کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1193525 1492321 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Porous ion emitters—A new type of thermal ion emitter
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Porous ion emitters—A new type of thermal ion emitter
چکیده انگلیسی

A new type of porous refractory material has been developed as a thermal ionization emitter that is an improvement over both direct filament and resin bead loading. The porous ion emitter is sintered onto the center of a conventional thermal ionization filament and an aqueous solution containing the sample wicked into this emitter. Application of the porous ion emitter to uranium is demonstrated to provide a utilization efficiency ranging between 1% and 2% across a sample size range of 0.2–10 pg, better than that achieved from resin beads and much better than that achieved with direct loading onto a filament. The technique improves sensitivity and reduces the chance of losing a high value sample when manipulating a single resin bead containing an entire sample.

The porous ion emitter is sintered onto the center of a conventional thermal ionization filament and an aqueous solution containing the sample wicked into this emitter.Figure optionsDownload high-quality image (67 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mass Spectrometry - Volume 296, Issues 1–3, September–October 2010, Pages 21–24
نویسندگان
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