Gradient elution of hydroxyacetophenones by supercritical fluid chromatography with electrochemical detection

Gradient elution of hydroxyacetophenones by supercritical fluid chromatography with electrochemical detection
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电化学检测超临界流体色谱梯度洗脱羟基苯乙酮

DOI:
10.1007/s44211-022-00248-7
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发表时间:
2022
影响因子:
1.6
通讯作者:
Hakamata Hideki
Hakamata Hideki
中科院分区:
化学4区
文献类型:
--
作者:
Yamamoto Kazuhiro;Machida Koichi;Kotani Akira;Hakamata Hideki

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以羟基苯乙酮为分析物,建立了线性梯度洗脱超临界流体色谱电化学检测方法。采用Diol色谱柱(4.6 mm id × 250 mm,5 mmμm)为固定相,超临界二氧化碳和甲醇为流动相,二氧化碳和甲醇的比例从99:1(v/v)改为60:40(v/v)。在电化学检测中,以L−1乙酸铵为支持电解液, + 为1.2nV,甲醇为支持电解液。将该方法与等梯度洗脱超临界流体色谱的性能进行了比较,结果表明,在梯度洗脱条件下,该方法的重复性、线性和检测能力都较好。因此,我们发现与等度洗脱相比,梯度洗脱超临界流体色谱法可以实现更快的分离速度和节省资源。因此,本方法有助于绿色分析方法的发展。图形摘要
Linear gradient elution supercritical fluid chromatography with electrochemical detection was developed using hydroxyacetophenones as analytes. Separation was carried out with a diol column (4.6 mm id × 250 mm length, 5 μm) as a stationary phase and a mixture of supercritical carbon dioxide and methanol as a mobile phase, where the ratio of carbon dioxide and methanol was changed from 99:1 (v/v) to 60:40 (v/v). For the electrochemical detection, methanol containing 1.0 mol L−1ammonium acetate was used as a supporting electrolyte solution and + 1.2 V was applied to the electrochemical cell. We compared the performance of the present method to isocratic elution supercritical fluid chromatography, and the repeatability, linearity, and detection capability all showed better analytical parameters in the gradient elution. As such, we found that gradient elution supercritical fluid chromatography can achieve the faster separation and save resources compared to isocratic elution. Thus, the present method may contribute to the development of green analytical methods.Graphical abstract
开发用于填充毛细管柱超临界流体色谱的电流检测器。
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