Spectrophotometric Determination of Silver (I) With 2-Hydroxy-5-(5-(4-Methoxy-3-Nitrophenyl)-1,3,4-Thiadiazol-2-yl) Diazenyl) Benzoic Acid (HMNTDABA) as a Nano Organic Reagent
نویسندگان
1 Department of Chemistry, College of Education, University of Al-Qadisiyah, Diwaniyah, Iraq
2 Department of Chemistry, College of Education, University of Al-Qadisiyah, Diwaniyah, Iraq
doi
10.22052/JNS.2025.03.010چکیده
This study proposed the use of a sensitive and selective spectroscopic method for the determination of silver (I) using the novel nano azo reagent 2-hydroxy-5-(5-(4-methoxy-3-nitrophenyl)-1,3,4-thiadiazol-2-yl)diazenyl) benzoic acid (HMNTDABA) as a spectroscopic nano reagent. The nano reagent was synthesized and characterized by using UV-Vis. spectroscopy, fourier transform infrared spectroscopy (FTIR), 1H-NMR spectroscopy, X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) and Elemental Analysis (CHNS). The reaction between the synthesized nano reagent and the silver (I) takes place instantaneously when λmax is 563 nm and solution pH is 8. The prepared nano reagent results in the formation of the complex with D.L = 0.085ppm, S.D and R.S.D. of 0.001 and 0.14% respectively. The obtained recovery range (%R) was 99.965%. The stability constant of the prepared 1:1 [metal: reagent] of Ag(I) complex was 0.5 × 10-6 L mol-1. The linear range was found to be between 1 and 80 ppm. The primary interferences were primarily due to the presence of Fe2+, Ni2+, Zn2+, Pb2+, Cu2+, and Cd2+ ions. To address these interferences, appropriate masking agents were employed.
