Single-indicator-based Multidimensional Sensing: Detection and Identification of Heavy Metal Ions and Understanding the Foundations from Experiment to Simulation

Citations Over TimeTop 10% of 2016 papers

Abstract

Multidimensional sensing offers advantages in accuracy, diversity and capability for the simultaneous detection and discrimination of multiple analytes, however, the previous reports usually require complicated synthesis/fabrication process and/or need a variety of techniques (or instruments) to acquire signals. Therefore, to take full advantages of this concept, simple designs are highly desirable. Herein, a novel concept is conceived to construct multidimensional sensing platforms based on a single indicator that has capability of showing diverse color/fluorescence responses with the addition of different analytes. Through extracting hidden information from these responses, such as red, green and blue (RGB) alterations, a triple-channel-based multidimensional sensing platform could consequently be fabricated, and the RGB alterations are further applicable to standard statistical methods. As a proof-of-concept study, a triple-channel sensing platform is fabricated solely using dithizone with assistance of cetyltrimethylammonium bromide (CTAB) for hyperchromicity and sensitization, which demonstrates superior capabilities in detection and identification of ten common heavy metal ions at their standard concentrations of wastewater-discharge of China. Moreover, this sensing platform exhibits promising applications in semi-quantitative and even quantitative analysis individuals of these heavy metal ions with high sensitivity as well. Finally, density functional theory calculations are performed to reveal the foundations for this analysis.

Related Papers

• → Isotopic dilution analysis by solvent extraction-IIHighly selective determination of zinc with dithizone(1961)20 cited
• → Effects of Different Aqueous Buffers on the Zinc Extractability of Dithizone(1970)2 cited
• → Substoichiometric Determination of Pd-II-Traces with Dithizone and Problems of Determination(1983)2 cited
• → MODIFIED DITHIZONE PROCEDURE FOR THE DETERMINATION OF LEAD IN BEER(1953)
• SERS Study on the Interaction of Dithizone with Silver Substrates(2004)