OSA's Digital Library

Applied Spectroscopy

Applied Spectroscopy

| PUBLISHED BY SAS — AVAILABLE FROM SAS AND OSA

  • Vol. 24, Iss. 6 — Nov. 1, 1970
  • pp: 583–587

Spectrographic Determination of Calcium in Latex of Natural Rubber (Hevea brasiliensis)

S. K. Ng, R. C. H. Hsia, and P. T. Lai

Applied Spectroscopy, Vol. 24, Issue 6, pp. 583-587 (1970)


View Full Text Article

Acrobat PDF (494 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations
  • Export Citation/Save Click for help

Abstract

A cathode layer dc arc method of determining microgram amounts of calcium in latex of Hevea brasiliensis is described. Using lithium carbonate and lanthanum sulphate as buffers, a working curve covering 0.032% to 10.0% Ca in ash of latex can be constructed with palladium as internal standard. Phosphate and silica suppress Ca emission but silica has a considerably greater effect. Of the four matrices examined, the composition with 44.7% K2O, 22.3% P2O5, and 13.4% MgO, which is most representative of the composition of latex ash, gives reproducible Ca values and these are in closest agreement with those obtained by atomic absorption. The spectrographic technique may be extended to simultaneously determine trace amounts of Mn, Fe, Cu, and Si.

Citation
S. K. Ng, R. C. H. Hsia, and P. T. Lai, "Spectrographic Determination of Calcium in Latex of Natural Rubber (Hevea brasiliensis)," Appl. Spectrosc. 24, 583-587 (1970)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-24-6-583


Sort:  Journal  |  Reset

References

References are not available for this paper.

Cited By

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited