Pronounced temporal changes in soil microbial community and nitrogen transformation caused by benzalkonium chloride.
J Environ Sci (China)
; 126: 827-835, 2023 Apr.
Article
in English
| MEDLINE | ID: covidwho-1796515
ABSTRACT
As one typical cationic disinfectant, quaternary ammonium compounds (QACs) were approved for surface disinfection in the coronavirus disease 2019 pandemic and then unintentionally or intentionally released into the surrounding environment. Concerningly, it is still unclear how the soil microbial community succession happens and the nitrogen (N) cycling processes alter when exposed to QACs. In this study, one common QAC (benzalkonium chloride (BAC) was selected as the target contaminant, and its effects on the temporal changes in soil microbial community structure and nitrogen transformation processes were determined by qPCR and 16S rRNA sequencing-based methods. The results showed that the aerobic microbial degradation of BAC in the two different soils followed first-order kinetics with a half-life (4.92 vs. 17.33 days) highly dependent on the properties of the soil. BAC activated the abundance of N fixation gene (nifH) and nitrification genes (AOA and AOB) in the soil and inhibited that of denitrification gene (narG). BAC exposure resulted in the decrease of the alpha diversity of soil microbial community and the enrichment of Crenarchaeota and Proteobacteria. This study demonstrates that BAC degradation is accompanied by changes in soil microbial community structure and N transformation capacity.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Microbiota
/
COVID-19
Limits:
Humans
Language:
English
Journal:
J Environ Sci (China)
Journal subject:
Environmental Health
Year:
2023
Document Type:
Article
Affiliation country:
J.jes.2022.04.004
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