Streptococcus suis sorption on agricultural soils: role of soil physico-chemical properties.

摘要: Abstract Understanding pathogen sorption on natural soil particles is crucial to protect public health from soilborne and waterborne diseases. Sorption of Streptococcus suis 10 agricultural soils was examined, its correlations with physico-chemical properties were also elucidated. S. isotherms conformed the linear equation, partition coefficients ( K s ) ranging 12.7 mL g −1 100.1 mL g . Bacteria observed sorb external surfaces aggregates by scanning electron microscopy. Using Pearson correlation regression analysis, solution pH found have significant negative Stepwise multiple path analysis revealed that cation exchange capacity (CEC) main factors influencing behaviors. The obtained overall model = 389.6 − 45.9 × pH − 1.3 × CEC, R 2  = 0.943, P  values. However, variability in less dependent organic matter, specific surface area, texture zeta potential, probably due internal-surface shielding phenomenon aggregates. Additionally, trends cannot be interpreted interaction energy barriers calculated using Derjaguin–Landau–Verwey–Overbeek (DLVO) theory, suggesting limits DLVO theory describing soils. Our results indicated CEC should preferentially considered when modeling process.