A novel polymer inclusion membranes based optode for sensitive determination of Al³⁺ ions.
A novel approach for the determination of Al(3+) from aqueous samples was developed using an optode membrane produced by physical inclusion of Al(3+) selective reagent, which is morin into a plasticized poly(vinyl chloride). The inclusion of Triton X-100 was found to be valuable and useful for enhancing the sorption of Al(3+) ions from liquid phase into the membrane phase, thus increasing the intensity of optode's absorption. The optode showed a linear increase in the absorbance at λ(max)=425 nm over the concentration range of 1.85×10(-6)-1.1×10(-4) mol L(-1) (0.05-3 μg mL(-1)) of Al(3+) ions in aqueous solution after 5 min. The limit of detection was determined to be 1.04×10(-6) mol L(-1) (0.028 μg mL(-1)). The optode developed in the present work was easily prepared and found to be stable, has good mechanical strength, sensitive and reusable. In addition, the optode was tested for Al(3+) determination in lake water, river water and pharmaceutical samples, which the result was satisfactory.
School of Chemical Sciences, Universiti Sains Malaysia (USM), 11800 Minden, Pulau Pinang, Malaysia; School of Chemical Sciences & Food Technology, Faculty of Science & Technology, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, Malaysia. Electronic address: fsuah@usm.my.
Faiz Bukhari Mohd
FB
Suah
School of Chemical Sciences & Food Technology, Faculty of Science & Technology, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, Malaysia; Faculty of Science & Technology, Universiti Sains Islam Malaysia (USIM), Bandar Baru Nilai, 71800 Nilai, Negeri Sembilan, Malaysia.
Musa
M
Ahmad
School of Chemical Sciences & Food Technology, Faculty of Science & Technology, Universiti Kebangsaan Malaysia (UKM), 43600 Bangi, Selangor, Malaysia.
Lee Yook
LY
Heng
D000535:Aluminum / Q000032:analysis*; D005419:Flavonoids; D006863:Hydrogen-Ion Concentration; D007477:Ions; D007700:Kinetics; D008567:Membranes, Artificial; D055095:Optics and Photonics; D004364:Pharmaceutical Preparations / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D059027:Recycling; D015203:Reproducibility of Results; D012996:Solutions; D013057:Spectrum Analysis; D013997:Time Factors; D014874:Water Pollutants, Chemical / Q000032:analysis; D047309:Flavones
D000535:Aluminum; D005419:Flavonoids; D007477:Ions; D008567:Membranes, Artificial; D004364:Pharmaceutical Preparations; D011108:Polymers; D012996:Solutions; D014874:Water Pollutants, Chemical; C008548:morin; D047309:Flavones
Al(3+) determination; Morin; Optode; Polymer inclusion membrane; Triton X-100