sample cell. This eliminates the separate cell and simplifies the test procedure,
which improves accuracy. The multilingual eXact iDip® app system also allows for
instantaneous software updates/upgrades, test customization, and mobile sharing of
results with spreadsheet [44].
6 Summary
In summary, this chapter focussed on the potential use of colorimetric sensors for
the water-pollutant sensing and discusses the promising prospects of sensor
developments (from choice of material to read-out tools) to assist nascent
researchers to review the principles, mechanistic and advancements in existing
trends in colorimetric sensory probes. In this direction, smartphone-based colorimetric sensor platforms aim to empower easier and more resourceful
water-pollutant testing in resource-limited locales, which accords with the important goal of field-deployable sensory systems. The adept features of smartphones
namely, concept of miniaturization, ease-of-operation and portability recommend
great prospective for their operative integration with sensory probes in the direction
of facilitating a wide range of new mobile-based pollutant sensing applications.
References
1. Rasheed, T., et al. (2019). Self-assembly of alternating copolymer vesicles for the highly
selective, sensitive and visual detection and quantification of aqueous Hg
2+ . Chemical
Engineering Journal, 358, 101–109.
2. Madhupriya, S., & Elango, K. P. (2012). Highly selective colorimetric sensing of Cu (II) ions
in aqueous solution via modulation of intramolecular charge transfer transition of
aminonaphthoquinone chemosensor. Spectrochimica Acta Part A: Molecular and
Biomolecular Spectroscopy, 97, 100–104.
3. Li, Y., et al. (2011). Novel hemicyanine dye as colorimetric and fluorometric dual-modal
chemosensor for mercury in water. Organic & Biomolecular Chemistry, 9(8), 2606–2609.
4. Petdum, A., et al. (2018). Colorimetric and fluorescent sensing of a new FRET system via [5]
helicene and rhodamine 6G for Hg
2+ detection. New Journal of Chemistry, 42(2), 1396–1402.
5. Das, S., et al. (2016). FRET-based fluorescence ratiometric and colorimetric sensor to
discriminate Fe
3+ from Fe
2+ . New Journal of Chemistry, 40(7), 6414–6420.
6. Annadhasan, M., et al. (2014). Green synthesized silver and gold nanoparticles for
colorimetric detection of Hg
2+ , Pb
2+ , and Mn
2+ in aqueous medium. ACS Sustainable
Chemistry & Engineering, 2(4), 887–896.
7. Chen, L., et al. (2019). Novel colorimetric method for simultaneous detection and
identification of multimetal ions in water: Sensitivity, selectivity, and recognition mechanism.
ACS Omega, 4(3), 5915–5922.
8. Pramanik, K., Sarkar, P., & Bhattacharyay, D. (2019). Semi-quantitative colorimetric and
supersensitive electrochemical sensors for mercury using rhodamine b hydrazide thio
derivative. Journal of Molecular Liquids, 276, 141–152.
9. Zhang, Y., et al. (2019). A sensitive near-infrared fluorescent probe for detecting heavy metal
Ag
+ in water samples. Sensors, 19(2).
Materials in Colorimetric Detection of Water Pollutants
143
which improves accuracy. The multilingual eXact iDip® app system also allows for
instantaneous software updates/upgrades, test customization, and mobile sharing of
results with spreadsheet [44].
6 Summary
In summary, this chapter focussed on the potential use of colorimetric sensors for
the water-pollutant sensing and discusses the promising prospects of sensor
developments (from choice of material to read-out tools) to assist nascent
researchers to review the principles, mechanistic and advancements in existing
trends in colorimetric sensory probes. In this direction, smartphone-based colorimetric sensor platforms aim to empower easier and more resourceful
water-pollutant testing in resource-limited locales, which accords with the important goal of field-deployable sensory systems. The adept features of smartphones
namely, concept of miniaturization, ease-of-operation and portability recommend
great prospective for their operative integration with sensory probes in the direction
of facilitating a wide range of new mobile-based pollutant sensing applications.
References
1. Rasheed, T., et al. (2019). Self-assembly of alternating copolymer vesicles for the highly
selective, sensitive and visual detection and quantification of aqueous Hg
2+ . Chemical
Engineering Journal, 358, 101–109.
2. Madhupriya, S., & Elango, K. P. (2012). Highly selective colorimetric sensing of Cu (II) ions
in aqueous solution via modulation of intramolecular charge transfer transition of
aminonaphthoquinone chemosensor. Spectrochimica Acta Part A: Molecular and
Biomolecular Spectroscopy, 97, 100–104.
3. Li, Y., et al. (2011). Novel hemicyanine dye as colorimetric and fluorometric dual-modal
chemosensor for mercury in water. Organic & Biomolecular Chemistry, 9(8), 2606–2609.
4. Petdum, A., et al. (2018). Colorimetric and fluorescent sensing of a new FRET system via [5]
helicene and rhodamine 6G for Hg
2+ detection. New Journal of Chemistry, 42(2), 1396–1402.
5. Das, S., et al. (2016). FRET-based fluorescence ratiometric and colorimetric sensor to
discriminate Fe
3+ from Fe
2+ . New Journal of Chemistry, 40(7), 6414–6420.
6. Annadhasan, M., et al. (2014). Green synthesized silver and gold nanoparticles for
colorimetric detection of Hg
2+ , Pb
2+ , and Mn
2+ in aqueous medium. ACS Sustainable
Chemistry & Engineering, 2(4), 887–896.
7. Chen, L., et al. (2019). Novel colorimetric method for simultaneous detection and
identification of multimetal ions in water: Sensitivity, selectivity, and recognition mechanism.
ACS Omega, 4(3), 5915–5922.
8. Pramanik, K., Sarkar, P., & Bhattacharyay, D. (2019). Semi-quantitative colorimetric and
supersensitive electrochemical sensors for mercury using rhodamine b hydrazide thio
derivative. Journal of Molecular Liquids, 276, 141–152.
9. Zhang, Y., et al. (2019). A sensitive near-infrared fluorescent probe for detecting heavy metal
Ag
+ in water samples. Sensors, 19(2).
Materials in Colorimetric Detection of Water Pollutants
143