title: Interactive effect of oxytetracycline and lead on soil enzymatic activity and microbial biomass.
abstract: Interactive effect of oxytetracyline (OTC) and lead on soil enzymatic activity and population of microbes was studied in the paper. The results showed effect of pollutants on bacteria, actinomycetes and enzymatic activity increased in the order: (OTC+Pb)>Pb>OTC, (OTC+Pb)>Pb>OTC and (OTC+Pb)>OTC>Pb, respectively. However, impact of pollutants on fungi decreased in the order: (OTC+Pb)<Pb<OTC. The analysis of X-ray photoelectron spectroscopy (XPS) showed that binding energy and atomic percentage of Al, Fe, C, O, N, Si, Mg and Ca altered after the amended with OTC or Pb. The decrease of oxygen atom density and increase of binding energy can be associated to the charge transfer, resulting from oxygen and carbon atoms coordinated with metal ions, other chemicals or partial decomposition. Thus, the findings of this study can provide a better insight into the interaction of both pollutants and their impacts on soil quality.
authors.affiliation: School of Environmental and Chemical Engineering, Tianjin Polytechnic University, No. 399 Binshui Western Road, Xiqing District, Tianjin 300387, China. Electronic address: gaominling@yahoo.com.cn.
authors.forename: Minling
authors.initials: M
authors.lastname: Gao
authors.affiliation: School of Environmental and Chemical Engineering, Tianjin Polytechnic University, No. 399 Binshui Western Road, Xiqing District, Tianjin 300387, China. Electronic address: gaominling2010@gmail.com.
authors.forename: Wenhua
authors.initials: W
authors.lastname: Song
authors.affiliation: School of Environmental and Chemical Engineering, Tianjin Polytechnic University, No. 399 Binshui Western Road, Xiqing District, Tianjin 300387, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Zhou
authors.affiliation: School of Environmental and Chemical Engineering, Tianjin Polytechnic University, No. 399 Binshui Western Road, Xiqing District, Tianjin 300387, China.
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Ma
authors.affiliation: School of Environmental and Chemical Engineering, Tianjin Polytechnic University, No. 399 Binshui Western Road, Xiqing District, Tianjin 300387, China.
authors.forename: Xiaoying
authors.initials: X
authors.lastname: Chen
mesh_terms: D039903:Actinobacteria / Q000187:drug effects* / Q000201:enzymology / Q000254:growth & development; D000469:Alkaline Phosphatase / Q000378:metabolism*; D001419:Bacteria / Q000187:drug effects* / Q000201:enzymology / Q000254:growth & development; D001426:Bacterial Proteins / Q000378:metabolism*; D018533:Biomass; D005656:Fungal Proteins / Q000378:metabolism*; D007854:Lead / Q000009:adverse effects*; D010118:Oxytetracycline / Q000009:adverse effects*; D056951:Photoelectron Spectroscopy; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000009:adverse effects*; D013393:Sucrase / Q000378:metabolism*
chemical_list: D001426:Bacterial Proteins; D005656:Fungal Proteins; D012989:Soil Pollutants; D007854:Lead; D000469:Alkaline Phosphatase; D013393:Sucrase; D010118:Oxytetracycline
keywords: Combined pollution; Enzymatic activity; Heavy metal; Interaction mechanism; Oxytetracycline