1. G.C. Bandara, C. Heist, V.T. Remcho, Chromatographic separation and visual detection on wicking microfluidic devices: Quantitation of Cu2+ in surface-, ground-, and drinking water, Anal. Chem., 90(4) (2018) 2594–2600.
  2. S.R. Anand, A. Bhati, D. Saini, Gunture, N. Chauhan, P. Khare, S.K. Sonkar, Antibacterial nitrogen-doped carbon dots as a reversible “fluorescent nanoswitch” and fluorescent ink, ACS Omega, 4 (2019) 1581–1591.
  3. A. Bhati, S.R. Anand, D. Saini, P. Khare, P. Dubey, S.K. Sonkar, Self-doped nontoxic red-emitting Mg-N-embedded carbon dots for imaging, Cu (II) sensing and fluorescent ink, New J. Chem., 42 (2018) 19548–19556.
  4. M. Arora, B. Kiran, S. Rani, A. Rani, B. Kaur, N. Mittal, Heavy metal accumulation in vegetables irrigated with water from different sources, Food Chem., 111 (2008) 811–815.
  5. O.Y. Vasylkiv, O.I. Kubrak, K.B. Storey, V.I. Lushchak, Cytotoxicity of chromium ions may be connected with induction of oxidative stress, Chemosphere, 80 (2010) 1044–1049.
  6. R. Bhatt, R. Bhatt, P. Padmaja, DTPA capped gold and silver nanofluids-facile synthesis and their application as chromium sensors, Sensors Actuators B: Chem., 258 (2018) 602–611.
  7. S. Shahrivari, F. Faridbod, M.R. Ganjali, Highly selective and sensitive colorimetric determination of Cr3+ ion by 4-amino-5-methyl-4H-1, 2, 4-triazole-3-thiol functionalized Au nanoparticles, Spectrochim. Acta Part A: Molec. Biomolec. Spectroscopy, 191 (2018) 189–194.
  8. C. Karami, M.A. Taher, Colorimetric sensor of cobalt ions in aqueous solution using gold nanoparticles modified with glycyrrhizic acid, Plasmonics, 13(4) (2018) 1315–1323.
  9. C. Karami, S.Y. Mehr, E. Deymehkar, M.A. Taher, Naked eye detection of Cr3+ and Co2+ ions by gold nanoparticle modified with azomethine, Plasmonics, 13(2) (2018) 537–544.
  10. E. Deymehkar, M.A. Taher, C. Karami, A. Arman, Synthesis of SPR nanosensor using gold nanoparticles and its application to copper (II) determination, Silicon, 10(4) (2018) 1329–1336.
  11. A. Alizadeh, C. Karami, O. Marvi, B. Bahrami, A. Moradi, M.A. Taher, Modification on the surface of gold nanoparticles with imine formation and cyclo addition reaction, Curr. Org. Chem., 21 (2017) 2502–2508.
  12. C. Karami, A. Alizadeh, M.A. Taher, Z. Hamidi, B. Bahrami, UV-visible spectroscopy detection of iron(III) ion on modified gold nanoparticles with a hydroxamic acid, J. Appl. Spectrosc., 83 (2016) 687–693.
  13. A. Alizadeh, M. Khodaei, C. Karami, M. Workentin, M. Shamsipur, M. Sadeghi, Rapid and selective lead (II) colorimetric sensor based on azacrown ether-functionalized gold nanoparticles, Nanotechnology, 21 (2010) 315503.
  14. A. Sugunan, C. Thanachayanont, J. Dutta, J. Hilborn, Heavymetal ion sensors using chitosan-capped gold nanoparticles, Sci. Technol. Adv. Mater., 6 (2005) 335–340.
  15. B. Li, Y. Du, S. Dong, DNA based gold nanoparticles colorimetric sensors for sensitive and selective detection of Ag (I) ions, Anal. Chim. Acta, 644 (2009) 78–82.
  16. K.A. Rawat, S.K. Kailasa, Visual detection of arginine, histidine and lysine using quercetin-functionalized gold nanoparticles, Microchim. Acta, 181 (2014) 1917–1929.
