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J.C. Shields (Ohio U.), R.W. Pogge (Ohio State U.), M.M. De Robertis (York U.)
Emission lines that trace elements subject to strong depletion onto grains provide a means for probing the dust content of AGNs. Infrared [Fe\,{\sc ii}] features are of potential use for this purpose, but have inspired considerable controversy in the past. We will examine the use of optical [Ca\,{\sc ii}] emission as an alternative diagnostic that can be compared with the [Fe\,{\sc ii}] results. Preliminary findings for NGC\,1068 will be presented.