Export Date: 30 November 2011, Source: Scopus, Language of Original Document: English, Correspondence Address: Chalapathi, P. V.; Department of Chemistry, Sri Venkateswara Arts College(TTD), Tirupathi, A.P., India, Chemicals/CAS: brass, 12597-71-6; hydrogen peroxide, 7722-84-1, References: Judith, T.Z., Peter, T., Thomas, T., Immunotoxicology of environment occupational metals (1998), School of Environment Occupational Metals, School of Medicine, New YorkSharma, B.K., Environmental Chemistry (1997), Goel Publishing House, Meerut, IndiaMalvankar, P.L., Shinde, V.M., (1991) Analyst, 116, p. 1084;