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Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements
Published on: September 7, 2019
[Measurement uncertainty in drinking water analysis. Conclusions from interlaboratory tests]
1Institut für Siedlungswasserbau, Wassergüte- und Abfallwirtschaft, Abt. Hydrochemie Bandtäle 2, 70569 Stuttgart, BRD. Michael.Koch@iswa.uni-stuttgart.de
Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
|October 3, 2006
Summary
This study addresses measurement uncertainty in drinking water analysis, comparing laboratory data to legal requirements. It provides data to aid uncertainty estimation and inform future drinking water legislation.
Area of Science:
- Environmental Science
- Analytical Chemistry
- Water Quality Management
Background:
- Measurement uncertainty is critical for compliance with drinking water legislation.
- Current analytical method requirements pose challenges for laboratories.
- Accurate estimation of uncertainty is essential for reliable water quality assessment.
Purpose of the Study:
- To analyze measurement uncertainty in drinking water parameters.
- To compare calculated uncertainties with legal standards for analytical methods.
- To provide data for improving uncertainty estimation and legislation.
Main Methods:
- Utilized interlaboratory test data for 75 drinking water parameters.
- Applied a variance function (DIN 38402-45) to determine concentration-dependent reproducibility standard deviations.
- Calculated mean standard deviations at legal limits with high confidence.
Main Results:
- Established concentration-dependent reproducibility standard deviations for 75 drinking water parameters.
- Calculated reliable mean standard deviations at legal limits.
- Compared calculated values against drinking water legislation requirements.
Conclusions:
- The generated data aids laboratories in estimating and validating measurement uncertainties.
- Findings can inform official interpretations and the development of new drinking water legislation requirements.
- This research bridges the gap between analytical practice and regulatory standards.
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