90Sr in northern Sweden : Relationships and annual variations from 1961 to 1969 in lichen, reindeer and man
Persson, Bertil R. LU
(1971)
In Health Physics
20(4).
p.393-402
- Abstract
The transport of fallout-90Sr has been investigated in the food-chain: Lichen-reindeer-man during 1961-1969. The maximum levels which occurred in lichen during 1963-1965 were about 13 nCi/kg dry wt. The90Sr-level in the lichen-carpet decreased to about 5 nCi/kg dry wt. in 1967-1969. The effective half-time of 90Sr in the lichen-carpet was estimated to be 2.5 ± 0.8 a. The vertical distribution of90Sr in the lichen-carpet was studied during 1966— 1969 and indicates an increased deposition of90Sr-fallout during 1968-1969. The90Sr/Ca-ratio has also been studied in reindeer-bone and muscle tissues. This ratio increased up to 1965 to about 700 pCi/g in reindeer-meat and to 1000pCi/g in... (More)
The transport of fallout-90Sr has been investigated in the food-chain: Lichen-reindeer-man during 1961-1969. The maximum levels which occurred in lichen during 1963-1965 were about 13 nCi/kg dry wt. The90Sr-level in the lichen-carpet decreased to about 5 nCi/kg dry wt. in 1967-1969. The effective half-time of 90Sr in the lichen-carpet was estimated to be 2.5 ± 0.8 a. The vertical distribution of90Sr in the lichen-carpet was studied during 1966— 1969 and indicates an increased deposition of90Sr-fallout during 1968-1969. The90Sr/Ca-ratio has also been studied in reindeer-bone and muscle tissues. This ratio increased up to 1965 to about 700 pCi/g in reindeer-meat and to 1000pCi/g in bone, and then there was a decrease to about 400 pCi/g in both meat and bone in 1969. The seasonal variation of the 90Sr/Ca-ratio in reindeer-meat and bone since 1965 was evaluated from the 90Sr/Ca-ratio in lichen by using a three-compartment model for the Sr-retention in reindeer. The90Sr/Ca-ratio in the skeleton of adult Swedish Lapps was calculated from the 90Sr/Ca-ratio estimated for diet. The absorbed dose delivered by90Sr +90Y during the period 1950-1970 has been estimated to be 30 mrad to the endosteum (cells lining bone-surfaces) and 20 mrad to the active bone-marrow. Corresponding absorbed dose values for the whole period 1950-2000 were estimated to be 80 ± 15 mrad to the whole endosteum and 50 ± 10 mrad to the bone-marrow.
(Less)
- author
- Persson, Bertil R.
LU
- organization
- publishing date
- 1971-01-01
- type
- Contribution to journal
- publication status
- published
- in
- Health Physics
- volume
- 20
- issue
- 4
- pages
- 10 pages
- publisher
- Lippincott Williams & Wilkins
- external identifiers
-
- pmid:5563855
- scopus:0015045617
- ISSN
- 0017-9078
- DOI
- 10.1097/00004032-197104000-00004
- language
- English
- LU publication?
- yes
- id
- c616e016-bfb8-48dc-8ac1-6009c7e8d23f
- date added to LUP
- 2020-08-30 21:12:25
- date last changed
- 2024-01-02 17:29:39
@article{c616e016-bfb8-48dc-8ac1-6009c7e8d23f,
abstract = {{<p>The transport of fallout-<sup>90</sup>Sr has been investigated in the food-chain: Lichen-reindeer-man during 1961-1969. The maximum levels which occurred in lichen during 1963-1965 were about 13 nCi/kg dry wt. The<sup>90</sup>Sr-level in the lichen-carpet decreased to about 5 nCi/kg dry wt. in 1967-1969. The effective half-time of 90Sr in the lichen-carpet was estimated to be 2.5 ± 0.8 a. The vertical distribution of<sup>90</sup>Sr in the lichen-carpet was studied during 1966— 1969 and indicates an increased deposition of<sup>90</sup>Sr-fallout during 1968-1969. The<sup>90</sup>Sr/Ca-ratio has also been studied in reindeer-bone and muscle tissues. This ratio increased up to 1965 to about 700 pCi/g in reindeer-meat and to 1000pCi/g in bone, and then there was a decrease to about 400 pCi/g in both meat and bone in 1969. The seasonal variation of the 90Sr/Ca-ratio in reindeer-meat and bone since 1965 was evaluated from the 90Sr/Ca-ratio in lichen by using a three-compartment model for the Sr-retention in reindeer. The<sup>90</sup>Sr/Ca-ratio in the skeleton of adult Swedish Lapps was calculated from the 90Sr/Ca-ratio estimated for diet. The absorbed dose delivered by<sup>90</sup>Sr +<sup>90</sup>Y during the period 1950-1970 has been estimated to be 30 mrad to the endosteum (cells lining bone-surfaces) and 20 mrad to the active bone-marrow. Corresponding absorbed dose values for the whole period 1950-2000 were estimated to be 80 ± 15 mrad to the whole endosteum and 50 ± 10 mrad to the bone-marrow.</p>}},
author = {{Persson, Bertil R.}},
issn = {{0017-9078}},
language = {{eng}},
month = {{01}},
number = {{4}},
pages = {{393--402}},
publisher = {{Lippincott Williams & Wilkins}},
series = {{Health Physics}},
title = {{<sup>90</sup>Sr in northern Sweden : Relationships and annual variations from 1961 to 1969 in lichen, reindeer and man}},
url = {{http://dx.doi.org/10.1097/00004032-197104000-00004}},
doi = {{10.1097/00004032-197104000-00004}},
volume = {{20}},
year = {{1971}},
}