李广科;贾午耀;库婷婷;闫微;张英英;姬晓彤;桑楠;

• 1:山西大学环境与资源学院

摘要(Abstract)：

将太原东山新沟垃圾填埋场矿化垃圾筛分为900~300μm、300~150μm、150~105μm、105~90μm和90~0μm共5个不同粒径范围,制备浸出液。在分析不同粒径矿化垃圾浸出液的理化指标基础上,研究了矿化垃圾浸出液对大麦和斑马鱼胚胎生长发育的影响。结果显示,矿化垃圾浸出液p H值随粒径的减小而减小,电导率、CODCr、全盐量和总氮则随粒径的减小而增大。矿化垃圾浸出液对大麦的萌发、根长和芽长均表现出抑制作用,且抑制作用随粒径的减小而显著增加,90~0μm抑制作用最强,具体表现为染毒1 d、2 d和3 d后,大麦种子处理组萌发率为对照组的39.74%、56.38%和59.81%;染毒3 d、5 d和7 d后,根长分别为对照组的57.08%、48.33%和41.66%;芽长分别为对照组的66.60%、64.79%和61.65%。斑马鱼胚胎暴露于不同粒径的矿化垃圾浸出液中,胚胎生长发育的毒害作用与粒径大小呈现明显负相关关系,即在最小粒径90~0μm处理后,卵凝结、血循环异常、孵化率、心包水肿及脊柱畸形影响作用达到最大,这5个指标值分别为40.28%、50.00%、51.39%、31.94%和29.17%。以上研究表明,矿化垃圾浸出液对大麦和斑马鱼胚胎生长发育的毒性效应与矿化垃圾粒径分布显著相关,小粒径矿化垃圾(90~0μm)的生态毒性效应最大。

关键词(KeyWords)： 矿化垃圾;大麦;斑马鱼胚胎;粒径分布

Abstract:

Keywords:

基金项目(Foundation): 山西省科技攻关计划(20120313009-2);; 高等学校博士学科点专项科研基金项目(20121401110003)

作者(Author): 李广科;贾午耀;库婷婷;闫微;张英英;姬晓彤;桑楠;

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DOI:

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