Simultaneous determination of Cu, Cd and Pb in drinking-water using W-coilAAS

An inexpensive, multi-element, W-coil atomic absorption spectrometer has be en developed. Atomization occurs on W-coils extracted from commercially ava ilable slide projector bulbs. The system has minimal power requirements, 12 0 ACV and 15 A. A small, computer controlled CCD spectrometer is used as th e detector. A multi-element Cu, Cd and Pb hollow cathode lamp is used as th e source. 20 mu l volumes are deposited on the coil and atomized at 6.7 A o r approximately 2200 degrees C. Cu. Cd and Pb were simultaneously determine d in tap water, drinking water and a quality control sample. The instrument detection limits are 0.8, 0.2 and 3.0 mu g/l for Cu, Cd and Pb, respective ly. (C) 1999 Elsevier Science B.V. All rights reserved.