WeeksR. A., in U. S. Mineral Resources, BrobstD. A., and PrattW. P., Eds., Geol. Survey Prof. Paper 820, 237 (1973).
4.
SandellE. B., Colorimetric Determination of Traces of Metals (Interscience Publishers, New York, NY, 1959), 3rd ed.
5.
GluskoterH. J.RuchR. R.MillerW. G.CahillR. A.DreherG. B., and KuhnJ. K., Illinois State Geol. Survey Circular, 499 (1977).
6.
BottoR. I., in Developments in Atomic Plasma Spectochemical Analysis, BarnesR. M., Ed. (Heyden Press, London, 1981), p. 506.
7.
NadkarniR. A., Anal. Chem.52, 929 (1980).
8.
BottoR. I., Spectrochim. Acta Part B.38B, 129 (1983).
9.
DreherG. B. and SchleicherJ. A., in Trace Elements in Fuel, BabuS. P., Ed., Adv. Chem. Ser. 41 (Amer. Chem. Soc, Washington, D.C., 1975), p. 35.
10.
MusgraveJ. R., in Treatise on Analytical Chemistry, KolthoffI. M.ElvingP. J., and SandellE. B., Eds. (Interscience Publishers, New York, NY, 1962), Pt. 2, Vol. 2, p. 297.
11.
BoumansP. W. J. M., Line Coincidence Tables for Inductively Coupled Plasma Atomic Emission Spectrometry (Pergamon Press Ltd., Oxford, New York, 1980).
12.
BottoR. I., in Developments in Atomic Plasma Spectrochemical Analysis, BarnesR. M., Ed. (Heyden Press, London, 1981), p. 141.
