Determination of Small Amounts of L-Ascorbic Acid Using the Chemiluminescence of an Iron-Chlorophyllin Complex

Kato, Takeshi; Ohno, Osamu; Nagoshi, Toshimasa; Ichinose, Yoshihiro; Igarashi, Shukuro

doi:10.2116/analsci.21.579

Cited by 14 publications

(8 citation statements)

References 27 publications

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“…Since l -tyrosine is a reducing agent, naturally, authors think that it may work as H 2 O 2 scavenger. In a previous paper [17], it is because the similar quenching-CL phenomenon by L-ascorbic acid was observed in iron-chlorophyllin/H 2 O 2 /L-ascorbic acid.…”

Section: Resultssupporting

confidence: 58%

“…Moreover, in the iron-chlorophyllin complex CL, the luminescence was quenched when L-ascorbic acid was made to coexist in an oxidation reaction with hydrogen peroxide. The quenching-CL determination of 10 −8 M for L-ascorbic acid was developed [17]. On the other hand, the CL phenomenon with respect to the iron-phthalocyanine tetrasulfonic acid (Fe-PTS) was reported [18, 19].…”

Section: Introductionmentioning

confidence: 99%

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

Ohtomo

Igarashi

Takagai

et al. 2012

Journal of Analytical Methods in Chemistry

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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%.

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Section: Resultssupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

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

Ohtomo

Igarashi

Takagai

et al. 2012

Journal of Analytical Methods in Chemistry

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“…These include spectrophotometry (Noroozifar and Khorasani, 2003;Aydogmus et al, 2002;Sena et al, 2000), calorimetry (Antonelli et al, 2002), chemiluminescence (Kato et al, 2005), voltammetry (Ahmed et al, 2005;Ensafi, 2003), enzymatic assays (Shekhovtsova et al, 2006;Danet et al, 2000), and amperometric method (Kumar and Narayanan, 2006). However, there may be some drawbacks in sensitivity, selectivity, stability, or difficulties in sample preparation.…”

Section: Introductionmentioning

confidence: 99%

Extraction and quantitative determination of ascorbic acid during different maturity stages of Rosa canina L. fruit

Nojavan

Khalilian

Kiaie³

et al. 2008

Journal of Food Composition and Analysis

102

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“…Many analytical methods have been reported in the literature for the determination of the ascorbic acid contents in different pharmaceutical products, foods and biological fluids. These include spectrophotometric, [1][2][3][4] highperformance liquid chromatographic, 5 electrochemical, 6 fluorimetric 7 and chemiluminescent 8 methods. Of all these methods, spectrophotometric methods are, perhaps, the most commonly used.…”

Section: Introductionmentioning

confidence: 99%

Spectrophotometric Determination of L-Ascorbic Acid in Pharmaceuticals Based on Its Oxidation by Potassium Peroxymonosulfate and Hydrogen Peroxide

Salkić¹,

Selimović²

2015

Croat. Chem. Acta

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Abstract. Two new, accurate, precise, and sensitive spectrophotometric methods were developed for the assay of L-ascorbic acid in pharmaceutical preparations. The determination of L-ascorbic acid was based on its oxidation by potassium peroxymonosulfate (method A) and hydrogen peroxide in the presence of Cu(II) as a catalyst (method B). The molar absorptivities were found to be 1.48×10 4 and 1.06×10 4 L mol -1 cm -1 for methods A and B, respectively. Beer's law was obeyed in the concentration range of 0.65-11.20 μg mL -1 for method A and 0.51-16.00 μg mL -1 for method B. Other compounds commonly found in vitamin C and multivitamin products did not interfere with the determination of L-ascorbic acid.. The proposed methods were successfully applied for the determination of L-ascorbic acid in pharmaceutical formulations. The results obtained with the proposed methods showed good agreement with those given by the titrimetric method using iodine.

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Determination of Small Amounts of L-Ascorbic Acid Using the Chemiluminescence of an Iron-Chlorophyllin Complex

Cited by 14 publications

References 27 publications

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

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

Extraction and quantitative determination of ascorbic acid during different maturity stages of Rosa canina L. fruit

Spectrophotometric Determination of L-Ascorbic Acid in Pharmaceuticals Based on Its Oxidation by Potassium Peroxymonosulfate and Hydrogen Peroxide

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