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首页> 外文期刊>RSC Advances >Ultrasensitive determination of ascorbic acid by using cobalt oxyhydroxide nanosheets to enhance the chemiluminescence of the luminol–H2O2 system
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Ultrasensitive determination of ascorbic acid by using cobalt oxyhydroxide nanosheets to enhance the chemiluminescence of the luminol–H2O2 system

机译：通过羟基氧化钴纳米片超灵敏测定抗坏血酸，以增强鲁米诺–H2O2系统的化学发光

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Ascorbic acid (AA) as an essential vitamin in the human body participates in various physiological reactions and plays a key role in many biochemical processes. Therefore, it is of vital importance to monitor and quantify AA in commercial tablets, beverages and food. In this work, a rapid and ultrasensitive chemiluminescence (CL) system for the detection of AA was developed, in which ultrathin cobalt oxyhydroxide (CoOOH) nanosheets were applied in the conventional luminol–H _(2) O _(2) CL system. The results showed that ultrathin CoOOH nanosheets as a catalyzer remarkably improved the CL intensity of the CoOOH–luminol–H _(2) O _(2) system, up to about 1400-fold. Under the optimized conditions, the CL inhibition efficiencies increase linearly with the concentrations of AA in the range of 1–500 pmol L ~(?1) , and the limit of detection was 39 fmol L ~(?1) . Moreover, the proposed CL system was successfully applied in the determination of AA in medicinal tablets with satisfactory results.
机译：抗坏血酸（AA）作为人体必需的维生素，参与各种生理反应，并在许多生化过程中发挥关键作用。因此，监测和定量市售片剂，饮料和食品中的AA至关重要。在这项工作中，开发了一种用于检测AA的快速，超灵敏的化学发光（CL）系统，其中在常规鲁米诺–H _（2）O _（2）CL系统中应用了超薄羟基氧化钴（CoOOH）纳米片。结果表明，超薄的CoOOH纳米片作为催化剂显着提高了CoOOH-luminol-H _（2）O _（2）系统的CL强度，最高可达1400倍左右。在最佳条件下，CL抑制效率随AA浓度在1–500 pmol L〜（？1）范围内线性增加，检出限为39 fmol L〜（？1）。此外，所提出的CL系统已成功用于药物片剂中AA的测定，结果令人满意。

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