[1] Univ Malaya, Fac Sci, Dept Geol, Kuala Lumpur 50603, Malaysia
[2] Univ Malaya, Fac Sci, Dept Chem, Kuala Lumpur 50603, Malaysia
[3] Univ Agr Faisalabad, Fac Vet Sci, Inst Pharm Physiol & Pharmacol, Faisalabad 38040, Pakistan
[4] Univ Malaysia Sabah, Fac Sci & Nat Resources, Kota Kinabalu 88400, Sabah, Malaysia
[5] China Univ Geosci, Sch Environm Studies, Dept Environm Sci & Engn, Wuhan 430074, Peoples R China