Sampling and analytical quality Control (SAX) for improved error estimation in the measurement of Pb in the environment using robust analysis of variance
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Cited by (44)
Spatial and geochemical aspects of heavy metal distribution in lacustrine sediments, using the example of Lake Wigry (Poland)
2020, ChemosphereCitation Excerpt :The obtained geochemical data was quality tested by way of an analysis of variance with Robust statistics method. It assumes that technical variance (combined sampling and analytical variances) for the geochemical data should not exceed 20% of the total variance (Ramsey et al., 1992; Ramsey, 1993). Technical variance for the Wigry Lake data did not exceed the limit value and amounted to 20% for Fe, 11% for Mn and 16% for Zn.
Estimating the uncertainty from sampling in pollution crime investigation: The importance of metrology in the forensic interpretation of environmental data
2018, Forensic Science InternationalCitation Excerpt :This is particularly troublesome when dealing with environmental samples where systematic and standardized procedures are more difficult to be carried on and, for this, require more research efforts. Before that, there were some articles on the subject of sampling uncertainty, mostly in the field of applied geochemistry (e.g. [6–10] until 2007, when two major publications were released, the NORDTEST Handbook “Uncertainty from sampling — A Nordtest handbook for sampling planners on sampling quality assurance and uncertainty estimation” [11] and the guidance upon which this is based, the EURACHEM/CITAC Guide “Measurement uncertainty arising from sampling: a guide to methods and approaches” [12]. After that, there were few publications addressing the topic of uncertainty of sampling in environmental investigations (e.g. [1,13–18]).
Use of measurement uncertainty in a probabilistic scheme to assess compliance of bottled water with drinking water standards
2010, Journal of Geochemical ExplorationCitation Excerpt :Therefore, the sampling procedure to be followed is to take the first primary water sample at a specified hour, and subsequently, after a suitable interval, but within the same hour, to collect the second primary water sample. Both water samples should be analysed in replicate in order to produce results according to a hierarchical nested balance design (AMC, 2009; Argyraki and Petrakaki, 2010; Johnson, 2011; Lee and Ramsey, 2001; Ramsey, 1997, 1993, 1998, 2009; Ramsey and Argyraki, 1997; Ramsey and Ellison, 2007; Ramsey et al., 1992). In this paper, the quadruple replicate analyses, performed at different periods on the same bottled water, were used in order to show the procedure, and in this case the main source of heterogeneity, and resulting uncertainty, was caused by the temporal changes of the geochemistry of water from the same brand of bottled water, and any effects due to the bottling material.
Measurement uncertainty in the determination of total petroleum hydrocarbons (TPH) in soil by GC-FID
2008, Chemometrics and Intelligent Laboratory SystemsIII.1 Assessment of pollution potential from solid waste
2004, Waste Management Series