HNU Systems, Inc. - Analytical Chemistry (ACS Publications)

May 25, 2012 - HNU Systems, Inc. Anal. Chem. , 1979, 51 (7), pp 789A–789A. DOI: 10.1021/ac50043a817. Publication Date: June 1979. ACS Legacy Archive...
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s e n s i n g a p p l i c a t i o n s w h e r e images c o m e from s p a c e c r a f t p r o b e s a n d e a r t h s a t e l l i t e s . W e e x p e c t t h a t image a n a l y s i s will b e c o m e a s t a n d a r d tool of t h e a n a l y t i c a l chemist, in t h e f u t u r e as m o r e t y p e s of a n a l y t i c a l i n s t r u m e n t a ­ t i o n a r e d e v e l o p e d or modified t o p r o ­ d u c e h i g h e r - d i m e n s i o n a l images.

References ( 1 ) " H a r p e r Encyclopedia of Science." (2) M. Havvitt, Appl. Opt., 10, 1415 (1971 ). Ci) J . A. Decker, J r . , ibid., 9, 1392(1970). (4) J . A. Decker, -Jr., Anal. Chem.. 44, 127A (1972). (5) 1. M. W a r n e r . E. H. Davidson, a n d G. D. C h r i s t i a n , ibid., 49, 2155 (1977). (β) C. N . H o , G. D. C h r i s t i a n , a n d Ε. Η. Davidson, ibid., 50, 1 108 (1978). (7) G. H. Morrison a n d G. Slodzian, ibid., 47, 932A (1975). (8) -J. D. F a s s e t t , J . K. R o t h , a n d G. H. Morrison, ibid., 49, 2322 (1977). (9) R. Bracewell. " T h e Fourier T r a n s f o r m a n d Its A p p l i c a t i o n s . " 2nd éd., M c G r a w Hill, N e w York, N.Y., 1978. (10) "Digital Image Processing," H a r r y C. A n d r e w s , Ed., I E E E C o m p u t e r Society, 1978. (11) A. Rosenfeld a n d A. K a k , "Digital P i c t u r e Processing," Academic P r e s s , New York. N.Y., 1976. (12) B. R. Kowalski, Anal. Chem., 47, 1152A (1975). (13) "Digital Image P r o c e s s i n g , " H a r r y C. A n d r e w s , Ed., I E E E C o m p u t e r Society, 1978. (14) L. G. R o b e r t s , " M a c h i n e P e r c e p t i o n of T h r e e Dimensional Solids," in " O p t i cal a n d Klectrooptical Information P r o cessing," J . T . T i p p e t et al., E d s . ρ 159, M I T Press, C a m b r i d g e , Mass., 1965. (15) J . D. Fassett a n d G. H . Morrison, Anal. Chem., 50, 1861 (1978). ( 16) J . W . Coolev a n d ,). W . T u k e v , Math. Camp., 19,297 (1965). (17) J . D. Fassett, J . R. Roth, a n d G. H. Morrison, Anal. Chem.. 49, 2322 (1977).

Mark G. Moran is a graduate student in the Department of Chemistry at the University of Washington. His re­ search interests include newer meth­ ods of analysis of chemical data, of experimental design, and of mass spectrometry. Mr. Moran is support­ ed with a research assistantship from the Office of Naval Research.

Free GC Manual Applications of the Photoionization Detector In Gas Chromatography. • Analyses of drugs and pesticides at 10X below conventional detectors • Capillary column analyses at 100X below other detectors • Environmental and industrial hygiene determinations including V.C.. TEL, PAH's, H2S, CS 2 , and other organic sulfurs

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The LC Detection S y s t e m with α mind... ...not α mind of its own. N o w — u s i n g a Schoeffel variable w a v e ­ length absorption detector, y o u c a n stop the f l o w in y o u r LC system and scan t h e spectrum for positive identification of an eluted fraction. W i t h o u t having to w o r r y about baseline variations. W i t h ­ out s p e n d i n g v a l u a b l e time c o r r e c t i n g for solvent and b a c k g r o u n d absorbance. Because of the m i n d : Schoeffel's M M 7 0 0 M e m o r y M o d u l e makes absor­ bance p r o f i l i n g ('fingerprinting') a snap. Solvent and b a c k g r o u n d absorbance

are automatically r e m o v e d f r o m sample analysis. For fast, simple, m o r e accurate qualitative determinations. Also useful in gradient elutions. Best of a l l , the M M 7 0 0 is used w i t h Schoeffel's UV-VIS absorption detector — t h e SF 7 7 0 Spectroflow M o n i t o r — w i t h motorized wavelength drive. A n industry standard since its i n t r o d u c t i o n in 1 9 7 3 . W r i t e for o u r b r a n d n e w litera­ t u r e — o r p h o n e us for a d e m o n s t r a t i o n .

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SCHOEFFEL

ANALYTICAL

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V O L . 5 1 , N O . 7, JUNE

DIVISION 1979 ·

789 A