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微塑料对冰生消及密度的影响研究

王志超 康延秋 李卫平 窦雅娇 李嘉辰 杨文焕

王志超,康延秋,李卫平,等.微塑料对冰生消及密度的影响研究[J].环境工程技术学报,2024,14(3):750-757 doi: 10.12153/j.issn.1674-991X.20230700
引用本文: 王志超,康延秋,李卫平,等.微塑料对冰生消及密度的影响研究[J].环境工程技术学报,2024,14(3):750-757 doi: 10.12153/j.issn.1674-991X.20230700
WANG Z C,KANG Y Q,LI W P,et al.Study on the effect of microplastics on ice formation, melting and density[J].Journal of Environmental Engineering Technology,2024,14(3):750-757 doi: 10.12153/j.issn.1674-991X.20230700
Citation: WANG Z C,KANG Y Q,LI W P,et al.Study on the effect of microplastics on ice formation, melting and density[J].Journal of Environmental Engineering Technology,2024,14(3):750-757 doi: 10.12153/j.issn.1674-991X.20230700

微塑料对冰生消及密度的影响研究

doi: 10.12153/j.issn.1674-991X.20230700
基金项目: 内蒙古自治区自然科学基金项目(2023MS05016)
详细信息
    作者简介:

    王志超(1988—),男,副教授,博士,主要从事水土环境治理与修复研究,wzc5658@126.com

    通讯作者:

    李卫平(1973—),男,教授,博士,主要从事北方寒旱区湖泊水生态治理与修复研究,sjlwp@163.com

  • 中图分类号: X524

Study on the effect of microplastics on ice formation, melting and density

  • 摘要:

    随着海洋及淡水中塑料垃圾数量的急剧增加,以乌梁素海为代表的寒区淡水湖泊中微塑料含量增长显著,冰封期结冰会促进微塑料富集于冰盖中,为深入理解微塑料在寒区冰冻区的环境迁移特点,利用自制结冰装置试验模拟湖水结冰期、融冰期,揭示微塑料对冰厚度增长率、消减率以及冰密度的影响。结果表明,微塑料的赋存促进冰生长,并且冰厚度增长值随微塑料丰度增加呈现出先增加后减小的趋势;且微塑料阻碍冰层融化,随着微塑料丰度的增加阻碍作用愈加明显。通过对不同条件下冰样密度进行观测发现,冰密度的变化是微塑料丰度和结冰温度为主导、微塑料粒径存在微弱影响的一种共同作用,微塑料丰度和结冰温度会对冰的生消过程和冰密度的变化造成影响。

     

  • 图  1  结冰装置

    Figure  1.  Icing device

    图  2  冰厚度测量装置

    Figure  2.  Ice thickness measuring device

    图  3  各时期节点的冰厚度

    Figure  3.  Ice thickness value at each stage node

    图  4  不同特征微塑料下在各时间点生长与消减速率

    Figure  4.  Growth and melting rates under different characteristics of microplastics at various time points

    图  5  不同特征微塑料下冰密度的分布情况

    Figure  5.  Distribution of ice density under different characteristics of microplastics

    图  6  不同微塑料丰度下各温度间冰密度的显著性分析

    Figure  6.  Significance analysis of ice density between temperatures at different microplastic abundances

    图  7  −10 ℃时不同微塑料丰度下冰密度间显著性分析

    Figure  7.  Significance analysis of ice density at different microplastic abundances at −10 ℃

    表  1  配水指标

    Table  1.   Water distribution indicators

    指标 数值
    总氮浓度/(mg/L) 1.80
    总磷浓度/(mg/L) 0.128
    化学需氧量/(mg/L) 48.00
    盐度/10−3 14.00
    悬浮物浓度/(mg/L) 2.00
    下载: 导出CSV

    表  2  试验设置

    Table  2.   Experiment setup

    处理编号 微塑料粒径/ μm 微塑料丰度/(个/L)
    Ta-1 550 5
    Ta-2 550 10
    Ta-3 550 15
    Ta-4 950 5
    Ta-5 950 10
    Ta-6 950 15
    Ta-7 1 500 5
    Ta-8 1 500 10
    Ta-9 1 500 15
      注:微塑料类型为PE。
    下载: 导出CSV
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出版历程
  • 收稿日期:  2023-09-28
  • 录用日期:  2024-02-05
  • 修回日期:  2023-12-22

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