酸盐在典型的红米土壤中的组成,分布,健康风险和驱动因素
Yuna Li1, Shulan Cheng1, Huajun Fang2,3,4,5
1College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China.
Environmental science and pollution research international
|August 3, 2023
概括
甲酸 (PAE) 污染了红米土壤,造成健康风险. 微生物群落和土壤特性影响PAE水平和转变,强调需要对这些关键农业环境进行进一步研究.
科学领域:
- 环境化学环境化学
- 土壤科学 土壤科学
- 生态毒理学 生态毒理学
背景情况:
- 甲酸 (PAE) 积聚在米土壤中,对人类健康造成重大关注.
- 与其他农业环境相比,在土中对PAE污染的研究是有限的.
研究的目的:
- 调查红色田土壤中PAE污染特征,来源和健康风险.
- 确定影响这些土壤中PAE积累和转化的主要驱动因素.
- 探索PAE,土壤特性和微生物群落之间的关系.
主要方法:
- 从典型的红米田收集了125个土壤样本.
- 分析了土壤的物理化学特性,酶活性和细菌社区组成.
- 量化了八种PAE原生物,并评估了它们与土壤参数的相关性.
主要成果:
- 检测到八种PAE原体,其中Di-n-butyl甲酸盐 (DBP),di-(2-ethylhexyl) 甲酸盐 (DEHP) 和di-isobutyl甲酸盐 (DIBP) 是最丰富的 (81%的总量).
- DEHP表明了对人类的潜在致癌风险.
- PAE与土壤有机物 (SOM) 和土壤含水量 (SWC) 有积极的相关性;低水平的PAE增强了细菌的丰富性.
- PAE与酶活性呈正相关性,而土壤酸度和营养动态是细菌群体组成的主要驱动因素.
结论:
- 由于潜在的健康风险,红色土中的PAE污染需要引起注意.
- 像SOM和SWC这样的土壤特性,以及微生物活动,在PAE命运中起着至关重要的作用.
- 微生物群落是红土中PAE转化和生态风险的关键驱动因素.
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