Schuller P, Løvengreen C, Handl J
Instituto de Física, Universidad Austral de Chile, Valdivia.
Health Phys. 1993 Feb;64(2):157-61. doi: 10.1097/00004032-199302000-00005.
Soil, prairie plants, and milk samples were collected at 39 dairy farms in the 9th and 10th Region in Southern Chile (38 degrees 44'-41 degrees 08' S) between 1982 and 1990. 137Cs concentrations found in soil, plant, and milk samples ranged from 3.8-17.1 Bq kg-1 for soil, from < 0.3-20 Bq kg-1 dry mass for plants, and from 0.10-0.71 Bq kg-1 for milk. Cesium concentration levels resulting from soil sample measurements exhibit a close similarity with corresponding values found in soils from Central Europe before 1986. The concentration ratio prairie plants:soil ranged from 0.05-0.62, 0.52-5.0, and < 0.02-0.40 corresponding to Dystrandepts, Placandepts, and Palehumults soil groups, respectively. At seven selected dairy farms in the vicinity of Valdivia city (10th Region), soil, prairie plant, and milk samples were taken yearly during the grazing period between 1982 and 1990. Results obtained from soil samples taken after April 1986 show no significant increase of the 137Cs concentration. Concentrations in plants and milk for 137Cs decreased during the observation time. 134Cs (as an indicator of Chernobyl fallout) was not found in soil, plant, or milk samples during 1986-1990.
1982年至1990年间，在智利南部第九和第十大区（南纬38度44分 - 41度08分）的39个奶牛场采集了土壤、草原植物和牛奶样本。土壤、植物和牛奶样本中测得的137Cs浓度范围为：土壤中3.8 - 17.1 Bq kg-1，植物干重中< 0.3 - 20 Bq kg-1，牛奶中0.10 - 0.71 Bq kg-1。土壤样本测量所得的铯浓度水平与1986年前中欧土壤中的相应值极为相似。草原植物与土壤的浓度比分别为：对应于雏形土、黏化湿润雏形土和强发育湿润老成土土壤组，分别为0.05 - 0.62、0.52 - 5.0和< 0.02 - 0.40。在瓦尔迪维亚市（第十大区）附近的七个选定奶牛场，于1982年至1990年的放牧期间每年采集土壤、草原植物和牛奶样本。1986年4月之后采集的土壤样本结果显示，137Cs浓度没有显著增加。在观察期内，植物和牛奶中137Cs的浓度下降。在1986 - 1990年期间，土壤、植物或牛奶样本中未发现134Cs（作为切尔诺贝利沉降物的指标）。
