17 research outputs found
Occurrence of microorganic pollutants in the atmosphere of Singapore during haze and non-haze periods
No full textDetermination of hyperoside and isoquercitrin in rat plasma by membrane-protected micro-solid-phase extraction with high-performance liquid chromatography
No full textNovel solid-phase membrane tip extraction and gas chromatography with mass spectrometry methods for the rapid analysis of triazine herbicides in real waters
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Protecting Trade Secrets Under International Investment Law: What Secrets Investors Should Not Tell States
No full textElectric Field Driven Extraction of Inorganic Anions Across a Polymer Inclusion Membrane
No full textThe potential use of plasticized cellulose acetate membranes for electric field driven extraction and preconcentration of inorganic anions was studied. The extraction of highly lipophilic ions such as perchlorate is possible by employing a membrane without any ion carrier, while anions of low lipophilicity, such as phosphate, require a carrier. Best extraction efficiency could be obtained for a membrane of 20 mu m thickness and an applied voltage of 200V. In a flow-through arrangement the preconcentration factor was inversely dependent on the flow rate but constant for different concentrations. The extraction of perchlorate down to 2nM was demonstrated
Porous-membrane-protected polyaniline-coated SBA-15 nanocomposite micro-solid-phase extraction followed by high-performance liquid chromatography for the determination of parabens in cosmetic products and wastewater
No full textEvaluation of a novel microextraction technique for aqueous samples: Porous membrane envelope filled with multiwalled carbon nanotubes coated with molecularly imprinted polymer
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Determination of fluoroquinolones in bovine milk samples using a pipette-tip SPE step based on multiwalled carbon nanotubes prior to CE separation
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