2005/03/01 by John C. Travis, Joaquín Campos Acosta, Joaquin Campos Acosta +30
Chemical Engineering · Decision Sciences · Environmental Science · #Analytical Chemistry and Sensors #Scientific Measurement and Uncertainty Evaluation #Water Quality Monitoring and Analysis
paper · doi:10.1063/1.1835331
openalex publication_date 2005/03/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/22
The transmittance minima of 18 absorption bands of a solution of 40 g/L holmium oxide in 10% (volume fraction) perchloric acid are certified as intrinsic traceable wavelength standards, by means of a multicenter measurement on material from a single source coupled with comparisons of a variety of preparations of the material evaluated on a single instrument. Fit-for-purpose artifact standards for the experimental calibration or validation of wavelength scales of chemical spectrophotometers can be carefully produced by end users themselves or by commercial standards producers. The intrinsic (data) standard confers traceability to the SI unit of length in place of costly transfer artifacts and repetitive calibration procedures. Certified values are provided for instrumental spectral bandwidths of 0.1–3.0 nm in 0.1 nm intervals, and information values are provided to a spectral bandwidth of 10 nm at wider intervals. Expanded uncertainties are typically less than ±0.1 nm for certified band positions.