Abstract
Partially hydrolyzed polyacrylamide (PHPA) can be determined in a concentration range of 1 ppm to 100 ppm in dirty oil field water with a precision of +/-1% and a lower limit of detection of 10 ppb. Solutions of high molecular weight PHPA are analyzed by high-performance size exclusion chromatography with 100 A pore size, diol bonded phase silica columns eluted with a 0.1 M sodium perchlorate and 0.005 M pentanesulfonic acid paired ion reagent solution. UV detection at 190 nm wavelength is used for quantitation. Polymer solutions must be shear degraded to prevent column plugging. Analyses of water produced by both polymer and polymer plus sulfonate surfactant floods are illustrated. 13 references, 8 figures, 1 table.
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