(5) Lâsztity, Α.; Wang, X.; Viczian, M.; Is rael, Y.; Barnes, R. M. J. Anal. At. Spec trom. 1989,4,737-42.

(6) Stanek III, E. J.; Calabrese, E . J . Barnes, R. M. Keegan, E.; Lâsztity, A. Wang, X.; Gilbert, C E . ; Pastides, H. Kostecki, P. J. Trace Elem. Exp. Med. 1988, 1, 179-90.

(7) Binder, S.; Sokal, D.; Maughan, D. Arch. Environ. Health 1986, 41, 341-45.

(8) Clausing, P.; Brunekreff, B.; van Wij-nen, J. H. Int. Arch. Occup. Environ. Med. 1987,59,73.

(9) Davis, S.; Waller, P.; Buschom, R.; Bal-lou, J.; White, P. Arch. Environ. Health, in press.

(10) Lâsztity, Α.; Viczian, M.; Wang, X.; Barnes, R. M. J. Anal. At. Spectrom. 1989,4,761-66.

(11) Iyengar, G. V. Elemental Analysis of Biological Systems; CRC Press: Boca Ra­ton, FL, 1989; Vol. 1.

(12) Snyder, W. S.; Cook, M. J.; Nasset, E. S.; Karhausen, L. R.; Howells, G. P.; Tipton, I. H. Report of the Task Group on Reference Man; Pergamon Press: Ox­ford, 1975; pp. 365-418.

(13) Adriano, D. C. Trace Elements in the Terrestrial Environment; Springer-Ver-lag: New York, 1986.

(14) Iyengar, G. V.; Woittiez, J. Clin. Chem. 1988, 34, 474-81.

(15) Tsalev, D. C ; Zaprianov, Ζ. Κ. Atomic Absorption in Occupational and Envi­ronmental Health Practice; CRC Press: Boca Raton, FL, 1983; Vol. 1, Chapter 2.

(16) Hee, S.S.Q.; Boyle, J. R. Anal. Chem. 1988,60,1033-42.

(17) Reeves, R. D.; Brooks, R. R. Trace Ele­ment Analysis of Geological Materials; Wiley: New York, 1978.

(18) Iyengar, G. V. Clin. Nut. 1987, 6, 105. (19) Igarahi, Y.; Kawamura, H.; Shiraishi,

K.; Takaku, Y. J. Anal. At. Spectrom. 1989,4,571-76.

(20) Tôlg, G. Fresenius Z. Anal. Chem. 1988,331, 226-35.

(21) Paschal, D. C. Spectrochim. Acta 1989,445,1229-36.

(22) Houk, R. S.; Thompson, J . J . Mass Spectrom. Rev. 1988, 7, 425-61.

(23) Date, A. R.; Gray, A. L. Applications of Inductively Coupled Plasma Mass Spectrometry; Blackie: Glasgow, 1989.

(24) Calabrese, E. J.; Stanek, E. J.; Gilbert, C. E.; Barnes, R. M. Regul. Toxicol. Phar­macol. 1990,12, 88-95.

(25) Calabrese, E. J.; Stanek III, E. J.; Gil­bert, C. E.; Layton, D.; Barnes, R. M., submitted for publication in Regul. Toxi­col. Pharmacol.

(26) Viczian, M.; Lâsztity, Α.; Barnes, R. M. J. Anal. At. Spectrom. 1990, 5, 293-300.

(27) Delves, H. T.; Campbell, M. J. J. Anal. At. Spectrom. 1988,3, 343-48.

(28) Campbell, M. J.; Delves, H. T. J. Anal. At. Spectrom. 1989,4, 235-36.

(29) Yaffee, Y.; Flessel, C ; Wesolowski, J.; Del Rosario, Α.; Guirguis, G.; Matias, V.; DeGarmo, T.; Coleman, G.; Gramlich, J.; Kelly, W. Arch. Environ. Health 1983,38, 237.

(30) Hammond, P. B.; Clark, C. S.; Gart-side, P. S.; Berger, Ο.; Walker, Α.; Mi­chael, L. W. Int. Arch. Occup. Environ. Health 1980,46,191.

(31) Boeckx, R. L. Anal. Chem. 1986, 58, 274 A-288 A.

(32) Chaney, R. L.; Mielke, H. W.; Sterrett, S. B. In Lead in Soil: Issues and Guide­lines; Davies, B. E.; Wixson, B. G., Eds.; Science Reviews Ltd.: Northwood, U.K., 1988; pp. 105-41.

Ramon M. Barnes is a professor of chemistry at the University of Massa­chusetts, Amherst. He received his B.S. degree from Oregon State Univer­sity in 1962, his M.A. degree from Co­lumbia University in 1963, and his Ph.D. in 1966 from the University of Illinois. His research interests include fundamental and applied aspects of electrical plasmas (e.g., ICPs, dc plas­ma jets, microwave plasmas, and low-pressure rf plasmas).

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