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dc.contributor.authorIlander, Aki
dc.contributor.authorVäisänen, Ari
dc.date.accessioned2011-06-16T06:39:56Z
dc.date.available2011-06-16T06:39:56Z
dc.date.issued2007
dc.identifier.citationIlander, A. & Väisänen, A. (2007). An ultrasound-assisted digestion method for the determination of toxic element concentrations in ash samples by inductively coupled plasma optical emission spectrometry. Analytica Chimica Acta, 602 (2), 195-201.
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/27188
dc.description.abstractmethod of ultrasound-assisted digestion followed by inductively coupled plasma optical emission spectrometry (ICP-OES) used for the determination of toxic element concentrations (arsenic, barium, cobalt, copper, lead, nickel, strontium, vanadium and zinc) in ash samples was developed. All the measurements were performed in robust plasma conditions which were tested by measuring the Mg(II) 280.270 nm/Mg(I) 285.213 nm line intensity ratios. The highest line intensity ratios were observed when a nebulizer gas flow of 0.6 L minˉ¹, auxiliary gas flow of 0.2 L minˉ¹ and plasma power of 1400 W were used for radially viewed plasma. The analysis of SRM 1633b showed that the ultrasound-assisted method developed is highly comparable with the microwave digestion method standardized by the United States Environmental Protection Agency (EPA-3052). The ultrasound-assisted digestion with a digestion solution of aqua regia and hydrofluoric acid (HF) resulted in recovery rates of over 81%. One exception is arsenic which resulted in recoveries of about 60% only; however, it could be digested with good recovery (>90%) using a digestion solution of 5 mL of water and 5 mL of aqua regia. The major advantage of the ultrasound-assisted digestion over microwave digestion is the high treatment rate (30 samples simultaneously with a sonication time of 18 min).en
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofseriesAnalytica Chimica Acta
dc.subject.otheremission spectrometryen
dc.subject.otherultrasounden
dc.subject.othermicrowaveen
dc.subject.otherashen
dc.subject.othertoxic elementen
dc.subject.otherultraäänifi
dc.subject.othermikroaaltofi
dc.subject.othertuhkafi
dc.subject.othermyrkylliset alkuaineetfi
dc.titleAn ultrasound-assisted digestion method for the determination of toxic element concentrations in ash samples by inductively coupled plasma optical emission spectrometry
dc.typeArticle
dc.identifier.urnURN:NBN:fi:jyu-2011061611021
dc.contributor.laitosKemian laitosfi
dc.contributor.laitosDepartment of Chemistryen
dc.type.urihttp://purl.org/eprint/type/SubmittedJournalArticle
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.relation.issn0003-2670
dc.type.versionacceptedVersion
dc.rights.copyright© Elsevier
dc.rights.accesslevelopenAccessfi
dc.relation.doidoi:10.1016/j.aca.2007.09.015


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