Chem. J. Chinese Universities ›› 1986, Vol. 7 ›› Issue (4): 319.

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Study on Poiseuille Equation for Atomic Absorption Spectrometry

Sun Hanwen, Liu Zhanfeng, Zhao Wei, Yang Xuedong   

  1. Department of Chemistry, Hebei University, Baoding
  • Received:1985-02-06 Online:1986-04-24 Published:1986-04-24

Abstract: According to fundamentals of hydrokinetics and specific conditions of aspiration process, this paper describes the following Poiseuille equation for AAS: QL=π·R4(Pn-ρgh-Pσ)/8ηL The effects of negative pressure at the spray nozzel (Pn), relative height of solution surface (h), capillary length(L), solution viscosity(η) and additive pressure caused by solution surface tension (Pσ) on aspiration rate (Qi) were quantitatively and experimentally examined. The experimental results are in agreement with theoretical analysis, ' The agreement indicates that the Poiseuille Equation for AASis reasonable.

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