Workshop 2: Calibration for Analytical Measurements
Presenter: Dr. Nimal DeSilva
- Faculty Scientist/Manager, Geochemistry Core-Facility,
- Advanced Research Complex, University of Ottawa,
- Ontario, Canada K1N 6N5
- ndesilva@uottawa.ca
Date / Time: Tuesday, April 25, 2023. / 9:00 am - 12:00 pm
Course Length: ½ day
Course Description:
- Overview of Basic Statistics
- Types and Propagation of Errors
- Signal Noise, Uncertainty and Dynamic Range
- Linear and Non-linear Regression for Calibration
- Weighted versus Un-Weighted Regression
- Optimum selection of Calibration Range and Standard Intervals
- Gravimetric versus Volumetric standards, and their Preparation
- Real World: Non-Linearity, Matrix effects, Blanks, Signal Drift
- Remedies: Standard Addition, Internal Standards, Drift Correction, Non-linear Calibration, Use of multiple responses
- Use and Misuse of Dynamic Range
- Evaluation and Visualization of Calibrations and Data from Large Data sets using EXCEL
Although the material discussed is universally applicable, examples will be taken mainly from ICP-ES, ICP-MS and Chromatography.