安徽大学学报（自然科学版）2024，Vol.48Issue(6)：94-108,15.DOI:10.3969/j.issn.1000-2162.2024.06.013
水田、旱地土壤重金属磁学响应及相关监测研究
Magnetic response of heavy metals in paddy and dryland soils and the related monitoring research
摘要
Abstract
To study the difference and cause of magnetic response of heavy metals in paddy field and dryland soil,70 representative soil samples from Guangzhou were collected and tested.The magnetic test results showed that the magnetic minerals in the soil were mainly soft magnetic ferrous minerals and a small amount of hard magnetic minerals.The magnetism of dryland soil was slightly stronger than that of paddy field,which contained antiferromagnetism minerals and some soft magnetic particles were dissolved.Single domain and multi domain particles in the two soils and superparamagnetic particles in dryland soil were formed by soil forming weathering,while superparamagnetic particles in paddy soil were formed by other factors.The sequence of magnetic minerals during weathering and pedogenesis was pedogenic magnetite,maghemite,hematite and goethite.There was a correlation between the content of heavy metals in soil and magnetic parameters,but the sources of most heavy metals and magnetic particles were not consistent.However,most of the regression analysis equations obtained by classifying soil according to the degree of heavy metal enrichment were effective.And magnetic methods could be used to monitor heavy metals in paddy and dryland soils.关键词
土壤磁学/重金属/回归分析/矿物颗粒/风化成土Key words
soil magnetism/heavy metals/regression analysis/mineral particles/weathering and pedogenesis分类
资源环境引用本文复制引用
王钊,郭宇,欧阳婷萍,郑小战,朱照宇,张俊岭..水田、旱地土壤重金属磁学响应及相关监测研究[J].安徽大学学报（自然科学版）,2024,48(6):94-108,15.基金项目
中国地质调查局项目及其子项(DD20190291,DD20190291-2) （DD20190291,DD20190291-2）
广州市国土资源和规划委员会项目([2017]03) （[2017]03）
中国地质调查局项目(DD20190291) （DD20190291）
广州市"岭南英杰"后备人才资助项目([2019]928) （[2019]928）
