Rao, S. V.Krishna, M. V. B.Arunachalam, J.2009-05-202009-05-202006http://hdl.handle.net/123456789/12614619 bytestext/htmlenfungal biomassAspergillus nigerGFAAS and FAASpolysilicate matrixCr(III) and Cr(VI)Speciation of Cr in Natural and Wastewaters Using Immobilized Aspergillus niger and Its Determination by GFAAS and FAASArticle