1. Adams TK, Sadam N, Steiner F, Schaffner W, Freedman JH (2002) Activation of gene expression by metal-responsive signal transduction pathways. Environmental Health Perspect 110: 813–817.
2. Al-Rajhi MA, Al-Sayeb SM, Seaward MRD, Edwards HMG (1996) Particle size effect for metal pollution analysis of atmospherically deposited dust. Atmos Environ 30: 145–153
3. Anonymous (1979) National research council, air borne particles, Baltimore: University Park Press, pp. 979.
4. Anonymous (2001a) State of Knowledge Report: Air toxics and indoor air quality in door air quality in Australia. Environment Australia, ISBN 0642547394, Chapter 1, pp. 1–49.
5. Anonymous (2002) Chrome tan powder (CAS No 12336-95-7, EC No235-595-8, Document No SDS-21 Issue 005 (30/06/2002)
http://www.elementischromium.com/
pdf/045105sds-021.pdf. accessed 4th May 2005