Quality and comparability of measurement of potentially toxic elements in urban soils by a group of european laboratories
A study has been conducted to assess the quality and comparability of measurement of aqua-regia-soluble cadmium, chromium, copper, iron, manganese, nickel, lead, and zinc in urban soils within a small cohort of European research laboratories specializing in soil science or environmental analytical chemistry. An initial survey indicated that highly variable levels of analytical quality control (e.g. use of certified reference materials) were routinely implemented in participant laboratories. When a set of soil samples—differing in metal contents and in characteristics such as pH and organic-matter content—were exchanged and analysed, approximately 20% of results differed from target values by more than 25%. A principal-component analysis was applied to data for chromium, copper, nickel, lead, and zinc, and proved successful in assessing overall laboratory performance. The study indicates that greater prominence needs to be given to quality assurance and control if comparable data are to be generated in international, collaborative research projects.
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Format: | artículo biblioteca |
Language: | English |
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Taylor & Francis
2007-02-22
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Subjects: | Urban soil, Potentially toxic elements, Principal-component analysis, |
Online Access: | http://hdl.handle.net/10261/22433 |
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dig-irnas-es-10261-224332013-01-22T23:00:00Z Quality and comparability of measurement of potentially toxic elements in urban soils by a group of european laboratories Davidson, C.M. Nordon, A. Graham, J. U. Ajmone-Marsan, F. Biasioli, M. Duarte, A. C. Díaz Barrientos, Encarnación Grčman, Helena Hodnik, A. Hossack, I. Hursthouse, A.S. Ljung, K. Madrid Díaz, Fernando Otabbong, E. Rodrigues, Sónia M. Urban soil Potentially toxic elements Principal-component analysis A study has been conducted to assess the quality and comparability of measurement of aqua-regia-soluble cadmium, chromium, copper, iron, manganese, nickel, lead, and zinc in urban soils within a small cohort of European research laboratories specializing in soil science or environmental analytical chemistry. An initial survey indicated that highly variable levels of analytical quality control (e.g. use of certified reference materials) were routinely implemented in participant laboratories. When a set of soil samples—differing in metal contents and in characteristics such as pH and organic-matter content—were exchanged and analysed, approximately 20% of results differed from target values by more than 25%. A principal-component analysis was applied to data for chromium, copper, nickel, lead, and zinc, and proved successful in assessing overall laboratory performance. The study indicates that greater prominence needs to be given to quality assurance and control if comparable data are to be generated in international, collaborative research projects. Peer reviewed 2010-03-16T12:04:17Z 2010-03-16T12:04:17Z 2007-02-22 artículo http://purl.org/coar/resource_type/c_6501 International Journal of Environmental Analytical Chemistry 87: 589–601 (2007) 0306-7319 http://hdl.handle.net/10261/22433 10.1080/03067310701297860 en http://www.informaworld.com/10.1080/03067310701297860 none 22195 bytes application/pdf Taylor & Francis |
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Urban soil Potentially toxic elements Principal-component analysis Urban soil Potentially toxic elements Principal-component analysis |
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Urban soil Potentially toxic elements Principal-component analysis Urban soil Potentially toxic elements Principal-component analysis Davidson, C.M. Nordon, A. Graham, J. U. Ajmone-Marsan, F. Biasioli, M. Duarte, A. C. Díaz Barrientos, Encarnación Grčman, Helena Hodnik, A. Hossack, I. Hursthouse, A.S. Ljung, K. Madrid Díaz, Fernando Otabbong, E. Rodrigues, Sónia M. Quality and comparability of measurement of potentially toxic elements in urban soils by a group of european laboratories |
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A study has been conducted to assess the quality and comparability of measurement of aqua-regia-soluble cadmium, chromium, copper, iron, manganese, nickel, lead, and zinc in urban soils within a small cohort of European research laboratories specializing in soil science or environmental analytical chemistry. An initial survey indicated that highly variable levels of analytical quality control (e.g. use of certified reference materials) were routinely implemented in participant laboratories. When a set of soil samples—differing in metal contents and in characteristics such as pH and organic-matter content—were exchanged and analysed, approximately 20% of results differed from target values by more than 25%. A principal-component analysis was applied to data for chromium, copper, nickel, lead, and zinc, and proved successful in assessing overall laboratory performance. The study indicates that greater prominence needs to be given to quality assurance and control if comparable data are to be generated in international, collaborative research projects. |
format |
artículo |
topic_facet |
Urban soil Potentially toxic elements Principal-component analysis |
author |
Davidson, C.M. Nordon, A. Graham, J. U. Ajmone-Marsan, F. Biasioli, M. Duarte, A. C. Díaz Barrientos, Encarnación Grčman, Helena Hodnik, A. Hossack, I. Hursthouse, A.S. Ljung, K. Madrid Díaz, Fernando Otabbong, E. Rodrigues, Sónia M. |
author_facet |
Davidson, C.M. Nordon, A. Graham, J. U. Ajmone-Marsan, F. Biasioli, M. Duarte, A. C. Díaz Barrientos, Encarnación Grčman, Helena Hodnik, A. Hossack, I. Hursthouse, A.S. Ljung, K. Madrid Díaz, Fernando Otabbong, E. Rodrigues, Sónia M. |
author_sort |
Davidson, C.M. |
title |
Quality and comparability of measurement of potentially toxic elements in urban soils by a group of european laboratories |
title_short |
Quality and comparability of measurement of potentially toxic elements in urban soils by a group of european laboratories |
title_full |
Quality and comparability of measurement of potentially toxic elements in urban soils by a group of european laboratories |
title_fullStr |
Quality and comparability of measurement of potentially toxic elements in urban soils by a group of european laboratories |
title_full_unstemmed |
Quality and comparability of measurement of potentially toxic elements in urban soils by a group of european laboratories |
title_sort |
quality and comparability of measurement of potentially toxic elements in urban soils by a group of european laboratories |
publisher |
Taylor & Francis |
publishDate |
2007-02-22 |
url |
http://hdl.handle.net/10261/22433 |
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