Determination of ascorbic acid by suppressed chemiluminescence
Ma, QL; Jin, YP; You, HT; Ma, HM
AbstractThis paper describes a method for determining ascorbic acid by the suppression of DTMC-H2O2 chemiluminescence. Various factors affecting the chemiluminescence determination of ascorbic acid were examined. Under the optimal conditions (1.2 x 10(-4) mol. L-1 of DTMC, 5.0 x 10(-5) mol.L-1 of H2O2, and pH 11.4 Na2HPO4-NaOH), the quenching of the chemiluminescent intensity was proportional to the concentration of ascorbic acid in the range of 1.0 x 10(-7)-8.0 x 10(-6) mol.L-1, and the detection limit was 8.0 x 10(-8) mol.L-1 (S/N=3). The RSD was 4.6% for 1.0 x 10(-6) mol.L-1 of ascorbic acid (n = 10). The selectivity of this method was high and no masking agent required. The proposed method has been applied to the determination of ascorbic acid in real samples. The obtained results were in agreement with those by CuSO4-KI titration.
KeywordChemiluminescence Ascorbic Acid Hydrogen Peroxide 7-(4 6-dichloro-1 3 5-triazinglamino)-4-methylcoumarin
Indexed BySCI
WOS IDWOS:000180384600004
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorMa, QL
Affiliation1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
2.Res Div Environm Protect Zhejiang Province, Hangzhou 310007, Peoples R China
3.Tobacco Bur Beijing, Beijing 100010, Peoples R China
Recommended Citation
GB/T 7714
Ma, QL,Jin, YP,You, HT,et al. Determination of ascorbic acid by suppressed chemiluminescence[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2002,22(6):888-890.
APA Ma, QL,Jin, YP,You, HT,&Ma, HM.(2002).Determination of ascorbic acid by suppressed chemiluminescence.SPECTROSCOPY AND SPECTRAL ANALYSIS,22(6),888-890.
MLA Ma, QL,et al."Determination of ascorbic acid by suppressed chemiluminescence".SPECTROSCOPY AND SPECTRAL ANALYSIS 22.6(2002):888-890.
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