FLUORESCENCE AND SERS DETECTION METHOD OF THE Hg? CONCENTRATION IN AN AQUEOUS SOLUTION USING Au NANOCOLLOIDAL PARTICLES

摘要

PURPOSE: A fluorescence and SERS detection method of Hg(II) concentration on gold nanocolloid surface is provided to detect Hg ion of low concentration. CONSTITUTION: A method for measuring Hg(II) concentration of an aqueous solution comprises: a step of binding an organic fluorescence dye and obtaining SERS spectrum of the organic fluorescence dye; a step of adding Hg(II) in the aqueous solution to the gold nanoparticles and obtaining SERS spectrum of the organic fluorescence dye; and a step of comparing two SERS spectrum intensity. The organic fluorescence dye is rhodamine 6G or rhodamine 123.