土壤中多溴联苯醚对植物根系的毒理效应研究
毕业设计说明书（论文）外文摘要
Title Polybrominated diphenyl ethers on the toxicological effects of plant roots in the soil
Abstract
Polybrominated Diphenyl Ethers (PBDEs) are ubiquitous used fire retardant in the world and have been concerned by people. The hydrophobia characteristics make them sink in the soils and have adverse effects on organisms. In this thesis, using the method of soil culture, by adding different concentrations of decabromodiphenyl ether (Decabromodiphenyl the Ether, BDE-209), determinate the BDE-209 content in the soil and ryegrass in different time periods, and the impact. on ryegrass growth and development. Studies have shown that the BDE-209 bio-accumulation of ryegrass increases as time extends, and was positively correlated with the initially added BDE-209 concentration in the soil . The enrichment of BDE-209 focused in the root epidermis. When the BDE-209 concentration changes from 50 to 100mg/kg, the growth and development of the ryegrass is significantly inhibited.
Keywords DecabromodiphenylEther ryegrass content bio-accumulation growth and development
目 次
1 引言 1
1.1 十溴联苯醚（BDE-209）概述 1
1.2 十溴联苯醚（BDE-209）毒性效应研究现状 2
1.3 研究目的与意义 2
2 十溴联苯醚在土壤-黑麦草系统的迁移与分配规律 4
2.1 试验材料 4
2.1.1 供试植物 4
2.1.2 供试土壤 4
2.1.3 试验试剂和器 4
2.1.4 仪器 5
2.2 试验方法 5
2.2.1 土壤预处理和染毒 5
2.2.2 植物培养 5
2.2.3 土壤和黑麦草中十溴联苯醚含量测定 6
2.2.4 十溴联苯醚在黑麦草根系上的空间分配测定 8
2.3 结果与讨论 8
2.3.1 色谱图 8
2.3.2 十溴联苯醚的定性与定量 12
2.3.3 方法空白 13
2.3.4 空白加标和基质加标 14
2.3.5 土壤中十溴联苯醚含量的变化 14
2.3.6 黑麦草对土壤十溴联苯醚的生物富集量 15
2.3.7 十溴联苯醚在黑麦草根系的空间分配 16
3 十溴联苯醚对黑麦草的毒性效应 18
3.1 试验材料 18
3.1.1 供试植物 18
3.1.2 供试土壤 18
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