Premium
Sampling for Purgeable Organic Compounds Using Positive‐Displacement Piston and Centrifugal Submersible Pumps: A Comparative Study
Author(s) -
Knobel LeRoy L.,
Mann Larry J.
Publication year - 1993
Publication title -
groundwater monitoring and remediation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 47
eISSN - 1745-6592
pISSN - 1069-3629
DOI - 10.1111/j.1745-6592.1993.tb00446.x
Subject(s) - piston (optics) , centrifugal pump , sampling (signal processing) , displacement (psychology) , chloroform , positive displacement meter , piston pump , petroleum engineering , environmental science , carbon tetrachloride , centrifugal force , chemistry , chromatography , analytical chemistry (journal) , hydraulic pump , mechanical engineering , engineering , rotational speed , electrical engineering , physics , organic chemistry , psychology , filter (signal processing) , wavefront , impeller , optics , psychotherapist
Positive‐displacement piston pumps that minimize sample agitation have no apparent advantage over centrifugal submersible pumps when used to collect ground water samples for analysis of low concentrations of purge‐able organic compounds. Analytical uncertainties inherent in laboratory environments appear to influence analytical results of low‐concentration purgeable organic compound samples more than either pump type or sampling team. Centrifugal submersible pumps are at least equally efficient as positive‐displacement piston pumps in the recovery of carbon tetrachloride, 1,1,1‐trichloroethane, trichloroethylene, and chloroform after sampling and analytical influences are made constant.