Comparison of a very high frequency 148 MHz inductively coupled plasma to a 27 MHz ICP |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 200335, China;2. School of Chemistry and Environmental Science, Shangrao Normal University, Shangrao 334001, China;3. National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 33000, China;4. National and Provincial Union Engineering Research Center for the Veterinary Herbal Medicine Resources and Initiative, Hunan Agricultural University, Changsha 410128, China;1. Division of Risk Management and Societal Safety, Lund University, Sweden;2. Lund University Centre for Risk Assessment and Management, LUCRAM, Sweden;3. Centre for Societal Resilience, Lund University, Sweden;1. School of Computer and Communication Engineering, Beijing Key Laboratory of Knowledge Engineering for Materials Science, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. The State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, School of Basic Medicine, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China;3. Shunde Graduate School, University of Science and Technology Beijing, Foshan 528399, Guangdong, China;1. Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Japan Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan;2. CREST, Japan Science and Technology Agency, Chiyoda-ku, Tokyo 102-0076, Japan;3. Frontier Chemistry Center, Hokkaido University, Kita-ku, Sapporo 060-8628, Japan |
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| Abstract: | ![]()
Physical parameters and analytical performance are determined for an analytical ICP operated at 148 MHz, a frequency nearly three times higher than any previously reported. The iron(I) excitation temperatures are approximately 1.5 times lower and the electron densities are five times lower than at 27 MHz. The consequences of these changes are lower analyte and background continuum emission intensities, such that the signal to background ratios are decreased at the higher frequency. Freedom from interferences and working curve linearity are unaffected while ease of sample introduction is improved. A shift towards atomic emission indicates a deviation farther from LTE at 148 MHz. These effects are attributed to the decrease in skin depth with increasing frequency. |
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