DSpace

Digital.CSIC > Ciencia y Tecnología de Materiales > Centro Nacional de Investigaciones Metalúrgicas (CENIM) > (CENIM) Artículos >

Share

EndNote

Impact

Links

Closed Access item Determination of Phosphorus Oontent in Steels Using Flow Injection into an Argon-Water Carrier for Inductively Coupled Plasma- MassSpectrometry

Authors:Gómez Coedo, Aurora
Dorado López, María Teresa
Padilla, Isabel
Alguacil, Francisco José
Keywords:Phosphorus determination;, Inductively Coupled PlasmaMassSpectrometry, Flow injection, Argon-water-flow-injection
Issue Date:Sep-1997
Publisher:Nihon Tekko Kyokai (Iron and Steel Institute of Japan)
Citation:ISIJ International 37 (9), 878-884 (1997)
Abstract:This paper describes a methodology for the determination of phosphorus in steels using argon-water carrier, in flow injection with Inductively Coupled PlasmaMassSpectrometry. "P is a monoisotopic element and its determination, at very low levels, is very difficult due to contamination probiems and interference inherent in the plasmaandsolvents. Theseunduly raise the backgroundbeing necessary asamplepretreatment step to achieve the required contents. To dissolve the samples in this study, a microwavedigestion system wasapplied to minimize the samplepreparation time, the quantities of reagents and the risk of contamination. Amercury cathode electrolysis wasused for performing a rapid matrix removal/analyte enrichment. The use of an argon-water stream as carrier yielded an enhancementin sensitivity and the detection limit was improved by a factor of approximately 2.5 whencomparedwith that experienced using flow injection into an all-water carrier. Optimization of the operating conditions for the argon-water flow injection and for Inductively Coupled Plasma MassSpectrometer, were selected with respect to the peak height sensitivity and wer~ found to be dependent on the nebulizer gas flow-rate, the radio frequency power, the sample injection volume and the carrier flow-rate. The detection limit based on a sample rate of 0.02g m/~1 was 0.4 ,g ' g~1 andthe relative standard deviations at IOOandIO,lg ' /1 Psolution were2.0 and150/0 respectively. Data are presented for 3Standard Reference Materials: JSS003-2, (from Japaneselron and Steel Certified Reference Materials); and ECRM~285-1 and 278-1 (from Bureau of Analysed SampiesLTD).
Description:Variante de título de la revista: Iron and Steel Institute of Japan International
Publisher version (URL):http://dx.doi.org/10.2355/isijinternational.37.878
URI:http://hdl.handle.net/10261/38494
ISSN:0915-1559
Appears in Collections:(CENIM) Artículos

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.