caa a22 4500 467996261 CHVBK 20180323112558.0 cr unu---uuuuu 170328e19900101xx s 000 0 eng 10.1007/BF01244503 doi (NATIONALLICENCE)springer-10.1007/BF01244503 Selective and sensitive extraction spectrophotometric method for the determination of vanadium (V) as a mixed ligand complex with N -phenyl benzohydroxamic acid and 4-(2-pyridylazo)resorcinol in non-aqueous media [Elektronische Daten] [Yerramilli Anjaneyulu, Manda Reddy, Patti Kumar, Chandra Kavipurapu, Bevara Rao] A selective, sensitive and direct method for the spectrophotometric determination of vanadium in steels is developed in which vanadium is extracted withN-phenyl benzohydroxamic acid (PBHA) into chloroform from 5M hydrochloric acid medium followed by colour development by addition of 4-(2-pyridylazo)resorcinol (PAR) inN,N-dimethyl formamide (DMF). The vanadium(V)-PBHA-PAR mixed ligand complex shows maximum absorbance at 560 nm with a molar absorptivity 3.6 × 104 l mol−1 cm−1 and obeys Beer's law up to 2.0 μg/ml of vanadium. The composition of the mixed ligand complex is determined by Job's method of continuous variations which revealed a 1 ∶ 1 ∶ 1 ratio for V(V) ∶ PBHA ∶ PAR. This method can be directly applied for the determination of vanadium in steels, while in the case of titanium base alloys, after separation of titanium matrix it gives good results even at 50-200 μg of vanadium per gram level. Springer-Verlag, 1990 extraction nationallicence spectrophotometric determination nationallicence vanadium(V) nationallicence PBHA nationallicence PAR nationallicence non-aqueous media nationallicence Anjaneyulu Yerramilli Department of Chemistry, Nagarjuna University, 522 510, Nagarjuna Nagar, India aut Reddy Manda Department of Chemistry, Nagarjuna University, 522 510, Nagarjuna Nagar, India aut Kumar Patti Department of Chemistry, Nagarjuna University, 522 510, Nagarjuna Nagar, India aut Kavipurapu Chandra Department of Chemistry, Nagarjuna University, 522 510, Nagarjuna Nagar, India aut Rao Bevara Rare Earth Metals and Alloys Group, Defence Metallurgical Research Laboratory, 500 258, Kanchanbagh, Hyderabad, India aut Microchimica Acta Springer-Verlag 100/1-2(1990-01-01), 87-94 0026-3672 100:1-2<87 1990 100 604 https://doi.org/10.1007/BF01244503 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01244503 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Anjaneyulu Yerramilli Department of Chemistry, Nagarjuna University, 522 510, Nagarjuna Nagar, India aut NATIONALLICENCE 700 1- Reddy Manda Department of Chemistry, Nagarjuna University, 522 510, Nagarjuna Nagar, India aut NATIONALLICENCE 700 1- Kumar Patti Department of Chemistry, Nagarjuna University, 522 510, Nagarjuna Nagar, India aut NATIONALLICENCE 700 1- Kavipurapu Chandra Department of Chemistry, Nagarjuna University, 522 510, Nagarjuna Nagar, India aut NATIONALLICENCE 700 1- Rao Bevara Rare Earth Metals and Alloys Group, Defence Metallurgical Research Laboratory, 500 258, Kanchanbagh, Hyderabad, India aut NATIONALLICENCE 773 0- Microchimica Acta Springer-Verlag 100/1-2(1990-01-01), 87-94 0026-3672 100:1-2<87 1990 100 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer