Abstract
Lead ions were coupled to protein carrier bovine serum albumin (BSA) and keyhole limpet hemocyanin (KLH) respectively. Diethylene Triamine Pentacetate Acid (DTPA) was used as bifunctional chelator. Pb-DTPA-Carrier protein, DTPA-Carrier protein and carrier protein were detected qualitatively with ICP-MS, UV spectrophotometer and electrophoresis. It turns out that the Pb-DTPA-Carrier protein contains certain concentration of heavy metal ion, the maximum ultraviolet absorption peak value of Pb-DTPA-Carrier protein significantly higher than that of DTPA-Carrier protein and carrier protein, and the electrophoresis reveals more vague bands of Pb-DTPA-Carrier protein with slower migrations speed comparing to the bands of the DTPA-Carrier protein and carrier protein. The result indicated that the artificial antigen for lead was successfully synthesized.
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