Determination of manganese in cow blood using the flameless atomic absorption spectrophotometry. I. Analytical parameters of the precision and accuracy of the method

A method for blood manganese measurements has been described. The method provides high reproducibility of the concentrations measured. The coefficients of variation were 3.4% and 4.1 % for within-run and between-runs, respectively. The recovery of the method was 98.1 %. Manganese concentrations in the blood ranged from 6.27 ng/ml to 8.98 ng/ml. The measurements revealed that contamination of tubes containing samples and prepared for determination can be the cause of the divergence of the results obtained.