1. Ahmadi, F., Mohammadi, A. K., Heydari, S., Mirzazadeh, M., & Malekpour, E. (2008). Micelle mediated methodology for the determination of heavy metals in real samples by flame atomic absorption spectrometry. Jordan Journal of Chemistry, 3, 77–86.
2. Albertus, F., Cladera, A., Becerra, E., & Cerda, V. (2001). A robust multi-syringe system for process flow analysis. Part3. Time based injection applied to the spectrophotometric determination of Ni(II) and iron speciation. Analyst, 126, 903.
3. Buzica, D., Gerboles, M., Borowiak, A., Trincherini, P., Passarella, R., & Pedroni, V. (2006). Comparison of voltammetry and inductively coupled plasma-mass spectrometry for the determination of heavy metals in PM10 airborne particulate matter. Atmospheric Environment, 40, 4703–4710.
4. Czegan, D. A. C., & Hoover, D. K. (2012). UV–visible spectrometers: versatile instruments across the chemistry curriculum. Journal of Chemical Education, 89, 304–309.
5. Dipak, J., Garole, A. D., & Sawant, A. D. (2005). Extractive spectrophotometric determination of Ni(II) using 4-methyl 2,3-pentanedione dioxime. Journal of Scientific and Industrial Research, 64, 581.