Comparison of droplet-size distribution and matrix effects in flame atomic absorption spectrometry applying hydraulic high-pressure/perfomance nebulization and pneumatic nebulization

J. Posta, H. Berndt, B. Derecskei

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The solution to be analysed is forced through a very fine nozzle (20 μm) under a pressure of 100-400 bar (10-40 MPa) using a liquid chromatographic pump, resulting in an aerosol for sample introduction in atomic absorption spectrometry (AAS). Compared with pneumatic nebulization, the hydraulic high-pressure/performance nebulization (HHPN) causes an essentially smaller proportion of large droplets (> 16 μm): HHPN, 1%; standard flame AAS nebulization, 7%; inductively coupled plasma nebulization, 34%. The smaller droplets of the HHPN aerosol lead to higher sensitivity (2-fold in signal height, 5-6-fold in signal area) and to lower matrix interferences (better evaporation of smaller droplets in the spectroscopic source).

Original languageEnglish
Pages (from-to)261-267
Number of pages7
JournalAnalytica Chimica Acta
Volume262
Issue number2
DOIs
Publication statusPublished - Jun 5 1992

Fingerprint

Atomic absorption spectrometry
Pneumatics
droplet
spectrometry
Spectrum Analysis
Hydraulics
hydraulics
Pressure
matrix
Aerosols
aerosol
fold
pump
Inductively coupled plasma
evaporation
plasma
Nozzles
Evaporation
liquid
Pumps

Keywords

  • Atomic absorption spectrometry
  • Nebulization

ASJC Scopus subject areas

  • Biochemistry
  • Analytical Chemistry
  • Spectroscopy
  • Environmental Chemistry

Cite this

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