Colorimetric Sensor Array for Detection of Iron(II) Ion

Sensor array methodology had attracted much attention because of its advantages in accuracy, diversity and capacities in simultaneous detection and discrimination of multiple analytes. In this study, a colorimetric sensor array comprising chloroauric acid and L-arginine mixture for the detection and identification of iron (II) ion is developed. Principal component analysis and hierarchical cluster analysis showed that the colorimetric sensor array had excellent discrimination capability to iron (II) ion. This research suggests that chloroauric acid and L-arginine mixture could act as cations chemosensor, which provides an alternative approach to design novel colorimetric sensor array.