Focus horizontal axis. "I think the combination of an échelle spectrometer with the right type of solid-state camera device is going to make a dramatic impact on the future of analytical atomic spectrometry, and, of course, on molecular spectrometry as well," Denton predicted. The most important advantage of such an instrument would be its capacity to detect a large number of spectral lines simultaneously. A number of investigations involving systems of this type have already been reported, such as: ANALYTICAL C H E M I S T R Y , 1977,49,1112-1120;
Speakers at the symposium "New Directions in Analytical Chemistry" responding to questions from the audience. From left, Richard Van Duyne, Bonner Denton, Calvin Giddings, Bruce Kowalski, and Allen Bard of solid-state imaging devices, such as photodiode arrays, charge-coupled devices, and charge-injection devices, are being applied to the electronic processing of spectral information. Denton pointed out that to use such "xy" or "camera" devices, one needs to
have the spectral data formatted in two dimensions. One approach is to use an échelle spectrometer, which presents a spectrum as a two-dimensional pattern, with the grating orders observed in a vertical direction and the wavelengths varying across the
1978,50, 602-610; and 1980, 52, 916920; and Applied Spectroscopy, 1976, 30, 113-123. Denton predicted movement to techniques in which little or no sample preparation is necessary, or in which sample preparation is performed in an automated manner. One instance of this is the switch from the conventional Bernoulli principle small capillary nebulizer, which does not handle viscous samples well, to the Babington type of nebulizer, which can handle anything from motor oil to tomato sauce. Denton also saw continued progress in hyphenated techniques,
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