編號：NMJS05098
篇名：在色氨酸存在下利用多壁碳納米管糊電極和萘酚介質(zhì)構(gòu)成的伏安傳感器測定N-乙酰半胱氨酸(英文)
作者：Mohsen Keyvanfard； Maryam Tahmasbi； Hassan Karimi-Maleh； Kha
關(guān)鍵詞：N‐actylcysteine Tryptophan Multiwall carbon nanotube Naphthol green； Sensor；
機(jī)構(gòu)： Department of chemistry,Majlesi Branch,Islamic Azad University； Department of chemistry,Shahreza Bra
摘要： A multiwall carbon nanotube modified electrode prepared by incorporating multiwall carbon nanotubes in the electrode of a sensor and naphthol green as a homogeneous mediator was used as a voltammetric sensor for the determination of N‐actylcysteine(N‐AC) in the presence of trypto-phan(Trp). The voltammograms of differential pulse voltammetry of N‐AC in a mixture with Trp were separated from each other by a potential difference of 200 mV, which allowed the determina-tion of both N‐AC and Trp simultaneously. Under the optimum conditions, the electrocatalytic cur-rents increased linearly with N‐AC concentration in the range of 0.25–400 μmol/L(two linear seg-ments with different slopes). The detection limit for N‐AC was 0.08 μmol/L. The kinetic parameters of the system were determined using electrochemical methods. The method was applied for the determination of N‐AC in drug and urine samples.
