相关实验视频

Updated: Jul 26, 2026

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Physical, Chemical and Biological Characterization of Six Biochars Produced for the Remediation of Contaminated Sites

Published on: November 28, 2014

在中国的土壤小麦生态系统中,聚环芳的分布和转移规则

Guanyu Qin¹, Chao Su², Xuedong Qiao³

¹College of Environmental & Resource Sciences, Shanxi University, Taiyuan, 030006, China.

Environmental monitoring and assessment

|November 9, 2023

概括

中国小麦土壤和谷物中的多环芳 (PAH) 存在潜在的癌症风险. 根据土壤污染水平,小麦以不同的方式积累PAH,根和茎比谷物度更高.

科学领域:

环境化学环境化学
土壤科学土壤科学
食品安全食品安全

背景情况:

多环芳 (PAH) 是持久性有机污染物,具有重大环境和人类健康影响.
了解土壤作物系统中的PAH转移和积累对于评估食品安全和环境污染至关重要.
冬季小麦是主要的粮食作物,使其被PAHs污染成为农业地区的重大问题.

研究的目的:

总结和分析中国土壤和冬季小麦中16种优先PAH的度,分布和转移模式.
调查不同小麦部分的PAHs的生物积累因子和根度因子 (RCF).
用增量终身癌症风险 (ILCR) 模型评估与口服小麦摄入相关的人类健康风险.

主要方法:

在英语和中文数据库的文学选中,对中国土壤和冬季小麦中PAH的研究进行了研究.
在根球土壤和各种小麦部分 (根,茎,谷物) 中分析PAH度 (Σ16PAH).
计算生物积累因子,生物度因子和RCF;应用ILCR模型进行健康风险评估.

主要成果:

在小麦根球土壤中的PAH度在西,河南和山东各省有很大差异.
在小麦中PAH的积累因污染水平而异:根>茎/谷物在中度污染的地点,茎在干净的地点最高.
低环和中环PAH被小麦根更容易吸收,并确定了成人和儿童的潜在致癌风险.

结论:

在小麦中PAH的积累受土壤污染水平和PAH环结构的影响.
小麦可以积累PAHs,在不同省份和污染水平中观察到不同的模式.
通过饮食摄入受污染的小麦存在潜在的致癌风险,需要进一步制定风险管理策略.

关键词:

全国范围的国家规模.多环芳香碳化合物多环芳香碳化合物土壤小麦生态系统空间分布的空间分布转移规则转移规则

更多相关视频

Investigating Long-Distance Transport of Perfluoroalkyl Acids in Wheat via a Split-Root Exposure Technique

Investigating Long-Distance Transport of Perfluoroalkyl Acids in Wheat via a Split-Root Exposure Technique

Published on: September 28, 2022

Determination of the Absorption, Translocation, and Distribution of Imidacloprid in Wheat

Determination of the Absorption, Translocation, and Distribution of Imidacloprid in Wheat

Published on: April 28, 2023

相关概念视频

Soil Microbial Ecology

Soil Microbial Ecology

Soil microbial ecology is defined by highly diverse, spatially structured communities that drive nutrient cycling, organic matter turnover, and overall ecosystem stability. Although a gram of soil can contain thousands of bacterial and archaeal taxa, the ecological processes they mediate are even more crucial for sustaining terrestrial life.Microhabitats and NichesSoil is a heterogeneous mixture of minerals, organic matter, water, and air. Microbes inhabit distinct microhabitats formed by...

Microbial Bioremediation of Pesticides

Microbial Bioremediation of Pesticides

Pesticides often feature structurally complex chemical architectures, incorporating halogen groups and multiple aromatic rings. These characteristics confer high chemical stability, rendering many pesticides resistant to natural degradation processes. This resistance poses significant environmental concerns, as persistent pesticide residues can accumulate in ecosystems and affect non-target organisms.Despite the inherent stability of many pesticides, certain microorganisms possess the metabolic...