Sains Malaysiana 45(12)(2016): 1807–1814

http://dx.doi.org/10.17576/jsm-2016-4512-04

 

Kesan Penambahan Surfaktan Tak-Ionik kepada Kompleks Al(III)-Morin dalam Penentuan Aluminium (III) Akues secara Spektrofotometri

(Effect of Addition of Non-Ionic Surfactant to the A2l(III)-Morin Complex in Spectrophotometry Determination of Aqueous Aluminum(III))

 

FAIZ BUKHARI MOHD SUAH1*, MUSA AHMAD2,3 & LEE YOOK HENG2

 

1Pusat Pengajian Sains Kimia, Universiti Sains Malaysia, 11800 Minden, Pulau Pinang, Malaysia

 

2Pusat Pengajian Sains Kimia dan Teknologi Makanan, Fakulti Sains dan Teknologi, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia

 

3Fakulti Sains dan Teknologi, Universiti Sains Islam Malaysia, Bandar Baru Nilai, 71800 Nilai

Negeri Sembilan Darul Khusus, Malaysia

 

Received: 1 February 2014/Accepted: 8 April 2016

 

ABSTRAK

Dalam kajian ini, kesan surfaktan tak-ionik terhadap kompleks Al(III)-morin telah dijalankan. Surfaktan tak-ionik didapati telah meningkatkan bacaan serapan kompleks Al(III)-morin. Penambahan triton X-100 kepada kompleks Al(III)-morin telah membolehkan penentuan ion Al(III) dalam kuantiti submikrogram pada pH4.00 dijalankan. Bacaan serapan maksimum adalah pada 425 nm dengan serapan molar, ε, 9.31 × 103 l.mol-1cm-1. Graf kalibrasi bagi penentuan ion Al(III) adalah linear daripada 0.03 hingga 2.0 μg mL-1 dengan had pengesanan 0.015 μg mL-1 telah diperoleh dalam kajian ini. Sisihan ralat relatif (r.s.d) ialah 2.2% bagi kepekatan Al(III) 1.0 μg mL-1. Kesan penambahan ion lain terhadap kompleks Al(III)-morin turut dijalankan dan didapati ion Cu(II), Zn(II) dan Pb(II) memberi gangguan yang lebih berbanding ion-ion lain.

 

Kata kunci: Interaksi kompleks logam-surfaktan; morin; penentuan aluminium; surfaktan tak-ionik; Triton X-100

 

ABSTRACT

The effect of surfactants on the Al(III)-morin complex have been studied. It was found that non-ionic surfactant noticeably enhances the absorbance of the Al(III)-morin complex. Determination of submicrogram quantities of Al(III) ion at pH4.00 was made possible by the addition of triton X-100. Maximum absorption was obtained at wavelength of 425 nm, with the calculated molar absorptivity, ε, of 9.31 × 103 l.mol-1.cm-1. A linear calibration curve of 0.03 to 2.0 μg mL-1 with the detection limit of 0.015 μg mL-1 was attained for determination of Al(III) ion. The calculated relative standard deviation (r.s.d) was 2.2% for Al(III) ion quantified at 1.0 μg mL-1. The influence of foreign ions towards the Al(III)-morin complex responses have been carried out too, with Cu(II), Zn(II) and Pb(III) were found to be the main interferences.

 

Keywords: Determination of aluminium; metal complex-surfactant interaction; morin; non-ionic surfactant; Triton X-100

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*Corresponding author; email: fsuah@usm.my

 

 

 

 

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