کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1237596 | 968900 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Novel and sensitive methods for the determination of dopamine based on the resonance Rayleigh scattering, second-order scattering and frequency doubling scattering quenching effects
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Three novel methods were designed for the determination of dopamine (DA) by means of the quenching effects on resonance Rayleigh scattering (RRS) and non-linear scattering such as second-order scattering (SOS) and frequency doubling scattering (FDS) intensities. In Britton-Robinson buffer medium (pH 6.02), I3â could react with DA to produce Iâ, which resulted in the decreases of the RRS, SOS and FDS intensities of the ethyl violet (EV)-I3â system, and the decreases of scattering intensity (ÎI) were directly proportional to the concentrations of DA in a certain range. The detection limit (3Ï) for DA was 0.0195 μmol/L for the RRS method, 0.286 μmol/L for the SOS method and 0.0985 μmol/L for the FDS method, respectively. In this work, the characteristics of absorption, RRS, SOS and FDS spectra of this reaction have been studied; the optimum reaction condition and influencing factors have been investigated. The methods were applied to the determination of DA in pharmaceutical samples with satisfactory results.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 73, Issue 4, 15 August 2009, Pages 747-751
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 73, Issue 4, 15 August 2009, Pages 747-751
نویسندگان
Yan Ma, Nian Bing Li, Hong Qun Luo,