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Electrochemiluminescence analysis of tryptophan in aqueous solutions based on its reaction with tetraphenylborate anions.
Analyst ( IF 3.6 ) Pub Date : 2020-04-01 , DOI: 10.1039/d0an00229a Yuriy Zholudov 1 , Natalia Lysak , Dmytro Snizhko , Olena Reshetniak , Guobao Xu
Analyst ( IF 3.6 ) Pub Date : 2020-04-01 , DOI: 10.1039/d0an00229a Yuriy Zholudov 1 , Natalia Lysak , Dmytro Snizhko , Olena Reshetniak , Guobao Xu
Affiliation
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The emission of electrogenerated chemiluminescence (ECL) is observed upon the oxidation of fluorescent aromatic amino acid tryptophan in aqueous solutions at a glassy carbon electrode in the presence of a sodium tetraphenylborate co-reactant in a broad pH range. The emission is particularly strong when potential pulses are applied to the electrode. The ECL intensity is proportional to the concentration of amino acid and allows its determination in the concentration range of 0.3 μM-0.3 mM with high selectivity in the presence of other amino acids. The results of studies suggest that the indole ring of tryptophan is responsible for the observed ECL emission.
中文翻译：
色氨酸与四苯基硼酸根阴离子反应的水溶液中电化学发光分析。
在四苯基硼酸钠共反应剂存在下，在宽pH范围内，在玻璃碳电极上，水溶液中的荧光芳香族氨基酸色氨酸在水溶液中氧化后，观察到电致化学发光（ECL）的发射。当将电势脉冲施加到电极时，发射特别强。ECL强度与氨基酸浓度成正比，可以在存在其他氨基酸的情况下以高选择性在0.3μM-0.3mM的浓度范围内进行测定。研究结果表明色氨酸的吲哚环负责观察到的ECL发射。
更新日期：2020-03-02
中文翻译：
色氨酸与四苯基硼酸根阴离子反应的水溶液中电化学发光分析。
在四苯基硼酸钠共反应剂存在下，在宽pH范围内，在玻璃碳电极上，水溶液中的荧光芳香族氨基酸色氨酸在水溶液中氧化后，观察到电致化学发光（ECL）的发射。当将电势脉冲施加到电极时，发射特别强。ECL强度与氨基酸浓度成正比，可以在存在其他氨基酸的情况下以高选择性在0.3μM-0.3mM的浓度范围内进行测定。研究结果表明色氨酸的吲哚环负责观察到的ECL发射。
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