Instrumentation for 7-day continuous cycle monitoring of metals with automated on-line sample preparation, high performance liquid chromatography, and electrochemical detection
High-performance liquid chromatography with electro-chemical detection (HPLCEC) has become well accepted as a sensitive method for determining a wide variety of organic and inorganic compounds. In these laboratories, the authors have been interested in developing analytical methods for trace metal determinations of metals such as Cu, Ni, Cr(III), Cr(VI), Mn, Fe, Co, Hg, and Pb by the HPLCES method in industrial effluents. However, the instrumentation developed in these earlier studies has not been fully automated as required for long-term monitoring. This paper describes the design of a new completely automated HPLEC system for on-line monitoring.