학술논문
Soil Adsorption, Photodegradation, and Removal of Antibiotics from Water by Duckweed: Case studies examining Erythromycin, Lincomycin, and Others / 水中の抗菌薬の土壌吸着，光分解，ウキクサによる除去 ―エリスロマイシンやリンコマイシン等を例として―
Document Type
Journal Article
Author
Source
環境技術 / Journal of Environmental Conservation Engineering. 2023, 52(6):296
Subject
Language
Japanese
ISSN
0388-9459
1882-8590
1882-8590
Abstract
For obtaining fundamental data about the fate of ampicillin （ABPC）, oxytetracycline （OTC）, erythromycin （EM）, and lincomycin （LCM） in water environments, distributions of resistant bacteria, soil adsorption, photodegradation, and removal by duckweed were studied. Against the total population of heterotrophic bacteria in a water sample from Lake Biwa, bacteria resistant to 50 ㎎/L ABPC, OTC, EM, and LCM were, respectively, 4.3, 1.9, 2.5, and 26％. During the soil adsorption test, ABPC and OTC at 10 ㎎/L decreased respectively to 81％ and 15％ in 2 days. Under sunlight, 1.0 ㎎/L OTC and EM decreased respectively to ＜0.5％ and 58％ in 5 days. The duckweed uptake test results showed that 0.1 ㎎/L ABPC and EM decreased respectively to 28％ and 21％ in 7 days. These results demonstrate that LCM was slightly adsorbed to soil, photodegraded, or removal by duckweed, indicating its persistence in water environments.