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本文报道了￣（８５）Ｓｒ、￣（１３４）Ｃｓ和￣（６０）Ｃｏ在采自本院野外试验场，从地表到地下２ｍ深黄土与地下水间分配系数的测定结果，以及核素浓度、ｐＨ和温度对分配系数的影响。黄土采集的深度范围分别为：地表－０．５ｍ，０．５－１ｍ，１－１．５ｍ，１．５－２ｍ，共采集１６个样品；地下水取自试验场的井水。实验采用静态法。实验结果表明，１６个样品测定的￣（８５）Ｓｒ、￣（１３４）Ｃｓ和￣（６０）Ｃｏ的分配系数的均值分别为８２、７．４×１０￣３和５．４×１０￣３ｍＬ／ｇ；在不同深度的黄土中测得的分配系数基本一致。ｐＨ值的变化对￣（１３４）Ｃｓ和￣（８５）Ｓｒ的分配系数有较大影响，对￣（６０）Ｃｏ则影响不大。
This paper reports the results of the determination of the distribution coefficients of ¯ (85) Sr, ¯ (134) Cs and ¯ (60) Co in the field test field collected from our institute, the distribution coefficient of loess and groundwater 2 m deep from the surface to the ground, Effect of pH and temperature on the partition coefficient. The depth ranges of loess collection are respectively -0.5m, 0.5-1m, 1-1.5m and 1.5-2m on the surface, a total of 16 samples were collected; groundwater was taken from well water in the test site. Experiment using static method. The experimental results show that the mean values of distribution coefficients of ~ (85) Sr, ~ (134) Cs and ~ (60) Co measured by 16 samples are 82, 7.4 × 10 ~ 3 and 5.4 × 10 ~ 3mL / G; distribution coefficients measured in loess at different depths are basically the same. The change of pH value has a great influence on the distribution coefficient of ~ (134) Cs and ~ (85) Sr, but has little effect on ~ (60) Co.