کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
5130746 1490854 2017 7 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Sol-gel coated ion sources for liquid chromatography-direct electron ionization mass spectrometry
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI
فقط 3 هزار تومان
سفارش ترجمه تخصصی
با تضمین قیمت و کیفیت
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Sol-gel coated ion sources for liquid chromatography-direct electron ionization mass spectrometry
چکیده انگلیسی


- Advances in interfacing liquid chromatography and electron ionization mass spectrometry.
- Development of innovative sol-gel ion source coatings.
- Noticeable results with the silica-based ion source coating.
- Improved detection of high-molecular weight and/or high-polar compounds.

Advances in interfacing liquid chromatography and electron ionization mass spectrometry are presented. New ion source coatings synthesized by sol-gel technology were developed and tested as vaporization surfaces in terms of peak intensity, peak width and peak delay for the liquid chromatography-direct electron ionization mass spectrometry (Direct-EI) determination of environmental pollutants like polycyclic aromatic hydrocarbons and steroids. Silica-, titania-, and zirconia-based coatings were sprayed inside the stainless steel ion source and characterized in terms of thermal stability, film thickness and morphology. Negligible weight losses until 350-400 °C were observed for all the materials, with coating thicknesses in the 6 (±1)-11 (±2) μm range for optimal ionization process. The best performances in terms of both peak intensity and peak width were obtained by using the silica-based coating: the detection of the investigated compounds was feasible at low ng μl−1 levels with a good precision (RSD < 9% for polycyclic aromatic hydrocarbons and <11% for hormones).

204

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 978, 25 July 2017, Pages 35-41
نویسندگان
, , , , ,
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI
فقط 3 هزار تومان
سفارش ترجمه تخصصی
با تضمین قیمت و کیفیت