A new HF-resistant tandem spray chamber for improved determination of trace elements and Pb isotopes using inductively coupled plasma-mass spectrometry |
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| Institution: | 1. Institute of Environmental Geochemistry, University of Heidelberg, Im Neuenheimer Feld 236, 69120 Heidelberg, Germany;2. AHF analysentechnik AG, Kohlplattenweg 18, 72074 Tübingen, Germany;1. Optical Diagnostics Group, Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta T6G 2G8, Canada;2. The Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta T6G 2G8, Canada;1. Department of Mechanical Engineering, Indian Institute of Technology, Indore, India;2. Centre for Biosciences & Biomedical Engineering, Indian Institute of Technology, Indore, India;3. Department of Bioscience, Himachal Pradesh University, Summer Hill, Shimla, HP 171005, India;4. University School of Environment Management, Guru Govind Singh Indraprastha Univ., Sec-16-C, Dwarika, New Delhi-110078, India;1. Normandie Université, F-14032 Caen, France;2. UMR BOREA, MNHN, UPMC, UCBN, CNRS-7208, IRD-207, IBFA Université de Caen Basse-Normandie, Esplanade de la Paix, CS 14032, 14032 Caen cedex, France;3. Centre de Recherches en Environnement Côtier, Université de Caen Basse-Normandie, 54 rue du Docteur Charcot, 14530 Luc-sur-Mer, France;4. School of Biological Sciences, Plymouth University, Drake Circus, Plymouth PL4 8AA, UK;1. Department of Analytical Chemistry, School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang 110016, PR China;2. College of Medical Informatics, China Medical University, Shenyang 110013, PR China;1. Department of Ultrasonography, Xijing Hospital, Fourth Military Medical University, Xi’An, China;2. Department of Ultrasonography, General Hospital of Jinan Military Area Command of Chinese PLA, Ji’Nan, China;3. Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi’An, China |
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| Abstract: | The use of a new HF-resistant tandem spray chamber arrangement consisting of a cyclonic spray chamber and a Scott-type spray chamber made from PFA and PEEK provides a straightforward approach for improving the performance of inductively coupled-mass spectrometry (ICP-MS). The characteristics of the tandem spray chamber were critically evaluated against a PEEK cyclonic and a PFA Scott-type spray chamber, respectively. Sensitivity across the entire mass range was increased by about three times compared to the conventional setup utilizing only one spray chamber. Precision of the results, especially at low signal intensities, improved by 160% and 31% compared to the cyclonic and Scott-type spray chamber, respectively. Using the tandem spray chamber, the oxide formation rate was lowered by about 50%. Signals as low as 30 counts could be determined under routine measurement conditions with a RSD of 2.4% thus allowing to precisely quantify small concentration differences at the ng l? 1 concentration level. The excellent precision (0.02–0.07%) of 206Pb / 207Pb and 206Pb / 208Pb ratios determined in pore water samples was rather limited by the instrumental capabilities of the single collector ICP-MS instrument than by the performance of the tandem spray chamber. |
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