English to Russian Medical Chemistry; Chem Sci/Eng Assessment of mercury in hair

In our case, two hair reference materials containing different mercury levels, namely NIES CRM No.13 (4.42 42 ng/mg) and Reference Material IAEA-086 (0.573 573 ng/mg), have been used to determine the accuracy of the method.
The different levels of mercury included in the calibration (see Section 2.5) were measured to establish the accuracy for each level.
The relative recovery rates are summarized in the Table 5.
The recovery rates, taking into account the measurement uncertainty, must include 100%.
If this is not the case, the initial concentration point of the calibration curve should be re-evaluated according to the LOQ obtained for the method.