Factors affecting analyte transport through the sampling orifice of an inductively coupled plasma mass spectrometer |
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| Affiliation: | 1. Department of Physics, Jahangirnagar University, Savar, Dhaka-1342, Bangladesh;2. Institute of Natural Sciences, United International University, Dhaka, Bangladesh |
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| Abstract: | Laser-excited ionic fluorescence has been used to study the effects of sample matrix, operating conditions, and load coil shielding on analyte ion transport efficiency through the sampling orifice of an inductively coupled plasma mass spectrometer. Significant changes in ion transport efficiency result from changes in sample composition, RF forward power, nebulizer flow and torch shield configuration. The changes in ion transport efficiency correlate well with changes in the potential recorded on a single floating probe placed 1 mm upstream from the sampling orifice. |
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