Determination of trace amounts of copper using a flow-through spectrophotometric sensor

Abstract

A flow-through spectrophotometric sensor for determination of copper based on retention of Cu(I)-1,2 ciclohexanedione thiosemicarbazone complex on C18 bonded phase beads packed in a flow-cell was developed. The method is highly selective for copper; it features a detection limit of 50 ng mL−1 and a linear range from at least 0.1 to 10 μg mL−1. The method is subject to very few interferences and is more sensitive than the batch procedure. The proposed method was applied to the determination of copper in catalysts and alloys. © 2000 John Wiley & Sons, Inc. Lab Robotics and Automation 12:241–245, 2000