Lead(Pb)is a heavy metal that poses a major hazard to animals and humans when consumed.The content of this metal is significantly high in paddy soil due to the residual effect of phosphate fertilizer.Therefore,this st...Lead(Pb)is a heavy metal that poses a major hazard to animals and humans when consumed.The content of this metal is significantly high in paddy soil due to the residual effect of phosphate fertilizer.Therefore,this study aims to determine the Pb content in the tidal swamp that has been used for agriculture for 40 years.It was carried out from October 2021 to January 2022 on tidal soils representing land typology of A,B,C,and D distributed in the Transmigration area of Mulia Sari,Tanjung Lago District,Banyuasin Regency of South Sumatra,Indonesia.A detailed survey was used and soil samples were taken from up to 12 soil sampling points.The variables observed were soil Pb,pH,CEC(Cation Exchange Capacity),pyrite,and C-organic.The results showed that the Pb content in tidal soils obtained was varied,namely 22.52 mg/kg,14.84 mg/kg,16.84 mg/kg,and 16.68 mg/kg for A,B,C,and D type of land typologies,respectively.Based on these values,the Pb accumulation has exceeded the threshold,which is 12.75 mg/kg.展开更多
以老挝230 k V输电线路铁塔基础施工实践为例,通过对处在沼泽中心区域的几处铁塔基础的施工,总结出了一种技术上可行、经济上合理、安全可靠、质量可控、速度较快的铁塔基础施工方法和措施。经过2年多的运行考验,各种观测数据均验证了...以老挝230 k V输电线路铁塔基础施工实践为例,通过对处在沼泽中心区域的几处铁塔基础的施工,总结出了一种技术上可行、经济上合理、安全可靠、质量可控、速度较快的铁塔基础施工方法和措施。经过2年多的运行考验,各种观测数据均验证了施工方法的可靠性,对类似工程具有一定的借鉴意义。展开更多
文摘Lead(Pb)is a heavy metal that poses a major hazard to animals and humans when consumed.The content of this metal is significantly high in paddy soil due to the residual effect of phosphate fertilizer.Therefore,this study aims to determine the Pb content in the tidal swamp that has been used for agriculture for 40 years.It was carried out from October 2021 to January 2022 on tidal soils representing land typology of A,B,C,and D distributed in the Transmigration area of Mulia Sari,Tanjung Lago District,Banyuasin Regency of South Sumatra,Indonesia.A detailed survey was used and soil samples were taken from up to 12 soil sampling points.The variables observed were soil Pb,pH,CEC(Cation Exchange Capacity),pyrite,and C-organic.The results showed that the Pb content in tidal soils obtained was varied,namely 22.52 mg/kg,14.84 mg/kg,16.84 mg/kg,and 16.68 mg/kg for A,B,C,and D type of land typologies,respectively.Based on these values,the Pb accumulation has exceeded the threshold,which is 12.75 mg/kg.
