%0 Journal Article
%T An Optical Chemical Sensor For Determination of Nickel in Water and Hydrogen Peroxide Samples - An Optical Chemical Sensor For Determination of Nickel in Water and Hydrogen Peroxide Samples - Open Access Pub
%A Akram Sadat Nabavi
%A Saeed Babaee
%A Shahram Ghanbari Pakdehi
%J OAP | Home | Journal of New Developments in Chemistry | Open Access Pub
%D 2018
%X Application of nickel in different industries has been developed and so contamination of natural water is a great concern due to its potentially toxic effects on living beings. Therefore, fast monitoring of Ni2+ in aqueous samples is important. In this work, we fabricated a sensitive optical sensor for determination of nickel in mineral water samples and hydrogen peroxide solutions. The optode was prepared by incorporation of 1-(2-pyridylazo)-2-naphthol and sodium tetraphenylborate in a plasticized poly (vinyl chloride) membranes containing dioctyladipate as a plasticizer. The influence of several parameters such as pH, base matrix, solvent mediator and ligand concentration were optimized. Comparison the obtained results with previously reported sensors revealed that the proposed method, in addition to fast and simplicity, provided good linear range (1.70¨C85.20 ¦̀mol L-1) and low detection limit (0.17 ¦̀mol L-1). The precision (relative standard deviation) was better than 1.55% for 7 replicate determinations of 17.10 ¦̀mol L-1 of Ni in various membranes. DOI10.14302/issn.2377-2549.jndc-16-1212 Nowadays, the pollution of natural water by heavy metals is a great concern due to their potentially toxic effects on living beings, therefore the detection and monitoring of toxic metals in water samples is necessary and very important 1. Due to wide applications of nickel in different industries 2, 3, 4, 5, 6, its contamination of natural water leads to serious environmental hazards. Nickel and some its compounds can cause an allergic reaction, asthma, lung cancer and leukemia in human body originates 7, 8, 9, 10. Amount of nickel should not be more than 1.70 ¦̀mol L-1 in drinking water resources 11. Hydrogen peroxide is used as a disinfectant, oxidizer and so forth in usual applications 12. High concentration of hydrogen peroxide can be used either as a monopropellant or as an oxidizer for military applications 13. If cationic impurities exist in commercial grade of hydrogen peroxide solutions, its purification to military grade (over 85%) can cause to explosion. So nickel concentration in commercial H2O2 solutions must be lower than 0.68 ¦̀mol L-114. Because of oxidation medium or presence of oxygen bubbles in H2O2 solutions, it is difficult to direct determining any ions before initial pretreatments. Therefore, it is important to develop a safe, selective and sensitive technique for the rapid measurement of Ni2+ in different media. Determination of nickel is performed by several techniques such as x-ray absorption spectroscopy 15, flame and electro thermal atomic
%U https://www.openaccesspub.org/jndc/article/357