Evaluation of several pneumatic micronebulizers with different designs for use in ICP–AES and ICP–MS. Future directions for further improvement
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Title: | Evaluation of several pneumatic micronebulizers with different designs for use in ICP–AES and ICP–MS. Future directions for further improvement |
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Authors: | Maestre, Salvador E. | Todolí Torró, José Luis | Mermet, Jean Michel |
Research Group/s: | Análisis Químico Aplicado | Análisis de Alimentos |
Center, Department or Service: | Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología | Laboratoire des Sciences et Stratégies Analytiques |
Keywords: | ICP–AES | ICP–MS | Pneumatic micronebulizers | Food analysis | Liquid prefilming |
Knowledge Area: | Química Analítica |
Issue Date: | Jul-2004 |
Publisher: | Springer |
Citation: | MAESTRE PÉREZ, Salvador; TODOLÍ TORRÓ, José Luis; MERMET, Jean Michel. “Evaluation of several pneumatic micronebulizers with different designs for use in ICP–AES and ICP–MS. Future directions for further improvement”. Analytical and Bioanalytical Chemistry. Vol. 379, No. 5-6 (July 2004). ISSN 1618-2642, pp. 888-899 |
Abstract: | This paper reports characterization of the behavior of five pneumatic micronebulizers based on slightly different designs in inductively coupled plasma atomic-emission spectrometry and mass spectrometry (ICP–AES and ICP–MS). Two nebulizers were used as reference nebulizers, a high-efficiency nebulizer (HEN) and a micromist (MM). They were compared with a commercially available PFA (tetrafluoroethylene–per- fluoroalkyl vinyl ether copolymer) nebulizer and with two new prototypes called the polymeric pneumatic concentric nebulizer (PMN) and the high-solids micronebulizer (HSM). The dimensions of the nebulizers, the gas back-pressure, and the free liquid uptake rates were measured. The study also included tertiary aerosol dropsize distributions, analyte transport rate, and analytical figures of merit, i.e. sensitivities and limits of detection, both in ICP–AES and ICP–MS. Recoveries for two food solid reference materials were also determined. Overall, the results indicated that the PFA and the HEN nebulizers provided the best results. These two nebulizers delivered a higher mass of analyte to the plasma and showed better sensitivies giving lower limits of detection than the PMN, HSM and MM. The results revealed that the liquid prefilming effect occurring before aerosol production in the PFA nebulizer promoted more effi- cient interaction of liquid and gas, thus affording good results even though gas back-pressure values could be maintained below 3 bar. In contrast, the HEN had to be operated at about 7 bar under the same conditions. Nebulizer design did not have a relevant effect on the recovery, which confirmed that the spray chamber plays an important role in terms of non-spectroscopic interferences. |
URI: | http://hdl.handle.net/10045/2750 |
ISSN: | 1618-2642 | 1618-2650 |
DOI: | 10.1007/s00216-004-2664-4 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Rights: | The original publication is available at www.springerlink.com |
Peer Review: | si |
Publisher version: | http://dx.doi.org/10.1007/s00216-004-2664-4 |
Appears in Collections: | INV - AQA-CCA - Artículos de Revistas INV - NANOBIOPOL - Artículos de Revistas INV - AAQCN - Artículos de Revistas INV - bioCir - Artículos de Revistas |
Files in This Item:
File | Description | Size | Format | |
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ABC 379 2004 888.pdf | 1,82 MB | Adobe PDF | Open Request a copy | |
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