Evaluation of measurement uncertainties for the determination of total metal content in soils by atomic absorption spectrometry
In this work estimation of measurement uncertainties associated with the total metal content in soils was done by an intralaboratory approach based on method validation and quality control data, and using two certified reference materials (CRM). CRM and soil samples were analyzed following procedure...
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| Veröffentlicht in: | Accreditation and quality assurance 2009-02, Vol.14 (2), p.87-93 |
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| creator | Alves, Sheila Correia dos Santos, Margarida Maria Trancoso, Maria Ascensão |
| description | In this work estimation of measurement uncertainties associated with the total metal content in soils was done by an intralaboratory approach based on method validation and quality control data, and using two certified reference materials (CRM). CRM and soil samples were analyzed following procedures based on the methods that are applied to silicate materials. All elements were determined by atomic absorption spectrometry following a quality assurance program previously established. Quality control actions were implemented in order to provide reliable data. The precision under within-laboratory reproducibility conditions was estimated from triplicate analysis. The trueness component was determined as recovery of the analyte from CRMs: soil sample, SO-2 and river clay sediment, LGC 6139. Combined measurement uncertainty was expressed in terms of precision and recovery uncertainties and the later further split on CRM replicate analysis and uncertainty of the certified value components. The results obtained are critically discussed on the basis of the different contributions. For the selection of the reference material, the CRM dependent terms are critically compared in order to fulfill specific requirements. |
| doi_str_mv | 10.1007/s00769-008-0484-5 |
| format | Article |
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CRM and soil samples were analyzed following procedures based on the methods that are applied to silicate materials. All elements were determined by atomic absorption spectrometry following a quality assurance program previously established. Quality control actions were implemented in order to provide reliable data. The precision under within-laboratory reproducibility conditions was estimated from triplicate analysis. The trueness component was determined as recovery of the analyte from CRMs: soil sample, SO-2 and river clay sediment, LGC 6139. Combined measurement uncertainty was expressed in terms of precision and recovery uncertainties and the later further split on CRM replicate analysis and uncertainty of the certified value components. The results obtained are critically discussed on the basis of the different contributions. 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CRM and soil samples were analyzed following procedures based on the methods that are applied to silicate materials. All elements were determined by atomic absorption spectrometry following a quality assurance program previously established. Quality control actions were implemented in order to provide reliable data. The precision under within-laboratory reproducibility conditions was estimated from triplicate analysis. The trueness component was determined as recovery of the analyte from CRMs: soil sample, SO-2 and river clay sediment, LGC 6139. Combined measurement uncertainty was expressed in terms of precision and recovery uncertainties and the later further split on CRM replicate analysis and uncertainty of the certified value components. The results obtained are critically discussed on the basis of the different contributions. For the selection of the reference material, the CRM dependent terms are critically compared in order to fulfill specific requirements.</description><subject>Absorption spectroscopy</subject><subject>Acids</subject><subject>Analytical Chemistry</subject><subject>Atomic absorption analysis</subject><subject>Biochemistry</subject><subject>Calibration</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Commercial Law</subject><subject>Control data (computers)</subject><subject>Decomposition</subject><subject>Ecotoxicology</subject><subject>Exact sciences and technology</subject><subject>Food Science</subject><subject>Humidity</subject><subject>Marketing</subject><subject>Practitioner's Report</subject><subject>Quality assurance</subject><subject>Quality control</subject><subject>Reagents</subject><subject>Recovery</subject><subject>Reference materials</subject><subject>Scientific imaging</subject><subject>Soil analysis</subject><subject>Spectrometric and optical methods</subject><subject>Spectrometry</subject><subject>Uncertainty</subject><issn>0949-1775</issn><issn>1432-0517</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp1kE1PAyEQhonRxPrxA7yRGI-rsMDCHo2pH0kTL3omLJ1Vml2owJr05F-X2kZPXmYO8z7vzLwIXVByTQmRN6mUpq0IURXhilfiAM0oZ3VFBJWHaEZa3lZUSnGMTlJaEUKFomyGvuafZphMdsHj0OMRTJoijOAznryFmI3z2UHCfYg4vwNeQoY4Ov-L5JDNUMBttcHnLeo8TsENCXcbbHIYncWmSyGuf6C0BptjKEjcnKGj3gwJzvf9FL3ez1_uHqvF88PT3e2isow3ueqNgE42glHFGi4IsUujoOMdJUopVh7tOslkKxsO7dKSpbWCNb0VhCnRU2Cn6HLnu47hY4KU9SpM0ZeVum6pbGvORFtUdKeyMaQUodfr6EYTN5oSvc1Z73LWJWe9zVmLwlztnU2yZuij8dalX7CmTDBOm6Krd7pURv4N4t8F_5t_A4Omj9o</recordid><startdate>20090201</startdate><enddate>20090201</enddate><creator>Alves, Sheila</creator><creator>Correia