Bray, Barbara, Darlow, Michael (1) Abdulghani, Hamza Mohammad (king Saud Univ, Ponnamperuma, Gominda (univ Of Colombo, Amin, Zubair (nus (1) Unger, Craig (1) Saravanan, R (department Of Chemistry College Of Science King Saud University Riyadh Saudi Arabia) (1) Al-wardi, Ali (1)