role of divalent cations on deposition of cryptosporidium parvum oocysts on natural organic matter surfaces. | a radial stagnation point flow (rspf) system coupled with a microscope was used to study deposition of cryptosporidium parvum oocysts on quartz and suwannee river natural organic matter (srnom)-coated surfaces in solutions with different ca(2+) or mg(2+) concentrations. both untreated and proteinase k-treated oocysts were used. deposition of oocysts on a srnom surface in ca(2+) solution was higher than in mg(2+) solution, even though the energy barriers calculated from derjaguin-landau-verwey-ov ... | 2010 | 20465262 |