Diego-area agencies sign joint-powers pact to study [water] reclamation in practical terms [California].
1977
Elkins B.
The potential role of temperate forests as sinks for CO(2): examples from the German environmental policy against global warming.
1992
Gregor H.D.
Three-year growth responses of Pinus taeda L. to simulated rain chemistry, soil magnesium status, and ozone.
1992
Edwards N.T. | Edwards G.L. | Kelly J.M. | Taylor G.E. Jr.
Effects of ambient rain chemistry on field-grown radish - an exploratory approach by multiple linear regression.
1992
Kostka Rick R. | Manning W.J.
Tetracyclines uptake from irrigation water by vegetables: Accumulation and antimicrobial resistance risks النص الكامل
2023
Gudda, Fredrick | Odinga, E.S. | Tang, L. | Waigi, M.G. | Wang, J. | Abdalmegeed, D. | Gao, Y.
Wastewater irrigation may introduce antibiotic residues in the soil-plant systems. This study aimed to investigate the uptake of tetracyclines by spinach and collard greens and assess associated ecological and human health risks. Synthetic wastewater spiked with 1 ppm and 10 ppm of oxytetracycline, doxycycline, and tetracycline was used to grow vegetables in a greenhouse pot experiment. The uptake and accumulation of the tetracyclines were low and residual concentrations in the soil were negligible. All the tetracyclines were detected at concentrations ranging from 1.68 to 51.41 μg/g (spinach) and 1.94–30.95 μg/g (collard greens). The accumulation rate was in a dose-response scenario with a bioconcentration factor of 6.34 mL/kg (spinach) and 2.64 mL/kg (collard greens). Oxytetracycline had the highest accumulation in leaves, followed by doxycycline and tetracycline, and the residual concentrations followed the same order. The highest residual concentration was in soils receiving 10 ppm oxytetracycline. Residual concentrations in the soil were lower than accumulated levels and exerted negligible ecological risks. Tetracyclines accumulation in spinach significantly differed between the vegetables demonstrating a subspecies difference in uptake and accumulation. Ecological risk quotient (RQ) and human health risk quotient (HQ) were below thresholds that would exert toxicity and resistance selection impacts. Although RQs and HQs are low (<0.1), this study shows that the vegetables accumulate tetracyclines from irrigation water, posing plausible human health risks to allergic individuals. Similarly, the ecological risks cannot be ignored because the synergistic and antagonistic effects of sublethal concentrations can perturb ecosystem processes.
اظهر المزيد [+] اقل [-]Study of microbial inactivation in the marine environment [Pollution, Spain].
1983
Borrego J.J. | Arrabal F. | Vicente A. de | Gomez L.F. | Romero P.
Leaching characteristics of lignite ash [Groundwater contamination, coal gasification].
1983
Humenick M.J. | Lang M. | Jackson K.F.
Water pollution research in South Africa.
1979
Cillie G.G. | Coombs P. | Odendaal P.E.
