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The Annual Cycle of Some Minor Elements in Linsley Pond (North Branford, Connecticut) as Determined by Optical Emission

  • Ursula M. Cowgill
Part of the Developments in Applied Spectroscopy book series (DAIS, volume 10)

Abstract

A procedure is described employing a Jarrell Ash direct reading optical emission unit. A special optical arrangement was developed for this study. A 55 mm focal length, spherical quartz lens was used in the arc stand to focus the electrodes’ image on a variable aperture located on a rider base on the optical bar. This aperture is closed down to eliminate the incandescence of the electrodes entering the instrument. A 135 mm slit mounted lens was employed to permit the light passed by the mask to completely fill the grating.

Keywords

Annual Cycle Optical Emission Watch Glass Variable Aperture Rider Base 
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References

  1. 1.
    Cowgill, U. M. 1970 The hydrogeochemistry of Linsley Pond, North Branford, Connecticut. I. Introduction, field work and chemistry by X-ray emission spectroscopy. Arch. Hydrobiol. 68: 1–95.Google Scholar
  2. 2.
    Israelyan, A. D. 1959 Trace elements in the ash of Maikop crude oil. Trudy Azerbaidzhan. Nauch. - Issledovatel. Inst. po Dobyche 8:274–281. ( Chem. Abst. 55: 18082L ).Google Scholar
  3. 3.
    Jarrell-Ash Company 1970 Determination of mercury by flameless atomic absorption. Atomic absorption analytical method. No. Hg-1. pp. 1–6.Google Scholar

Copyright information

© Plenum Press, New York 1972

Authors and Affiliations

  • Ursula M. Cowgill
    • 1
  1. 1.Department of BiologyUniversity of PittsburghPittsburghUSA

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