  17. W. Haiss, N.T. Thanh, J. Aveyard, D.G. Fernig, Determination of size and concentration of gold nanoparticles from UV−Vis spectra, Anal. Chem., 79 (2007) 4215–4221.
  18. Z. Sun, Z. Cui, H. Li, p-Amino benzenesulfonic acid functionalized gold nanoparticles: synthesis, colorimetric detection of carbaryl and mechanism study by zeta potential assays, Sensors Actuators B: Chem., 183 (2013) 297–302.
  19. D. Maity, M. Bhatt, P. Paul, Calix [4] arene functionalized gold nanoparticles for colorimetric and bare-eye detection of iodide in aqueous media and periodate aided enhancement in sensitivity, Microchim. Acta, 182 (2015) 377–384.
  20. M. Shellaiah, T. Simon, K.W. Sun, F.-H. Ko, Simple bare gold nanoparticles for rapid colorimetric detection of Cr3+ ions in aqueous medium with real sample applications, Sensors Actuators B: Chem., 226 (2016) 44–51.
  21. X. Wang, Y. Wei, S. Wang, L. Chen, Red-to-blue colorimetric detection of chromium via Cr(III)-citrate chelating based on Tween 20-stabilized gold nanoparticles, Colloids Surfaces A: Physicochem. Eng. Aspects, 472 (2015) 57–62.
  22. W. Chen, F. Cao, W. Zheng, Y. Tian, Y. Xianyu, P. Xu, W. Zhang, Z. Wang, K. Deng, X. Jiang, Detection of the nanomolar level of total Cr [(III) and (VI)] by functionalized gold nanoparticles and a smartphone with the assistance of theoretical calculation models, Nanoscale, 7 (2015) 2042–2049.
  23. J. Li, J. Du, J. Zhang, Ethylenediaminetetraacetic acid functionalized gold nanoparticles for sensitive colorimetric detection of chromium (III), J. Chin. Chem. Soc., 61 (2014) 1395–1399.
  24. Y. Liu, X. Wang, Colorimetric speciation of Cr(III) and Cr (VI) with a gold nanoparticle probe, Anal. Methods, 5 (2013) 1442–1448.
  25. M. Elavarasi, A. Rajeshwari, N. Chandrasekaran, A. Mukherjee, Simple colorimetric detection of Cr(III) in aqueous solutions by as synthesized citrate capped gold nanoparticles and development of a paper based assay, Anal. Methods, 5 (2013) 6211–6218.
  26. Y.-C. Chen, I.-L. Lee, Y.-M. Sung, S.-P. Wu, Triazole functionalized gold nanoparticles for colorimetric Cr3+ sensing, Sensors Actuators B: Chem., 188 (2013) 354–359.
  27. Y. Zhou, Y.-S. Li, X.-L. Tian, Y.-Y. Zhang, L. Yang, J.-H. Zhang, X.-R. Wang, S.-Y. Lu, H.-L. Ren, Z.-S. Liu, Enhanced ultrasensitive detection of Cr(III) using 5-thio-2-nitrobenzoic acid (TNBA) and horseradish peroxidase (HRP) dually modified gold nanoparticles (AuNPs), Sensors Actuators B: Chem., 161 (2012) 1108–1113.
  28. J. Xin, L. Miao, S. Chen, A. Wu, Colorimetric detection of Cr3+ using tripolyphosphate modified gold nanoparticles in aqueous solutions, Anal. Methods, 4 (2012) 1259–1264.
  29. Y.-J. Lai, W.-L. Tseng, Role of 5-thio-(2-nitrobenzoic acid)-capped gold nanoparticles in the sensing of chromium (VI): remover and sensor, Analyst, 136 (2011) 2712–2717.
  30. Y.-Q. Dang, H.-W. Li, B. Wang, L. Li, Y. Wu, Selective detection of trace Cr3+ in aqueous solution by using 5, 5’-dithiobis (2-nitrobenzoic acid)-modified gold nanoparticles, ACS Appl. Mater. Interf., 1 (2009) 1533–1538.