کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5134214 1492214 2017 4 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
18-Crown-6 spiking in direct infusion ESI-MS analysis of complex mixtures: “One ion per analyte” relationship facilitating ion assignments and eliminating isobaric interferences
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
18-Crown-6 spiking in direct infusion ESI-MS analysis of complex mixtures: “One ion per analyte” relationship facilitating ion assignments and eliminating isobaric interferences
چکیده انگلیسی


- Regular formic acid spiking does form ionic species with high sodium and potassium cationic content.
- Use of 18-crown-6 ether capture sodium and potassium eliminating them from the solution.
- Trifluoracetic acid protonates the neutral molecules.

Spiking with 18-crown-6/trifluoracetic acid is shown to sequester metal cations thus eliminating unwanted [TAG+Na]+ and [TAG+K]+ ions whereas favoring analyte detection as sole [TAG+H]+ ions in the ESI(+)-MS analysis of methanolic solutions of soybean oil. This sequestering eliminates ion splitting and its resulting isobaric interferences, thus increasing spectra quality greatly facilitates analyte identification. This “one ion per analyte relationship” is highly beneficial for direct infusion analysis of complex mixtures by ESI-MS.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mass Spectrometry - Volume 418, July 2017, Pages 37-40
نویسندگان
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