Determination of chromium (III) ions in water samples by UV–vis spectrometry based on benzyl-functionalized benzimidazolylidene ligand

Content Provider	Semantic Scholar
Author	Yan, Zhenning Jiang, Ling Xu, Cuiying Liu, Jian-Ming
Copyright Year	2018
Abstract	Chromium is one of the most notorious environmental pollutants. The development of a sensitive and selective chromium detection method is an important issue. In this paper, cation recognition properties of two benzyl-functionalized benzimidazolylidene ligands towards metal ions were investigated by UV–vis spectrophotometry. The results showed that the receptors had a higher selection of Cr 3+ . The important analytical parameters, such as pH, quantity of the reagents, and their effects on the studied system were investigated. Under the optimum conditions the absorbance of the Cr 3+ -L complex obeys Beer9s law in the Cr 3+ concentration range of 0.05–2.60 μg/mL with the limit of detection of 0.026 and 0.034 μg/mL for L1 and L2, respectively. IR spectrum and DFT calculations were used to explore the coordinating sites and the complex strength of two ligands towards Cr 3+ . The thermodynamic parameters showed that complex formation is a spontaneous exothermic process. The proposed method was successfully applied to the determination of Cr 3+ content in water and alloy samples. The proposed method is seen as a simple and effective way of determining Cr 3+ concentration.
Starting Page	2081
Ending Page	2091
Page Count	11
File Format	PDF HTM / HTML
DOI	10.2166/ws.2018.032
Volume Number	18
Alternate Webpage(s)	https://watermark.silverchair.com/ws018062081.pdf?token=AQECAHi208BE49Ooan9kkhW_Ercy7Dm3ZL_9Cf3qfKAc485ysgAAAhwwggIYBgkqhkiG9w0BBwagggIJMIICBQIBADCCAf4GCSqGSIb3DQEHATAeBglghkgBZQMEAS4wEQQMcfdA8MTigocOB1uLAgEQgIIBz5TSky56hUVFQCGOWYJ7hlJfByM1-SauNmH_mPUQqeABVawaf4vDMcFW3_0KWpRgQfUHf1g3AhtqxJOby0_FTlkFelKBySYK0GjqJ-UICrrekO-oB6tFEiViJrAUytF7kpcGQD8QOmEiWdvGUs_CHx77Hs_rz5pLxbqTWzpEsI_2PiRX3_lZWcIP8Y3EuAxeokqIi6KC_FE09RjUPF-PqeOrW-pwd_Fu2T8FCXpqiJoreF3cxOw6pBYt4BHAREGXjA7b1_irrO-hL6EeoYFoilAFOqPq_vrJw3E3X0i8XYrOJiqDCRg7hEZtg7Ok4Xpaeh4Uqxqetdie7-wBW3WFDM7eqt475gCpgUYGCFo-3bpnbui0nlAfdl-vX6JZeoxhXwVmeCEYR-NZmyA6IFS9_LugWDLGysqvXiAmfKAL8juCAivxW1-84I51IrFliGj77wgxz-_sYerCCWexNFWqZv1K-y2jbpYKV0vfyeqkb3nrOgyAmgtyL6tgL9TRg5fYUhkI6jOtaoj9d6JAKlgvq-pvZdXe5U31_hEzSLryxhYSPr973U1mebrZlP_QMyGzD5JeBtHBhDY7tZHE67iwpmek_FJZPKfJZiTWw7No2XQ
Alternate Webpage(s)	https://doi.org/10.2166/ws.2018.032
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article