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8561296 
Journal Article 
Design and testing of an aqueous phase liquid-liquid extractor (APLE) for the determination of organochlorine contaminants 
Mccrea, RC; Fischer, JD 
1985 
138 
English 
A field unit for the extraction of 200-L water samples was devised to provide a means of determining low-level organochlorine contaminants. This aqueous phase liquid-liquid extractor recirculates dichloromethane (d = 1.326) and is capable of concentrating and isolating contaminants in less than 2 h. Recovery tests based on two trials simulating environmental concentrations of 0.05, 0.25 and 1.0 ppt are presented for the following contaminants: HCB; alpha-BHC, gamma-BHC; heptachlor; aldrin; heptachlor epoxide; gamma-chlordane; alpha-chlordane; alpha-endosulfan; p,p'-DDE; dieldrin; endrin; o,p'-DDT; p,p'-TDE; p,p'-DDT, beta-endosulfan; mirex; and p,p'-methoxychlor. Over the range of concentrations studied, the mean percent recovery was found to vary from 70% to 123%, with an overall mean recovery of 92%. -Authors