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Research output

Quality Assurance and Quality Control in Forest Soil Analysis: 5th FSCC Interlaboratory Comparison

Research output: Book/ReportReports of Research Institute for Nature and Forest

Standard

Quality Assurance and Quality Control in Forest Soil Analysis : 5th FSCC Interlaboratory Comparison. / Cools, Nathalie; Hinsch Mikkelsen, Jari; De Vos, Bruno.

Instituut voor Natuur- en Bosonderzoek, 2007. 87 p. (Rapporten van het Instituut voor Natuur- en Bosonderzoek; No. INBO.R.2007.46).

Research output: Book/ReportReports of Research Institute for Nature and Forest

Harvard

Cools, N, Hinsch Mikkelsen, J & De Vos, B 2007, Quality Assurance and Quality Control in Forest Soil Analysis: 5th FSCC Interlaboratory Comparison. Rapporten van het Instituut voor Natuur- en Bosonderzoek, no. INBO.R.2007.46, Instituut voor Natuur- en Bosonderzoek.

APA

Cools, N., Hinsch Mikkelsen, J., & De Vos, B. (2007). Quality Assurance and Quality Control in Forest Soil Analysis: 5th FSCC Interlaboratory Comparison. (Rapporten van het Instituut voor Natuur- en Bosonderzoek; No. INBO.R.2007.46). Instituut voor Natuur- en Bosonderzoek.

Author

Cools, Nathalie ; Hinsch Mikkelsen, Jari ; De Vos, Bruno. / Quality Assurance and Quality Control in Forest Soil Analysis : 5th FSCC Interlaboratory Comparison. Instituut voor Natuur- en Bosonderzoek, 2007. 87 p. (Rapporten van het Instituut voor Natuur- en Bosonderzoek; INBO.R.2007.46).

Bibtex

@book{9128519cc2f54aa384f0d0fbf7a94347,
title = "Quality Assurance and Quality Control in Forest Soil Analysis: 5th FSCC Interlaboratory Comparison",
abstract = "A total of 48 laboratories reported their results in the 5th FSCC Interlaboratory Comparison 2007. Nine laboratories reported outliers and stragglers for more than 20 {\%} of the total; five based on the between-laboratory variability, and eight laboratories based on the within-laboratory variability.Problem parameters are (1) exchangeable elements, especially Na, Ca, free H+, Mg, Acidity and Fe, (2) the heavy metals Hg and Cd extracted by Aqua Regia, Extractable Al and Mg, (3) carbon content in sample D with low organic carbon content and (4) the pH determination of a peat sample. In general there are more problems when the concentration of the concerning element is relatively low.Compared to the 4th FSCC interlaboratory comparison in 2005, the coefficients of variation of all groups of analysis have improved or remained at a similar level. The CV of the blind sample B improved by 20{\%} mainly because of a large improvement of the analysis of the Aqua Regia extractable elements.The application of the data integrity expert rules could have been better. Several laboratories reported data which violated the rules. The rules might need further refinement, especially concerning peat layers e.g. for pH.",
author = "Nathalie Cools and {Hinsch Mikkelsen}, Jari and {De Vos}, Bruno",
year = "2007",
language = "English",
series = "Rapporten van het Instituut voor Natuur- en Bosonderzoek",
publisher = "Instituut voor Natuur- en Bosonderzoek",
number = "INBO.R.2007.46",
address = "Belgium",

}

RIS

TY - BOOK

T1 - Quality Assurance and Quality Control in Forest Soil Analysis

T2 - 5th FSCC Interlaboratory Comparison

AU - Cools, Nathalie

AU - Hinsch Mikkelsen, Jari

AU - De Vos, Bruno

PY - 2007

Y1 - 2007

N2 - A total of 48 laboratories reported their results in the 5th FSCC Interlaboratory Comparison 2007. Nine laboratories reported outliers and stragglers for more than 20 % of the total; five based on the between-laboratory variability, and eight laboratories based on the within-laboratory variability.Problem parameters are (1) exchangeable elements, especially Na, Ca, free H+, Mg, Acidity and Fe, (2) the heavy metals Hg and Cd extracted by Aqua Regia, Extractable Al and Mg, (3) carbon content in sample D with low organic carbon content and (4) the pH determination of a peat sample. In general there are more problems when the concentration of the concerning element is relatively low.Compared to the 4th FSCC interlaboratory comparison in 2005, the coefficients of variation of all groups of analysis have improved or remained at a similar level. The CV of the blind sample B improved by 20% mainly because of a large improvement of the analysis of the Aqua Regia extractable elements.The application of the data integrity expert rules could have been better. Several laboratories reported data which violated the rules. The rules might need further refinement, especially concerning peat layers e.g. for pH.

AB - A total of 48 laboratories reported their results in the 5th FSCC Interlaboratory Comparison 2007. Nine laboratories reported outliers and stragglers for more than 20 % of the total; five based on the between-laboratory variability, and eight laboratories based on the within-laboratory variability.Problem parameters are (1) exchangeable elements, especially Na, Ca, free H+, Mg, Acidity and Fe, (2) the heavy metals Hg and Cd extracted by Aqua Regia, Extractable Al and Mg, (3) carbon content in sample D with low organic carbon content and (4) the pH determination of a peat sample. In general there are more problems when the concentration of the concerning element is relatively low.Compared to the 4th FSCC interlaboratory comparison in 2005, the coefficients of variation of all groups of analysis have improved or remained at a similar level. The CV of the blind sample B improved by 20% mainly because of a large improvement of the analysis of the Aqua Regia extractable elements.The application of the data integrity expert rules could have been better. Several laboratories reported data which violated the rules. The rules might need further refinement, especially concerning peat layers e.g. for pH.

M3 - Reports of Research Institute for Nature and Forest

T3 - Rapporten van het Instituut voor Natuur- en Bosonderzoek

BT - Quality Assurance and Quality Control in Forest Soil Analysis

PB - Instituut voor Natuur- en Bosonderzoek

ER -

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