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A adsorbent for cadmium had been prepared by loading an anion-exchange resin with a novel supramolecular compound named thiacalix[4]arenetetrasulfonate (TCAS). The adsorption properties of Cd2+ on TCAS-adsorbed resin had been studied and the effects of varying temperature, pH value, adsorption time and initial conentration. Batchwise extraction studies had revealed a high adsorption ability of the...
A sensitive and fast analytical method using purge-and-trap (P&T) on-line coupling with gas chromatography was developed for the determination of four trace volatile halohydrocarbons including methylene, chloroform, carbon tetrachloride and trichloroethylene in water. The analytes were purged for 10min from the sample by high purity nitrogen and preconcentrated in the cooled trap at -80 degC ...
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