Electrochemically modulated liquid chromatography using a boron-doped diamond particle stationary phase.

Electrochemically modulated liquid chromatography using a boron-doped diamond particle stationary phase.
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使用掺硼金刚石颗粒固定相的电化学调制液相色谱。

DOI:
10.1016/j.chroma.2008.09.069
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发表时间:
2008
期刊:
Journal of chromatography. A
影响因子:
--
通讯作者:
Porter,MarcD
Porter,MarcD
中科院分区:
--
文献类型:
--
作者:
Muna,GraceW;Swope,VernonM;Swain,GregM;Porter,MarcD

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本文报道了掺硼金刚石粉末(BDDP)作为电化学调制液相色谱(EMLC)固定相的初步试验。EMLC通过改变施加到导电填料的电势(Eappl)来操纵保持。多孔石墨碳(PGC)已常规地用作EMLC分离中的材料。本文研究了BDDP作为EMLC固定相的实用性,并比较了其相对于PGC在组成和微观结构上的稳定性。结果显示BDDP在宽范围的Eapplvalues(即,−1.2至+1.2V vs. Ag/AgCl,饱和NaCl)。数据还表明,静电在芳香族磺酸盐在BDDP固定相上的吸附中起着关键作用,并且这些分析物与PGC支持物相比保留得更弱。这种方法提供了一种手段,以促进对碳质材料的分子吸附和保留机制的理解的潜力进行了简要讨论。
This paper reports on preliminary tests of the performance of boron-doped diamond powder (BDDP) as a stationary phase in electrochemically modulated liquid chromatography (EMLC). EMLC manipulates retention through changes in the potential applied (Eappl) to a conductive packing. Porous graphitic carbon (PGC) has routinely been utilized as a material in EMLC separations. Herein the utility of BDDP as a stationary phase in EMLC was investigated and its stability, both compositionally and microstructurally, relative to PGC was compared. The results show that BDDP is stable over a wide range of Eapplvalues (i.e., −1.2 to +1.2V vs. Ag/AgCl, sat’d NaCl). The data also reveal that electrostatics play a key role in the adsorption of the aromatic sulfonates on the BDDP stationary phase, and that these analytes are more weakly retained in comparison to the PGC support. The potential for this methodology to provide a means to advance the understanding of molecular adsorption and retention mechanisms on carbonaceous materials is briefly discussed.
使用二氧化硅基固定相色谱分离阿普洛尔和相关物质的稳健性以及在多孔石墨碳固定相上选择性保留美托洛尔和相关物质
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