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Transition metal oxide nanoparticles as surfaces for surface-assisted laser desorption/ionization mass spectrometry of asphaltenes
Petroleum Science and Technology ( IF 1.3 ) Pub Date : 2017-10-02 , DOI: 10.1080/10916466.2017.1370476
Abayomi D Olaitan 1 , Karl A Reyes 1 , Lauren F Barnes 1 , Joseph R Yount 1 , Savanna Ward 1 , Heather S C Hamilton 1 , Kale E King 1 , Christopher J Van Leeuwen 1 , Jacob R Stepherson 1 , Tia K Vargas 1 , Matisha P Kirkconnell 1 , Karen S Molek 1
Affiliation  

ABSTRACT We report the first use of NiO, Fe3O4, TiO2, and Co3O4 nanoparticles as surfaces for surface-assisted laser desorption/ionization (SALDI) mass spectrometry of asphaltenes. Higher signal-to-noise ratios (S/Ns) for asphaltene species were observed using NiO and Fe3O4 nanoparticles for SALDI as compared to LDI, where both surfaces consistently provided 2- to 3-fold improved S/Ns. The new SALDI detection method showed reliable adsorption data measuring supernatant solutions after 24 hour asphaltene adsorption on NiO, Fe3O4, and Co3O4. These results indicated that NiO has a higher adsorption affinity than Fe3O4 and Co3O4 for asphaltene molecules, corroborating reported asphaltene adsorption on metal oxide nanoparticles.

中文翻译:

过渡金属氧化物纳米颗粒作为沥青质表面辅助激光解吸/电离质谱的表面

摘要 我们报告了首次使用 NiO、Fe3O4、TiO2 和 Co3O4 纳米粒子作为表面辅助激光解吸/电离 (SALDI) 沥青质质谱分析的表面。与 LDI 相比,使用 NiO 和 Fe3O4 纳米粒子进行 SALDI 观察到的沥青质物质具有更高的信噪比 (S/N),其中两个表面始终提供 2 到 3 倍的改进 S/N。新的 SALDI 检测方法显示了在 NiO、Fe3O4 和 Co3O4 上吸附沥青质 24 小时后测量上清液的可靠吸附数据。这些结果表明 NiO 对沥青质分子的吸附亲和力高于 Fe3O4 和 Co3O4,证实了报道的沥青质在金属氧化物纳米颗粒上的吸附。
更新日期:2017-10-02
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