Abstract
This paper describes an analytical method for the quantitation of iron, cobalt, nickel, and copper in lanthanum fluoride at trace levels with graphite furnace atomic absorption spectrometry (GFAAS) without using any matrix modifier. These metals were preconcentrated in HNO3 and analyzed directly. The detection limits for iron, cobalt, nickel, and copper were found to be 3, 1, 2, and 2 ppb, respectively. The average precision of measurements (°/o RSD) for all the elements was <10%.
Get full access to this article
View all access options for this article.
References
1.
Poulain
Mi.
Poulain
Ma.
Lucas
J.
Brun
P.
, Mat. Res. Bull. 10 , 243 (1975 ).
2.
Gannon
J. R.
, Proc. SPIE. 266 , 62 (1981 ).
3.
France
P. W.
Carter
S. F.
More
M. W.
Day
C. R.
, Br. Telecom. Techn. J. 5 , 28 (1987 ).
4.
Tokiwa
H.
Mimura
Y.
Shinbori
O.
Nakai
T. J.
, J. Lightwave Technol. LT-3 , 569 (1985 ).
5.
MacFarlane
D. R.
Matecki
N.
Poulain
M.
, J. Non-Cryst. Solids 64 , 351 (1984 ).
6.
Ohishi
Y.
Mitachi
S.
Kanamori
T.
Manabe
T.
, Phys. and Chem. Glasses 24 , 135 (1983 ).
7.
Lines
M. E.
, J. Appl. Phys. 55 , 4052 (1984 ).
8.
France
P. W.
, “Intrinsic Loss Measurements,” in Fluoride Glass Optical Fibers ,
France
P. W.
Ed. (CRC Press , Boca Raton, Florida , 1990 ), Chap. 5, p. 122 .