Deposition kinetics of bacteriophage MS2 to natural organic matter: Role of divalent cations

摘要: Abstract The role of divalent cations (i.e. Ca2+ and Mg2+) in the deposition kinetics bacteriophage MS2 onto flat bare silica surfaces Suwannee River Natural Organic Matter (SRNOM)-coated was investigated using a Quartz Crystal Microbalance (QCM) coupled with radial stagnation point flow (RSPF) system. Experimental results demonstrated that attachment efficiencies SRNOM surface were seven to seventeen times higher presence than Mg2+. A similar trend observed for adsorption polyglutamic acid, which is one carboxylate-containing amino acid residues found on capsids present SRNOM-coated surfaces. difference rates solution containing either or Mg2+ can be explained by stronger tendency compared form cation bridges binding carboxylate groups both capsids. Moreover, those at concentrations 0.3 mM emphasized important groups. data also showed reduced efficiency 1 mg/L SRNOM.