کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1240262 | 969113 | 2009 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The effect of the sampling interface on spatial distributions of barium ions and atoms in an inductively coupled plasma ion source
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The effect of the sampling interface on spatial distributions of barium ions and atoms in an inductively coupled plasma ion source The effect of the sampling interface on spatial distributions of barium ions and atoms in an inductively coupled plasma ion source](/preview/png/1240262.png)
چکیده انگلیسی
Planar laser-induced fluorescence was used to examine the effect of the sampling cone on analyte atom and ion distributions in the inductively coupled plasma used as an ion source for elemental mass spectrometry. Comparisons of planar laser-induced fluorescence images in the presence and absence of the sampling interface reveal that the insertion of the sampling cone into the plasma dramatically lowers singly-charged ion densities in the 1-2Â mm region immediately upstream from the sampling cone, but increases densities in the region between 2Â mm and 10Â mm upstream from the sampling cone. Some of the drops in densities near the sampling cone can be attributed to acceleration of the plasma through the pumped sampling orifice. A shift in equilibrium between doubly and singly charged barium ions caused by cooling of the plasma is proposed to account for the increases in densities of Ba+ in the upstream region.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part B: Atomic Spectroscopy - Volume 64, Issue 5, May 2009, Pages 384-391
Journal: Spectrochimica Acta Part B: Atomic Spectroscopy - Volume 64, Issue 5, May 2009, Pages 384-391
نویسندگان
H. Ma, N. Taylor, P.B. Farnsworth,