Minling Gao1, Wenhua Song2, Qian Zhou3, Xiaojun Ma3, Xiaoying Chen3. 1. 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. 2. School of Environmental and Chemical Engineering, Tianjin Polytechnic University, No. 399 Binshui Western Road, Xiqing District, Tianjin 300387, China. Electronic address: gaominling2010@gmail.com. 3. School of Environmental and Chemical Engineering, Tianjin Polytechnic University, No. 399 Binshui Western Road, Xiqing District, Tianjin 300387, China.
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.
Interactive effect of n class="Chemical">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.