The new data on ^239+240Pu, ²³⁸Pu, ²⁴¹Pu, ²⁴¹Am vertical distribution in the deep western Black Sea sediments was analyzed. The sediment dating, obtained by means of ²³⁸Pu/^239+240Pu activity ratio vertical distribution, suggested the upper 3 cm layer of sediments to be formed during 27 years after the Chernobyl accident and the deeper layers to be formed earlier in pre-Chernobyl time (before 1986). The whole data set on profiles of radionuclides studied was shown to reflect the history of their input into the basin and elimination of these radionuclides from the water column. Analysis of inventories of plutonium alpha-emitting nuclides ensured a more significant contribution of Chernobyl fallout into the present total ²³⁸Pu inventory than into ^239+240Pu one. The ²⁴¹Am inventory after-deposition enhancement due to ²⁴¹Pu decay was estimated at 74% in pre-Chernobyl sediment layer and the general contribution of ²⁴¹Pu support in the total ²⁴¹Am inventory in situ enhancement was estimated at 49%.

分析了黑海西部西部沉积物中^{239 + 240} Pu，²³⁸ Pu，²⁴¹ Pu，²⁴¹ Am垂直分布的新数据。通过²³⁸ Pu / ^{239 + 240}获得的沉积物测年Pu活度比的垂直分布，表明切尔诺贝利事故发生后27年内，上部3厘米的沉积层形成，切尔诺贝利事故发生前（1986年之前），较深层形成。显示了所研究放射性核素剖面的全部数据，以反映其向盆地输入以及从水柱中消除这些放射性核素的历史。对of发射核素的库存进行分析，确保切尔诺贝利尘埃落入当前²³⁸ pu的总存量比^{239 + 240} Pu的贡献更大。切尔诺贝利前沉积层中²⁴¹ Pu衰减引起的²⁴¹ Am沉积后沉积增强估计为74％，在总计²⁴¹ Am的原位增强库存中，²⁴¹ Pu支持估计为49％。