The combined effects of antimony (Sb) and sodium diethyldithiocarbamate (DDTC), a common organic flotation reagent, on soil microbial activity and speciation changes of heavy metals were investigated for the first time. The results showed that the exchangeable fraction of Sb was transformed to a stable residual fraction during the incubation period, and the addition of DDTC promoted the transformation compared with single Sb pollution, probably because DDTC can react with heavy metals to form a complex. In addition, the presence of DDTC and Sb inhibited the soil microbial activity to varying degrees. The growth rate constant k of different interaction systems was in the following order on the 28th day: control group >= single DDTC pollution > combined pollution > single Sb pollution. A correlation analysis showed that the concentration of exchangeable Sb was the primary factor that affected the toxic reaction under combined pollution conditions, and it significantly affected the characteristics of the soil microorganisms. All the observations provide useful information for a better understanding of the toxic effects and potential risks of combined Sb and DDTC pollution in antimony mining areas. | Publication name | JOURNAL OF HAZARDOUS MATERIALS, 349 160-167; 10.1016/j.jhazmat.2018.01.044 MAY 5 2018 | | Author(s) | Zhu, Xiaozhe; Yao, Jun; Wang, Fei; Yuan, Zhimin; Liu, Jianli; Jordan, Gyozo; Knudsen, Tatjana Solevic; Avdalovic, Jelena | | Corresponding author(s) | WANg Fei
wangfei@ustb.edu.cn
Univ Sci & Technol Beijing, Sch Energy & Environm Engn, Beijing Key Lab Resource Oriented Treatment Ind P, 30 Xueyuan Rd, Beijing 100083, Peoples R China YAO Jun
yaojun@cugb.edu.cn
China Univ Geosci Beijing, Sch Water Resource & Environm Engn, Sino Hungarian Joint Lab Environm Sci & Hlth, 29 Xueyuan Rd, Beijing 100083, Peoples R China | | Author(s) from IGCAS | Knudsen, Tatjana Solevic | View here for the details
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