Laser photoemission generation and electrochemical study of methyl radicals as secondary products of OH radicals capture by dimethyl sulfoxide molecules

Kurmaz, V. A.; Kotkin, A. S.; Симбирцева, Г. В.

doi:10.1007/s10008-011-1534-1

Cited by 11 publications

(3 citation statements)

References 39 publications

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“…The voltammetric signal is generated by the interaction between the electroactive substance (reaction products) and the electrode. The primary adduct of CH 3 S(O)·OHCH 3 is a transient intermediate that spontaneously decomposed into MSIA and CH 3 • (<2 × 10 –5 s) . CH 3 • and CH 3 OO • are also short lifetime, and it is almost impossible for them to directly interact with the GCE to generate the electrochemical signal.…”

Section: Resultsmentioning

confidence: 99%

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Dimethyl Sulfoxide: An Ideal Electrochemical Probe for Hydroxyl Radical Detection

Cui,

Ma,

Liu

et al. 2024

ACS Sens.

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In situ and real-time determination of hydroxyl radicals ( • OH) in physiological and pathological processes is a great challenge due to their ultrashort lifetime. Herein, an electrochemical method was developed by using dimethyl sulfoxide (DMSO) as a trapping probe for rapid determination of • OH in aqueous solution. When DMSO reacted with • OH, an intermediate product methane sulfinic acid (MSIA) was formed, which can be electrochemically oxidized to methanesulfonic acid (MSA) on the glassy carbon electrode (GCE), resulting in a distinct voltammetric signal that is directly proportional to the concentration of • OH. Other commonly encountered reactive oxygen species (ROS), including hypochlorite anions (ClO − ), superoxide anions (O 2•− ), sulfate radicals (SO 4 •−), and singlet oxygen ( 1 O 2 ), have showed no interference for • OH determination. Thus, an electrochemical method was developed for the determination of • OH, which exhibits a wide linear range (0.4−5120 μM) and a low limit detection of 0.13 μM (S/N = 3) and was successfully applied for the quantification of • OH in aqueous extracts of cigarette tar (ACT). Alternatively, the same reaction mechanism is also applicable for the determination of DMSO, in which a linear range of 40−320 μM and a detection limit 13.3 μM (S/N = 3) was achieved. The method was used for the evaluation of DMSO content in cell cryopreservation medium. This work demonstrated that DMSO can serve as an electrochemical probe and has valuable application potential in radical study, biological research, and environmental monitoring.

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Section: Resultsmentioning

confidence: 99%

“…It is evidenced, however, that complicated reactions are often required in the above-mentioned methods, which makes them not suitable for in situ and real-time analysis of • OH. The production of • OH and its reactions with DMSO were proposed in previous research studies, and they are shown in Scheme . − …”

mentioning

confidence: 99%

Dimethyl Sulfoxide: An Ideal Electrochemical Probe for Hydroxyl Radical Detection

Cui,

Ma,

Liu

et al. 2024

ACS Sens.

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“…(3) (4) В случае образования высоко реакционноспособных радикалов (например, ОН • ), время их жизни ограниченно процессами взаимодействия с растворителем. [17] Радикал не вступает в химические взаимодействия с апротонными растворителями, что позволяет использовать метод электролиза при контролируемом потенциале для количественного накопления радикала в растворе. [18,19] При обработке результатов циклической вольтамперометрии использовали традиционные подходы, описанные в ряде классических научных изданий (например, [20] ).…”

Section: обсуждение результатовunclassified

Estimation of Antioxidant Activity of Tetrakis(p–aminophenyl)- porphine regard to Superoxide Ions by Voltammetry Method

Kuzmin¹,

Chulovskaya²,

Parfenyuk³

2013

MHC

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Показано, что процессы электровосстановления кислорода и тетракис(пара-аминофенил)порфина (H 2 T(p-NH 2 Ph)P) в ДМСО на Pt электроде являются квазиобратимыми процессами с диффузионным контролем электродной реакции. На основании уравнения Ренделса-Шевчика определен коэффициент диффузии порфирина в ДМСО. Показано, что адсорбция порфирина на электроде приводит к увеличению константы гетерогенного переноса электрона. Изучено влияние порфирина на ток электроокисления анион-радикала , что позволило оценить антиоксидантную активность порфирина по отношению к супероксид анион-радикалу. Сопоставление полученных значений антиоксидантной активности (H 2 T(p-NH 2 Ph)P) с литературными данными по антиоксидантной активности аскорбиновой кислоты позволяет сделать вывод о перспективности применения (H 2 T(p-NH 2 Ph)P) в качестве антиоксиданта. Ключевые слова: Тетракис(пара-аминофенил)порфина, супероксид анион-радикал, антиоксидантная активность, вольтамперометрия.

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Electrocatalytic degradation of bisphenol a in aqueous solution using β-PbO2/Ti as anode

Zhu

Wang

et al. 2015

Russ J Electrochem

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Laser photoemission generation and electrochemical study of methyl radicals as secondary products of OH radicals capture by dimethyl sulfoxide molecules

Cited by 11 publications

References 39 publications

Dimethyl Sulfoxide: An Ideal Electrochemical Probe for Hydroxyl Radical Detection

Dimethyl Sulfoxide: An Ideal Electrochemical Probe for Hydroxyl Radical Detection

Estimation of Antioxidant Activity of Tetrakis(p–aminophenyl)- porphine regard to Superoxide Ions by Voltammetry Method

Electrocatalytic degradation of bisphenol a in aqueous solution using β-PbO2/Ti as anode

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