lows t h e characterization of t r a n s i e n t luminescent intermediates and the s t u d y of reaction decay lifetimes. T h e L P D A s p e c t r o p h o t o m e t e r is becoming t h e d e t e c t o r of choice in m a n y areas of U V - V I S spectroscopy ( H P L C , k i n e t ics, molecular a n d a t o m i c spectros copy, luminescence studies, a n d spectroelectrochemistry) in which t h e s p e e d of acquisition a n d completeness of s p e c t r a l information are i m p o r t a n t .
Future trends
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SUPPLY A Division of Science Related Materials, Inc. Ρ Ο Box 136« Janesville, WI 53547-1368/U S A CIRCLE 125 ON READER SERVICE CARD 1214 A · ANALYTICAL CHEMISTRY, VOL. 57, NO. 11, SEPTEMBER 1985
On t h e technological front t h e n e x t horizon in a r r a y s p e c t r o p h o t o m e t e r s will be t h e t w o - d i m e n s i o n a l array. F u t u r e t r e n d s in research a n d i n d u s t r y for L P D A s p e c t r o p h o t o m e t e r s can be expected t o include improved software a n d c o m p u t e r systems t o t a k e a d v a n tage of t h e s p e e d of t h e L P D A a n d t h e w e a l t h of information available from t h e array, longer arrays, a n d d e d i c a t e d application-oriented L P D A s y s t e m packages. T h e m o s t i m p o r t a n t t r e n d of all is t h e i m p a c t t h a t t h e L P D A s p e c t r o p h o t o m e t e r h a s h a d a n d will c o n t i n u e t o h a v e on all areas of c h e m i s t r y — t h e ability t o acquire complete s p e c t r a l information on short-lived re action i n t e r m e d i a t e s . T h e a d v a n c e m e n t s in L P D A technology now place t h e analyst in a position t o i n t e r p r e t s t r u c t u r e in t e r m s of t h e resulting spectroscopy.
References (1) Kuwana, T.; Darlington, R.; Leedy, D. Anal. Chem. 1964, 36, 2023-26. (2) Heineman, W. R. Anal. Chem. 1978, 50,390-400 A. (3) Heineman, W. R. J. Chem. Ed. 1983, 60, 305-8. (4) Pinkerton, T. C ; Hajizadeh, K.; Deutsch, E.; Heineman, W. R. Anal. Chem. 1980,52,1542-44. (5) Fritz, M. L.; Durst, R. A. Talanta 1983, 30, 933-39. (6) Rhodes, R. K.; Kadish, Κ. Μ. Anal. Chem. 1981, 53,1539-41. (7) Kadish, K. M.; Rhodes, R. K. Inorg. Chem. 1981,20, 2961-66. (8) Reddy, K.V.S.; Hendler, R. W. J. Biol. Chem. 1983,258, 8568-81. (9) Dessy, R. E.; Reynolds, W. D.; Nunn, W. G.; Titus, C. Α.; Moler, G. F. J. Chromatogr. 1976,126, 347-68. (10) Armstrong, F.; Shaw, R. W.; Beinert, H. Biochim. Biophys. Acta 1983, 722, 61-71. (11) Barber, M. J.; Salerno, J. C. In "Mo lybdenum and Molybdenum-Containing Enzymes"; Coughlar, M. P., Ed.; Pergamon Press: New York, N.Y., 1980; Chap ter 18. (12) Chattopadhyay, K.; Coetzee, J. F. Anal. Chem. 1972,44, 2117-18. (13) Miller, M. L.; Gordon, G. Anal. Chem. 1976,48, 778-79. (14) Hansen, R. E., Update Instruments, personal communication, 1985. (15) Hansen, R. E.; Beinert, H. Anal. Chem. 1966, 38, 484-87. (16) Sturtevant, J. M. In "Rapid Mixing and Sampling Technique in Biochemis try"; Chance, B., Ed.; Academic Press: New York, N.Y., 1964; p. 89. (17) Aiello, P. J.; Enke, C. G. In "Multi channel Image Detectors, Vol. 2"; Talmi, Y., Ed.; ACS: Washington, D.C., 1983; Symposium Series 236, pp. 57-73.
