Assessment of ecotoxicity of tellurium in soils of contrasting properties

IF 5.3 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Emerging Contaminants Pub Date : 2024-03-15 DOI:10.1016/j.emcon.2024.100334

Sergey Kolesnikov, Natalia Evstegneeva, Tatiana Minnikova, Alena Timoshenko, Natalia Tsepina, Kamil Kazeev

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Abstract

The ecotoxicity of tellurium (Te) compounds (oxide and nitrate) is assessed by changing the biological properties of soils of contrasting properties: Haplic Chernozem (Loamic), Eutric Cambisol, and Eutric Arenosol. Soil stability was assessed by the most sensitive and informative biological indicators: microbiological (total number of bacteria), biochemical (catalase and dehydrogenase activity), and phytotoxic (changes in the length of wheat roots and shoots). Te contamination was simulated at concentrations of 0.5, 1, 3, 10, and 30 possible permissible concentrations (PPC). It has been established that already at minimum concentrations of Te (0.5 and 1 PPC), the biological indicators of soils decrease. As a rule, a direct relationship between Te concentration and the degree of deterioration of the studied soil properties was observed. Te nitrate showed higher ecotoxicity than oxide. A stronger negative effect of Te contamination was manifested 10 and 30 days after contamination. After 90 days, the restoration of the biological properties of the soils was observed. Haplic Chernozem (Loamic) showed greater resistance to Te contamination than Haplic Cambisols Eutric and Eutric Arenosol. The obtained results can be used to predict environmental risks from soil contamination with Te and to develop maximum permissible concentrations of Te in soils of contrasting properties.

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碲在不同性质土壤中的生态毒性评估

通过改变不同性质土壤的生物特性来评估碲（Te）化合物（氧化物和硝酸盐）的生态毒性：这些土壤是：Haplic Chernozem（Loamic）、Eutric Cambisol 和 Eutric Arenosol。土壤稳定性通过最敏感、信息量最大的生物指标进行评估：微生物指标（细菌总数）、生化指标（过氧化氢酶和脱氢酶活性）和植物毒性指标（小麦根和芽长度的变化）。模拟的 Te 污染浓度分别为 0.5、1、3、10 和 30 个可能的允许浓度 (PPC)。结果表明，在 Te 的最低浓度（0.5 和 1 PPC）下，土壤的生物指标就会下降。一般来说，Te 浓度与所研究土壤性质的恶化程度之间存在直接关系。硝酸碲的生态毒性高于氧化碲。碲污染后 10 天和 30 天的负面影响更大。90 天后，土壤的生物特性得到恢复。与 Haplic Cambisols Eutric 和 Eutric Arenosol 相比，Haplic Chernozem（Loamic）对 Te 污染的抵抗力更强。所获得的结果可用于预测土壤受 Te 污染对环境造成的风险，并制定不同性质土壤中 Te 的最大允许浓度。

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来源期刊

Emerging Contaminants Medicine-Public Health, Environmental and Occupational Health

CiteScore

10.00

自引率

6.70%

发文量

审稿时长

44 days

期刊介绍： Emerging Contaminants is an outlet for world-leading research addressing problems associated with environmental contamination caused by emerging contaminants and their solutions. Emerging contaminants are defined as chemicals that are not currently (or have been only recently) regulated and about which there exist concerns regarding their impact on human or ecological health. Examples of emerging contaminants include disinfection by-products, pharmaceutical and personal care products, persistent organic chemicals, and mercury etc. as well as their degradation products. We encourage papers addressing science that facilitates greater understanding of the nature, extent, and impacts of the presence of emerging contaminants in the environment; technology that exploits original principles to reduce and control their environmental presence; as well as the development, implementation and efficacy of national and international policies to protect human health and the environment from emerging contaminants.