dos Santos, Margarida Maria</creator><creator>Trancoso, Maria Ascensão</creator><general>Springer-Verlag</general><general>Springer</general><general>Springer Nature B.V</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7XB</scope><scope>88C</scope><scope>8FE</scope><scope>8FG</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>M0T</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope></search><sort><creationdate>20090201</creationdate><title>Evaluation of measurement uncertainties for the determination of total metal content in soils by atomic absorption spectrometry</title><author>Alves, Sheila ; Correia dos Santos, Margarida Maria ; Trancoso, Maria Ascensão</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c346t-fa5eb765318364500cda8eb4b108883432bb7379764e9dc0dcc536fc50385f1e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Absorption spectroscopy</topic><topic>Acids</topic><topic>Analytical Chemistry</topic><topic>Atomic absorption analysis</topic><topic>Biochemistry</topic><topic>Calibration</topic><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Commercial Law</topic><topic>Control data (computers)</topic><topic>Decomposition</topic><topic>Ecotoxicology</topic><topic>Exact sciences and technology</topic><topic>Food Science</topic><topic>Humidity</topic><topic>Marketing</topic><topic>Practitioner's Report</topic><topic>Quality assurance</topic><topic>Quality control</topic><topic>Reagents</topic><topic>Recovery</topic><topic>Reference materials</topic><topic>Scientific imaging</topic><topic>Soil analysis</topic><topic>Spectrometric and optical methods</topic><topic>Spectrometry</topic><topic>Uncertainty</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Alves, Sheila</creatorcontrib><creatorcontrib>Correia dos Santos, Margarida Maria</creatorcontrib><creatorcontrib>Trancoso, Maria Ascensão</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Healthcare Administration Database (Alumni)</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Materials Science Collection</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>SciTech Premium Collection</collection><collection>Materials Science Database</collection><collection>Healthcare Administration Database</collection><collection>Materials Science Collection</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><jtitle>Accreditation and quality assurance</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Alves, Sheila</au><au>Correia dos Santos, Margarida Maria</au><au>Trancoso, Maria Ascensão</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Evaluation of measurement uncertainties for the determination of total metal content in soils by atomic absorption spectrometry</atitle><jtitle>Accreditation and quality assurance</jtitle><stitle>Accred Qual Assur</stitle><date>2009-02-01</date><risdate>2009</risdate><volume>14</volume><issue>2</issue><spage>87</spage><epage>93</epage><pages>87-93</pages><issn>0949-1775</issn><eissn>1432-0517</eissn><abstract>In this work estimation of measurement uncertainties associated with the total metal content in soils was done by an intralaboratory approach based on method validation and quality control data, and using two certified reference materials (CRM). CRM and soil samples were analyzed following procedures based on the methods that are applied to silicate materials. All elements were determined by atomic absorption spectrometry following a quality assurance program previously established. Quality control actions were implemented in order to provide reliable data. The precision under within-laboratory reproducibility conditions was estimated from triplicate analysis. The trueness component was determined as recovery of the analyte from CRMs: soil sample, SO-2 and river clay sediment, LGC 6139. Combined measurement uncertainty was expressed in terms of precision and recovery uncertainties and the later further split on CRM replicate analysis and uncertainty of the certified value components. The results obtained are critically discussed on the basis of the different contributions. 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| subjects | Absorption spectroscopy Acids Analytical Chemistry Atomic absorption analysis Biochemistry Calibration Chemistry Chemistry and Materials Science Commercial Law Control data (computers) Decomposition Ecotoxicology Exact sciences and technology Food Science Humidity Marketing Practitioner's Report Quality assurance Quality control Reagents Recovery Reference materials Scientific imaging Soil analysis Spectrometric and optical methods Spectrometry Uncertainty |
| title | Evaluation of measurement uncertainties for the determination of total metal content in soils by atomic absorption spectrometry |
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