Uncertainty sources in UV-Vis spectrophotometric measurement

  title={Uncertainty sources in UV-Vis spectrophotometric measurement},
  author={Lilli Soov{\"a}li and Eva-Ingrid R{\~o}{\~o}m and Agnes K{\"u}tt and Ivari Kaljurand and Ivo Leito},
  journal={Accreditation and Quality Assurance},
An overview is given of the most important uncertainty sources that affect analytical UV-Vis spectrophotometric measurements. Altogether, eight uncertainty sources are discussed that are expected to have influence in chemical analysis. It is demonstrated that the well-known intrinsic (or “physical”) sources of uncertainty that originate from the instrument itself (repeatability of spectrophotometer reading, spectrophotometer drift, stray light, etc.) often have significantly lower contributions… 

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