کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5134326 1492224 2016 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The different cones combination enhanced sensitivity on MC-ICP-MS: The results from boron isotope analysis
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
The different cones combination enhanced sensitivity on MC-ICP-MS: The results from boron isotope analysis
چکیده انگلیسی

â¿¢The sensitivity of MC-ICP-MS can be improved using different cones with different orifice diameters and angles.â¿¢More ions can be introduced into sample cones with larger orifices.â¿¢Trumpet-shaped entrances and exits can provide more space for ion beams to exit the skimmerâ¿¿s orifice.

The sensitivity of multi-collector inductively coupled plasma mass spectrometers (MC-ICP-MS) can be significantly improved using different sample and skimmer cones with different orifice diameters and angles. In this study, an MC-ICP-MS with three typical combinations of sample and skimmer cones [(H skimmer cone + standard sample cone (Standard + H), X skimmer cone + standard sample cone (Standard + X) and X skimmer cone + Jet sample cone (Jet + X)] was used to measure the boron isotopes, and the effect of the different combinations of sample and skimmer cones on the sensitivity of the MC-ICP-MS and the underlying physical principles were investigated. The results suggest that more ions can be introduced into sample cones with larger orifices, which results in increased sensitivity. Compared with standard skimmer cones (which have cylindrical entrances and trumpet-shaped exits), X skimmer cones (which have trumpet-shaped entrances and exits) can provide more space for ion beams to entrance the skimmer⿿s orifice after they are subjected to the space-charge effect.

177Compared with standard skimmer cones (a, which have cylindrical entrances and trumpet-shaped exits), X skimmer cones (b, which have trumpet-shaped entrances and exits) can provide more space for ion beams to entrance the skimmerâ¿¿s orifice after they are subjected to the space-charge effect.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mass Spectrometry - Volume 408, 10 September 2016, Pages 33-37
نویسندگان
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