5/28/2023 0 Comments Jim fink lovelace nebulizer![]() ![]() The ultrasonic nebulizer, when combined with a conventional aerosol desolvation apparatus, provided an order of magnitude or more improvement in simultaneous multielement detection limits as compared to those obtained when the pneumatic nebulizer was used either with or without desolvation. Two important aspects of the analytical performance of a newly developed ultrasonic nebulizer and a specially designed pneumatic nebulizer have been compared for use in inductively coupled plasma-atomic emission spectroscopy (ICP-AES). International Nuclear Information System (INIS) Multielement detection limits and sample nebulization efficiencies of an improved ultrasonic nebulizer and a conventional pneumatic nebulizer in inductively coupled plasma-atomic emission spectrometry Quantitative performance of the method was tested with two authentic urine samples, and the results were in good agreement with those obtained with conventional GC-electron ionization-MS after derivatization. The method showed good sensitivity (LODs 0.2-1 ng/mL), repeatability (relative standard deviationanabolic steroids. The feasibility of GC-Î❊PPI-MS/MS in the analysis of six selected anabolic steroids in urine samples was studied with respect to intra-batch repeatability, linearity, linear range, and limit of detection (LOD). ![]() The APPI microchip provides high ionization efficiency and produces abundant protonated molecules or molecular ions with minimal fragmentation. This study demonstrates the feasibility of GC- microchip atmospheric pressure photoionization-tandem mass spectrometry (GC-Î❊PPI-MS/MS) in the analysis of underivatized anabolic steroids in urine. Recently, we introduced a heated nebulizer microchip and showed its potential to interface liquid microseparation techniques and GC with API-MS. Mass spectrometers equipped with atmospheric pressure ion sources (API-MS) have been designed to be interfaced with liquid chromatographs (LC) and have rarely been connected to gas chromatographs (GC). Hintikka, Laura Haapala, Markus Franssila, Sami Kuuranne, Tiia Leinonen, Antti Kostiainen, Risto These results confirmed the suitable stability and sensitivity of the He-rf-PDMS microchip plasma for application as an atomization source.įeasibility of gas chromatography- microchip atmospheric pressure photoionization-mass spectrometry in analysis of anabolic steroids. Oh, Joosuck, E-mail: transport efficiency of dried particles generated from an ultrasonic nebulizer (USN) was studied to improve the analytical performance of a lab-made, He- microchip plasma system, in which a quartz tube (, respectively. Particle transport in a He- microchip plasma atomic emission system with an ultrasonic nebulizer for aqueous sample introductionĮnergy Technology Data Exchange (ETDEWEB) ![]()
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