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Quenching-Chemiluminescence Determination of Trace Amounts of l-Tyrosine Contained in Dietary Supplement by Chemiluminescence Reaction of an Iron-Phthalocyanine Complex

التفاصيل البيبلوغرافية
العنوان: Quenching-Chemiluminescence Determination of Trace Amounts of l-Tyrosine Contained in Dietary Supplement by Chemiluminescence Reaction of an Iron-Phthalocyanine Complex
المؤلفون: Takao Ohtomo, Shukuro Igarashi, Yoshitaka Takagai, Osamu Ohno
المصدر: Journal of Analytical Methods in Chemistry, Vol 2012 (2012)
بيانات النشر: Hindawi Limited, 2012.
سنة النشر: 2012
المجموعة: LCC:Analytical chemistry
مصطلحات موضوعية: Analytical chemistry, QD71-142
الوصف: The chemiluminescence (CL) signal immediately appeared when a hydrogen peroxide solution was injected into an iron-phthalocyanine tetrasulfonic acid (Fe-PTS) aqueous solution. Moreover, the CL intensity of Fe-PTS decreased by adding L-tyrosine. Based on these results, the determination of trace amounts of L-tyrosine was developed using the quenching-chemiluminescence. The calibration curve of L-tyrosine was obtained in the concentration range of 2.0×10−7 M to 2.0×10−5 M. Moreover, the relative standard deviation (RSD) was 1.63 % (𝑛=5) for 2.0×10−6 M L-tyrosine, and its detection limits (3σ) were 1.81×10−7 M. The spike and recovery experiments for L-tyrosine were performed using a soft drink. Furthermore, the determination of L-tyrosine was applied to supplements containing various kinds of amino acids. Each satisfactory relative recovery was obtained at 98 to 102%.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2090-8865
2090-8873
Relation: https://doaj.org/toc/2090-8865; https://doaj.org/toc/2090-8873
DOI: 10.1155/2012/520248
URL الوصول: https://doaj.org/article/3193263bfab3461bb5d3636a97aebec5
رقم الأكسشن: edsdoj.3193263bfab3461bb5d3636a97aebec5
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:20908865
20908873
DOI:10.1155/2012/520248