A new index is proposed to determine the affinity of heavy metals (HM) to their carrier phases (AHM-fraction), which, in contrast to the traditional index CHM = 100 CHM-fraction/CHM-soil, considers the sum of all metals in the fraction as a share of the bulk content of all HM in the soil. The metal has affinity for the given phase if AHM-fraction > 1; vice versa, the affinity is absent if AHM-fraction < 1. Comparison of the affinity series of metals for a certain phase based on two indices revealed their discrepancy in most cases. The new index can take into consideration the discrepancy in affinity of the given metal for phases extracted by different strength reagents. The effect of the new indicator was tested on several contaminated soils: Haplic Chernozem, Stagnic Phaeozems, and Calcaric Fluvic Arenosol, as well as on two Spolic Technosols. Compared with the index CHM, the results of the new analysis of contaminated soils with the ATM fraction demonstrated that the Zn content in Calcaric Fluvic Arenosol is decreased considerably due to its low buffer capacity. Since the content of organic matter in Calcaric Fluvic Arenosol is insignificant, only organophile elements, such as Cu and Pb, can make up complexes with organic ligands, in contrast to the fixation of Ni and Mn by organic matter in Chernozems. Due to the low buffering capacity of Calcaric Fluvic Arenosol, the mobile forms of Cd and Zn increased, and these forms of Cr decreased. Therefore, the low buffering soil cannot fix Cd and Zn. Increase in contamination in Spolic Technosols (approximate permissible concentration, APC > 5) as compared to the index CHM, the value of the AHM-fraction of metals in the residue (except for cadmium) increased. In addition, the share of Pb and Cu increases in the organic matter. Thus, the use of a new indicator—the affinity of heavy metals to the carrier phases showed their advantage over the traditional index CHM.

提出了一个新的指标来确定重金属 (HM) 对其载体相的亲和力 (AHM-fraction)，与传统指标 CHM = 100 CHM-fraction/CHM-soil 相比，它考虑了所有金属的总和作为土壤中所有 HM 总含量的一部分。如果 AHM-fraction > 1，则金属对给定相具有亲和力；反之亦然，如果 AHM 分数 < 1，则不存在亲和力。基于两个指标对某一相的金属亲和力系列进行比较表明，在大多数情况下它们存在差异。新指标可以考虑给定金属对不同强度试剂提取的相的亲和力差异。在几种受污染的土壤上测试了新指标的效果：Haplic Chernozem、Stagnic Phaeozems 和 Calcaric Fluvic Arenosol，以及两个 Spolic Technosols。与指标 CHM 相比，用 ATM 组分对污染土壤的新分析结果表明，钙质流化溶胶中的 Zn 含量由于其缓冲能力低而显着降低。由于钙质流域溶胶中的有机物含量微不足道，只有 Cu 和 Pb 等亲有机元素可以与有机配体形成络合物，这与黑钙土中有机物对 Ni 和 Mn 的固定形成对比。由于钙质流溶胶缓冲能力低，Cd和Zn的移动形式增加，而这些形式的Cr减少。因此，低缓冲土壤不能固定Cd和Zn。与指数 CHM 相比，Spolic Technosols 中的污染增加（近似允许浓度，APC > 5），残渣（镉除外）中金属的 AHM 分数值增加。此外，有机质中 Pb 和 Cu 的比例增加。因此，使用一种新的指标——重金属对载体相的亲和力显示了它们优于传统指标 CHM 的优势。