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OPTIMIZATION OF EXPERIMENTAL PARAMETERS FOR FLOW INJECTION ICP-AES

Zucheng Jiang

Abstract

The Parameters that govern the preformancc of Flow Injection sample introdution for Inductively Coupled Plasma Atomic Emission Spectrometry were investigated and compared with continuous nebulization Inductively Coupled Plasma Atomic Emission Spectrometry. It was found that the carrier flow-rate, Ar flow rate and sampling volume were the major parameters influencing the analyte emission intensity. With lower carrier flow-rate, the normalised analyte emission intensity was 10 times better than that of the conventional continuous nebulization. The dispersion, exposure time and the ratio of the signal to background were also related to the sampling volume. The Ar flow rate was an important parameter so the analyte signal increased with the increased of Ar flow rate, then the emission intensity will reach a platform. Thus, the experimental parameters should be adopted properly in practical analysis.

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Key concepts: Analyte, Volumetric flow rate, Emission intensity, Inductively coupled plasma, Analytical Chemistry (journal), Inductively coupled plasma atomic emission spectroscopy, Chemistry, Intensity (physics)