PHOTOLYTIC RECOVERY OF INORGANIC MERCURY COMPOUNDS AS MERCURY POISONING OR ENVIROMENTAL POLLUTANTS BY COMPLEXATION WITH N-(2-METHYL-PHENYL) 4-NITRO-THIOBENZAMIDE LIGAND

摘要

One mmol of mercury compounds, eg. mercuric oxide, mercuric fluoride and mercuric nitrate, was added to a solution of N-(2-methyl-phenyl)-4-nitro-thiobenzamide (0.273 g, 1 mmol) at ambient temperature for 1 h with stirring and irradiation by a 400W high pressure mercury lamp. The mixture was filtered and pale yellow crystals were separated from the solution and more than 95% of Hg(II) was removed from solution. This chelating process using N-(2-methyl-phenyl) 4-nitro-thiobenzamide ligand shows promise for remediation of mercuric wastes below the Environmental Protection Agency standards as well as potential for recycling of mercury.