Table 5.

Age-dependent parameters of the ¹³⁷Cs intake function (Eq. 16) for residents of rural and semirural settlements

Parameter	Age group
	Newborn	1 year	5 year	10 year	15 year	Adult
${\lambda }_{Cs,k},{\text{d}}^{-1}$	0.043	0.053	0.028	0.017	0.0075	0.0063
Rural settlements
Aggregated 137Cs soil to cow’s milk transfer coefficient less than 0.3 Bq L−1 per kBq m−2
$a_{1,k}$, Bq per kBq m−2	9	15	40	80	440	740
$a_{2,k}$, Bq per kBq m−2	0.6	1	2.5	4.5	13	20
${\lambda }_{1,k},d^{-1}$	3.18 × 10−3
${\lambda }_{2,k},d^{-1}$	1.1 × 10−4
Aggregated 137Cs soil to cow’s milk transfer coefficient of 0.3 – 1.0 Bq L−1 per kBq m−2
$a_{1,k}$, Bq per kBq m−2	8	14	36	70	400	700
$a_{2,k}$, Bq per kBq m−2	0.6	1	2.5	5	15	23
${\lambda }_{1,k},d^{-1}$	2.53 × 10−3
${\lambda }_{2,k},d^{-1}$	1.1 × 10−4
Aggregated 137Cs soil to cow’s milk transfer coefficient of 1.0 – 5.0 Bq L−1 per kBq m−2
$a_{1,k}$, Bq per kBq m−2	34	80	220	420	1650	2400
$a_{2,k}$, Bq per kBq m−2	6	8	20	38	114	190
${\lambda }_{1,k},d^{-1}$	2.53 × 10−3
${\lambda }_{2,k},d^{-1}$	7.0 × 10−5
Aggregated 137Cs soil to cow’s milk transfer coefficient more than 5.0 Bq L−1 per kBq m−2
$a_{1,k}$, Bq per kBq m−2	180	400	1320	2500	9500	14,400
$a_{2,k}$, Bq per kBq m−2	30	50	120	228	600	900
${\lambda }_{1,k},d^{-1}$	2.53 × 10−3
${\lambda }_{2,k},d^{-1}$	7.0 × 10−5
Semirural settlement
$a_{1,k}$, Bq per kBq m−2	4	7	21	41	180	280
$a_{2,k}$, Bq per kBq m−2	0.3	0.5	1.2	3	7	11
${\lambda }_{1,k},d^{-1}$	3.18 × 10−3
${\lambda }_{2,k},d^{-1}$	1.1 × 10−4