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On-line separation and preconcentration of inorganic arsenic and selenium species in natural water samples with CTAB-modified alkyl silica microcolumn and determination by inductively coupled plasma-optical emission spectrometry

Chemical EngineeringEnvironmental ChemistryNatural Water SamplesEngineeringEnvironmental EngineeringMetalloid ContaminationSelenium SpeciesMass SpectrometryInorganic ArsenicEnvironmental Analytical ChemistryAnalytical ChemistryChemistryMedicineMineral ProcessingElemental CharacterizationTrace ElementChromatographyWater Analysis