Highly Selective Detection of Trace Copper(II) Using Bathocuproinesulfonate by Flow-Injection Electrospray Ionization Mass Spectrometry

Masanobu MORI, Keiko MISAWA, Hideyuki ITABASHI
2014 Analytical Sciences  
Trace Cu 2+ was detected with high selectivity using specific complexation with bathocuproinesulfonate (BCS) through flow-injection electrospray ionization mass spectrometry (FI-ESI-MS), which separates Cu 2+ from coexisting metal ions by forming a Cu-BCS complex with a high mass number. Here, only [Cu I (BCS)2] 3was obtained with a high ion count. Its calibration curve was linear from 1.0 × 10 -8 to 1.0 × 10 -5 M. This method was applied to determine the Cu-complexing capacities of humic acid
more » ... olution and river water samples by adding traces of Cu 2+ .
doi:10.2116/analsci.30.1173 pmid:25492468 fatcat:mkvwk6dnkjayxlv2iepo6qcn5m