Assessment of the determination of heavy metals in organic soil improvers by ICP–OES

Estimation of the uncertainty of the measurement results of some trace levels elements in document paper samples using ICP-MS

“…34 Currently, there are various approaches for the overall measurement uncertainty estimation, reviewed by different authors: 24,35,36 bottom-up, error-budget, error-propagation or component-by-component approach; 5,37 top-down approach; 22 validation-based approach; 5,10 tness for purpose approach; 38 robustness-based; 24,32 accuracy prole approach; 39,40 differential approach. 41 In the traditional approach, namely bottom-up approach, the overall uncertainty is obtained by identifying, quantifying and combining all individual contributions to uncertainty. Initially developed for physical measurements this approach was adopted by EURACHEM for the chemical measurements.…”

“…Applying the differential approach can be developed detailed models of the performance of complex measurements, allowing the assessment of the individual precision components of the various analytical steps. 41 In the present study measurement uncertainty is estimated using the GUM bottom-up approach. The analytical method was developed and validated for simultaneous determination of 8 elements (Al, Ba, Fe, Mg, Mn, Pb, Sr, Zn) from document paper using inductively coupled plasma-mass spectrometry (ICP-MS).…”