文章摘要
杨明瑶,吉恒莹,李磐.富里酸对聚乙烯微塑料污染土壤水分入渗过程的影响[J].农业环境科学学报,2024,43(5):1092-1099.
富里酸对聚乙烯微塑料污染土壤水分入渗过程的影响
Effects of fulvic acid on the water infiltration of soil contaminated by polyethylene microplastics
投稿时间:2023-05-11  
DOI:10.11654/jaes.2023-0363
中文关键词: 富里酸  微塑料  聚乙烯  土柱  迁移
英文关键词: fulvic acid  microplastic  polyethylene  soil column  migration
基金项目:农业农村部西北绿洲农业环境重点试验室开放基金项目(XBLZ-20212);新疆维吾尔自治区自然基金项目(2022D01A96)
作者单位E-mail
杨明瑶 新疆师范大学化学化工学院, 乌鲁木齐 830054  
吉恒莹 新疆师范大学化学化工学院, 乌鲁木齐 830054
农业农村部西北绿洲农业环境重点实验室, 乌鲁木齐 830091 
jihengying@126.com 
李磐 农业农村部西北绿洲农业环境重点实验室, 乌鲁木齐 830091
新疆农业科学院土壤肥料与农业节水研究所, 乌鲁木齐 830091 
 
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中文摘要:
      为研究富里酸对聚乙烯污染土壤水分入渗过程的影响,本研究通过土柱一维垂直入渗试验,分别在含有质量比为0.1%、1%和3%荧光染色聚乙烯污染的土壤中添加0.3%的富里酸进行探究。结果表明:与空白土壤相比,0.1%、1%聚乙烯均减少土壤表面孔状结构和粗糙度,抑制土壤水分入渗速率,减小土壤饱和导水率,3%聚乙烯增加土壤表面孔状结构和粗糙度,降低入渗速率和饱和导水率;施加0.3%富里酸后,0.1%、1%和3%聚乙烯污染土壤表面孔状结构增多,粗糙度增大,水分入渗速率降低,饱和导水率随聚乙烯含量增大而增大,但较不施加富里酸前的饱和导水率分别下降48.75%、32.01%和3.64%;添加0.3%富里酸,可使聚乙烯微塑料在土壤中垂直向下的迁移速度分别提高33.33%、37.50%和38.33%。研究表明,富里酸增加了聚乙烯污染土壤的孔状结构和粗糙度,降低了聚乙烯污染土壤的水分入渗速率和饱和导水率,同时提高了聚乙烯在土壤中垂直向下的迁移速度。
英文摘要:
      To study the effect of fulvic acid on the water infiltration of polyethylene-contaminated soil, 0.3% fulvic acid was added to contaminated soil containing 0.1%, 1%, and 3% fluorescent-stained polyethylene and analyzed by one-dimensional vertical infiltration test of the soil column . The key results of the study were listed below: compared with the blank soil, 0.1% and 1% polyethylene reduced the pore structure and roughness of the soil surface(inhibiting soil water infiltration and reducing the soil saturated water conductivity), whereas 3% polyethylene increased the soil surface pore structure and roughness(reducing the infiltration rate and saturated water conductivity); after the application of 0.3% fulvic acid of on the soil surface of 0.1%, 1%, and 3% polyethylene pollution, the pore structure increased, the roughness increased, the water infiltration rate decreased, and the saturated water conductivity increased with the increase of polyethylene content; however, the saturated water conductivity decreased by 48.75%, 32.01%, and 3.64%, respectively; and the addition of 0.3% fulvic acid increased the vertical downward migration rate of polyethylene microplastics in the soil by 33.33%, 37.50%, and 38.33%, in the 0.1%, 1%, and 3% polyethylene samples, respectively. Thus, fulvic acid increases the pore structure and roughness of polyethylene-contaminated soil, which can reduce the water infiltration rate and saturated water conductivity and improve the vertical downward migration rate of polyethylene in the soil.
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