Trace elements, especially heavy metals, are considered to be one of the main sources of pollutiomn of foods and plants. OBJECTIVES:BJECTIVES:1- To determine Pb traces in the samples of beverages; collected from the local market of Egypt; one of EMR counteries; using two techniques, the differential pulse anodic stripping voltammetry (DPASV) at a hanging mercury drop electrode and atomic absorption ... إقراء المزيد