Water pollution by toxic metal ions is a worldwide environmental and health problem, and therefore monitoring of toxic metal ions in water resources is highly desired. In this chapter, we describe a simple colorimetric sensor array for simultaneous detection of multiple toxic heavy metal ions (Hg2+, Cd2+, Fe3+, Pb2+, Al3+, Cu2+, and Cr3+) in water. This assay is produced by using 11-mercaptoundecanoic acid (MUA)-capped gold nanoparticles (AuNPs) and five amino acids (lysine, cysteine, histidine, tyrosine, and arginine). The presence of amino acids can enhance or diminish the aggregation MUA-capped AuNPs with metal ions. The color change of the sensor array after aggregation in some of the channels creates unique response patterns for each metal ion.
CITATION STYLE
Şener, G., & Denizli, A. (2019). Identification of Several Toxic Metal Ions Using a Colorimetric Sensor Array. In Methods in Molecular Biology (Vol. 2027, pp. 81–86). Humana Press Inc. https://doi.org/10.1007/978-1-4939-9616-2_7
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