the use of aqueous mixed micellar system consisting of sodium dodecyl sulfate (sds) and polyoxyethylene (23) dodecanol (brij-35) as the mobile phase in reversed-phase liquid chromatography was studied. a group of chlorophenols was used as the test mixture. adding organic modifier to the system showed that the use of low concentrations of organic additives improves efficiency in sds/brij-35 mixe...

The production and repair of radiation-induced DNA damage were measured by filter elution in strains of mouse lymphoma L5178Y cells differing in their sensitivity to ionizing radiation. The induction of radiation-induced damage, as measured by filter elution at pH 12.1, 9.6, and 7.2, was similar in the resistant strain LY-R and the sensitive strain LY-S. The repair of single-strand breaks and a...

Many methods have been devised for producing gradients in elution fluids for ion-exchange chromatography (l-9). While many of these are invaluable for special purposes, none appears to allow: (a) the production of a complex multicomponent gradient directly from a graphic presentation, and (b) the possibility of changing from gradient to stepwise elution with the same system. A simple method for...

amino acids derived from the MOPC 31C plasma cell tumor and resolved by the RPC-2 column chromatography was published (28). Except for tryptophan, multiple peaks of isoaccepting tRNA were observed for each of the other 19 amino acids, each having its characteristic elution pattern. As compared to E. coli studied under similar Chromatographie conditions (24), MOPC 31C plasma cell tumors showed v...