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High spatial resolution analysis of ferromanganese concretions by LA-ICP-MS
Luleå tekniska universitet.
Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, Geovetenskap och miljöteknik.ORCID-id: 0000-0003-4505-4590
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2002 (Engelska)Ingår i: Geochemical Transactions, ISSN 1467-4866, E-ISSN 1467-4866, Vol. 3, nr 5, s. 40-47Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

A procedure was developed for the determination of element distributions in cross-sections of ferromanganese concretions using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). The effects of carrier flow rates, rf forward power, ablation energy, ablation spot size, repetition rate and number of shots per point on analyte intensity were studied. It is shown that different carrier gas flow rates are required in order to obtain maximum sensitivities for different groups of elements, thus complicating the optimisation of ICP parameters. On the contrary, LA parameters have very similar effects on almost all elements studied, thus providing a common optimum parameter set for the entire mass range. However, for selected LA parameters, the use of compromise conditions was necessary in order to compensate for relatively slow data acquisition by ICP-MS and maintain high spatial resolution without sacrificing the multielemental capabilities of the technique. Possible variations in ablation efficiency were corrected for mathematically using the sum of Fe and Mn intensities. Quantification by external calibration against matrix-matched standards was successfully used for more than 50 elements. These standards, in the form of pressed pellets (no binder), were prepared in-house using

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2002. Vol. 3, nr 5, s. 40-47
Nationell ämneskategori
Geokemi
Forskningsämne
Tillämpad geologi
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URN: urn:nbn:se:ltu:diva-8550DOI: 10.1186/1467-4866-3-40Lokalt ID: 7106f620-ac7e-11db-aeba-000ea68e967bOAI: oai:DiVA.org:ltu-8550DiVA, id: diva2:981488
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Validerad; 2002; 20061115 (bajo)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2018-02-26Bibliografiskt granskad

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Rodushkin, IliaBaxter, DouglasIngri, JohanÖhlander, Björn

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Rodushkin, IliaBaxter, DouglasIngri, JohanÖhlander, Björn
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Geochemical Transactions
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