Design and optimization of a Teflon Helix Continuous Liquid-Liquid Extraction Apparatus and its application for the analysis of organophosphate pesticides in water

Rapid gas chromatography–mass spectrometry screening method for human pharmaceuticals, hormones, antioxidants and plasticizers in water

“…The 10 l/h O-CLLE was developed based upon a 2 l/h CLLE developed by Wu and Suffet [37] and upgraded by Baker et al [32]. The 10 l/h CLLE is comprised of water and solvent (e.g., methylene chloride) reservoirs and is pumped (via RHiCKC, Fluid Metering, Oyster Bay, NY, USA) at a water:solvent ratio of 10:1 at a rate of 10/(l/h) into two equivalent 9.75 m PTFE coil extraction columns coils (i.d.…”

Evaluation of the goulden large-sample extractor for acidic compounds in natural waters

“…Goldberg et al [22] described a counter-flow LLE with three extraction stages which could use either lighter-thanwater or heavier-than-water solvents. A continuous LLE using flow through a Teflon helix to mix immiscible phases has been developed by Suffet and coworkers [10,23,24]. This system uses an integrated phase separator and an evaporative concentrator to recover solvent for recycling and to concentrate the extract for further analysis.…”

A filtration and column-adsorption system for onsite concentration and fractionation of organic substances from large volumes of water

“…Previous organic-constituent-isolation procedures from water have used solvent extraction (Wu and Suffet, 1977), adsorption chromatography (Thurman and Malcolm, 1981), evaporation (Katz and others, 1972), freeze drying (Malcolm, 1968), freeze concentration (Shapiro, 1961), and reverse osmosis (Deinzer and others, 1975). However, most of these procedures have one or more of the following limitations: (1) Lack of capability to process a sufficient volume of water; (2) no discrimination between organic and inorganic constituents; and (3) noncomprehensiveness for all organic constituents.…”