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| Joint effects of galaxolide and cadmium on the quantity of soil microorganisms and enzyme activities |
| Received:March 08, 2021 |
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| KeyWord:galaxolide (HHCB);cadmium (Cd);microorganism count;soil enzyme activity |
| Author Name | Affiliation | E-mail | | ZHAO Zhiyu | School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China | | | Lü Ze | School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China | lvze_2006@163.com | | WEI Wei | School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China | | | HAN Xiaomo | School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China | |
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| Abstract: |
| To investigate the effect of organic and heavy metal pollution on microorganisms in soil, the effects of galaxolide(HHCB) and Cd pollution on the number and activity of microorganisms in soil were investigated. The results showed that HHCB alone and combined with Cd contamination showed inhibitory effects on bacteria at 1 d of incubation and promotional effects on bacteria(except during single contamination with 100 mg·kg-1 HHCB) at 80 d of incubation, promotional effects on fungal growth, and inhibitory effects on Actinomycete growth. Bacterial 16S rRNA gene copy number increased with increasing HHCB concentration, whereas fungal 18S rRNA gene copy number and Actinomycete copy number decreased with increasing HHCB concentration. HHCB contamination alone and in combination with Cd showed an inhibitory effect on urease activity(1 d and 80 d) (except for contamination with 800 mg·kg-1 HHCB), sucrase activity, and acid phosphatase activity(1 d). At 80 d of incubation, 400 mg·kg-1 and 800 mg·kg-1 HHCB alone and in combination with Cd showed a promotive effect on acid phosphatase activity. |
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