Accumulation factor reflects the adaptive capacity of plants and is determined by properties of the soil and plants.
According to the accumulation factor in the roots of the plants of the reserve the amount of Co, Cr, Mn, V, Ti, Cu, Zn, Pb, Mo is 2-16 times higher than in aboveground organs (Table 3).
Percentage abundance -- 8.0 30.0 -- 0.5 according to Dobrovolsky Content according to -- 10.0 53.3 4.0 0.9 Ilyin (1991) Content according to -- 3.0-14.3 10.2-35.8 0.1-1.3 -- Groshev and Grigoryeva (2006) Table 3: Microelements accumulation factor in underground parts of the plants as compared with the aboveground parts (data on the content in ash).
Because these are largely lacking, the Guidance depends on the application of controversial food-chain multipliers to convert laboratory-derived concentration factors to accumulation factors
. Many of the accumulation factors
generated thus far are higher than the concentration factors previously used by EPA and many states in the calculation of water-quality criteria.