Multi-channel Dilution Analysis Using a Microwave Induced Plasma

Abstract

Multi-channel dilution analysis (MCDA) is a novel calibration method that creates signal stairsteps by splitting the sample stream entering an instrument into tubes of different length and diameter and then recombining them into a single tube before the measurement. In this work, the technique is applied to microwave induced plasma optical emission spectrometry (MIP-OES), a method that measures signals sequentially. The method is validated through the analysis of certified reference materials, and matrix effects are corrected for 20% ethanol and 0.2% calcium solutions. The advantages of using MCDA for sequential measurements are discussed.