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Updated: Jun 28, 2026

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for Cu(II) Through Microwave Pre-Pyrolysis
Published on: February 12, 2019
On-line preconcentration with activated carbon for microwave plasma torch atomic emission spectrometry
1Department of Chemistry, Jilin University, Changchun 130023, People's Republic of China.
Abstract:
This paper presents a method whereby trace elements are adsorbed in NH(4)ClNH(3) medium on activated carbon and then determined by microwave plasma torch atomic emission spectrometry (MPT-AES). The working conditions (including microwave forward power, gas flow rate, NH(3)NH(4)Cl concentration in the sample solution, HCl concentration in the eluant, sample introduction rate and preconcentration time) were investigated in detail. The effects of concomitant ions were studied. The experimental results for such analytes as Pb, Mn, Cd, Cu and Fe indicate that the procedure can eliminate fundamentally the interferences caused by alkali and alkaline earth metal elements and the application of it to the determination of iron in industrial silicon and tap water samples is successful.
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