title: Optical fibre chemical sensor for trace vanadium(V) determination based on newly synthesized palm based fatty hydroxamic acid immobilized in polyvinyl chloride membrane.
abstract: Fatty hydroxamic acid (FHA) immobilized in polyvinyl chloride (PVC) has been studied as a sensor element of an optical fibre chemical sensor for V(V). By using this instrument, V(V) in solution has been determined in the log concentration range of 0-2.5 (i.e. 1.0-300 mg/L). The detection limit was 1.0 mg/L. The relative standard deviation (R.S.D.) of the method for the reproducibility study at V(V) concentration of 200 mg/L and 300 mg/L were calculated to be 2.9% and 2.0%, respectively. Interference from foreign ions was also studied at 1:1 mole ratio of V(V):foreign ions. It was found that, Fe(III) ion interfered most in the determination of vanadium(V). Excellent agreement with ICP-AES method was achieved when the proposed method was applied towards determination of V(V).
authors.affiliation: Department of Chemistry, Faculty of Science and Environmental Studies, 43400 Universiti Putra Malaysia Serdang, Selangor D.E., Malaysia.
authors.forename: Azizul
authors.initials: A
authors.lastname: Isha
authors.forename: Nor Azah
authors.initials: NA
authors.lastname: Yusof
authors.forename: Musa
authors.initials: M
authors.lastname: Ahmad
authors.forename: Dedy
authors.initials: D
authors.lastname: Suhendra
authors.forename: Wan Md Zin Wan
authors.initials: WM
authors.lastname: Yunus
authors.forename: Zulkarnain
authors.initials: Z
authors.lastname: Zainal
mesh_terms: D028023:Arecaceae / Q000737:chemistry*; D005336:Fiber Optic Technology / Q000295:instrumentation*; D006877:Hydroxamic Acids / Q000138:chemical synthesis* / Q000737:chemistry; D008567:Membranes, Artificial; D011143:Polyvinyl Chloride / Q000737:chemistry*; D013997:Time Factors; D014639:Vanadium / Q000032:analysis*
chemical_list: D006877:Hydroxamic Acids; D008567:Membranes, Artificial; D014639:Vanadium; D011143:Polyvinyl Chloride