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Recycling/One-Way Dual-Mode Nebulization System for Inductively Coupled Plasma Atomic Emission Spectrometry

1991; Springer Nature; Volume: 7; Issue: 1 Linguagem: Inglês

10.2116/analsci.7.49

1348-2246

Hirofumi Isoyama, Tetsuo Uchida, Chuzo Iida, Genkichi Nakagawa,

Laser-induced spectroscopy and plasma

The dual-mode nebulization system in inductively coupled plasma atomic emission spectrometry was newly designed for practical use, using a small spray chamber and a concentric nebulizer. The drain in the one-way mode was simply switched to the nebulizer with a rotary valve for the recycling mode. The present system allowed nebulization to maintain for 20 min with a 2 ml sample, a rapid sample exchange within 10 min, and a low memory of 0.01%. A problem due to the gradual enrichment of determinants was easily overcome with an internal standard method. The sensitivity and reproducibility in both modes were comparable to those of a conventional one-way system. The present system was successfully applied to the analysis of some reference materials, A decomposed sample was measured in the recycling mode, while standards for calibration were measured in the one-way mode in order to save time and procedure.