有机硅吸附剂对铅、铜土壤污染条件下重金属流动形态含量及试验作物生长的影响

Q4 Agricultural and Biological Sciences Biulleten'' Pochvennogo instituta im VV Dokuchaeva Pub Date : 2023-09-25 DOI:10.19047/0136-1694-2023-116-109-128
P. D. Skurikhina
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引用次数: 0

摘要

土壤重金属污染已成为一个重要的生态问题。污染土壤的再修复通常采用不同类型的吸附剂。因此,在这方面,寻找最有效和多功能的吸附剂是相关的。对土壤表层几种重金属污染进行了模型试验。这项研究的土壤是格雷-鲁维奇·费厄泽姆斯。选择铅(pb2 +)和铜(cu2 +)作为污染物。以3种不同浓度(1 MPC、5 MPC、10 MPC)的乙酸铅(Pb(CH₃COO)₂·3H 2o)和硫酸铜(CuSO₄·7Н 2o)溶液为污染物。有机硅吸附剂- 1,1,3,3,3-四羟基-1,3-二甲基二硅氧烷多水合(PMSPG)溶液也适用于三种不同的变体:0.01%;0.1%;1%。采用原子吸收光谱法研究了重金属的移动形态。采用醋酸铵缓冲液(pH = 4.8)提取重金属的流动形态。结果表明,有机硅吸附剂的应用具有积极的意义。吸附剂的应用显著降低了流动重金属化合物的浓度。应用浓度为1%的PMSPG溶液效果最好。进行了植被试验。以“扎巴瓦”品种芥蓝(Lepidium sativum L.)为试验作物。结果表明,与对照组相比,使用浓度为1%的吸附剂对芥蓝的生长有良好的影响。
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Effect of organosilicon adsorbent on the content of mobile forms of heavy metals and growth of test-crop under conditions of soil contamination with lead and copper
The pollution of soil by heavy metals becomes a prime ecological problem. Recultivation of polluted soil objects is usually made by means of different types of sorbents. So, in this connection the search for the most effective and multifunctional sorbing agent is relevant. The model experiment of soil pollution by several heavy metals in upper soil horizon was carried out. The soil for that research was Grey-Luvic Phaeozems. Lead (Pb 2+ ) and copper (Cu 2+ ) were chosen as pollutants. Solutions of lead acetate (Pb(CH₃COO)₂·3H 2 O) and copper sulphate (CuSO₄·7Н 2 O) of three different concentrations (1 MPC, 5 MPC, 10 MPC) were used as pollutants. Solutions of organosilicon adsorbent – 1,1,3,3,3-tetrahydroxy-1,3-dimethyldisiloxane polyhydrate (PMSPG) were also applied in three different variants: 0.01%; 0.1%; 1%. The mobile forms of heavy metals were researched by method of atomic absorption spectrometry. The mobile forms of heavy metals were extracted by the ammonium acetate buffer (pH = 4.8). According to results, the application of organosilicon sorbent had a positive issue. Application of adsorbent significantly reduced the concentrations of mobile heavy metal compounds. The application of PMSPG solution with concentration of 1% was the most effective. A vegetation experiment was carried out. Cress ( Lepidium sativum L.) of “Zabava” variety was used as a test-crop. Favourable changes in the growth of cress with the use of adsorbent at the concentration of 1% compared to the control variants were revealed.
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来源期刊
CiteScore
0.90
自引率
0.00%
发文量
15
审稿时长
8 weeks
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