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Prediction of extractable metals (Cd, Pb, Fe Cu, Mn and Zn) in sewage
Sewage sludge heavy metals sequential extraction bioavailability
2010/9/14
The study shows that the metal ion binding to the biotic surface such as sewage is pH dependent and that there is an optimum pH for bioavailability of metals. The influence of the sludge pH and organi...
Role of Gibberellic Acid in Abolishing the Detrimental Effects of Cd and Pb on Broad Bean and Lupin Plants
Broad been lupin gibberellic acid lead cadmium
2010/11/15
This work describes the changes in photosynthetic pigments, soluble carbohydrates, proteins and activities of certain enzymes of both broad bean and lupin plants in response to heavy metals (Cd or Pb)...
Pb/Zn尾矿上3种苔藓植物对重金属富集能力的比较
重金属 苔藓 富集系数
2009/7/17
［目的］ 研究Pb/Zn尾矿上楔瓣地钱（Marchantia emarginata Reinw.）、双色真藓 (Bryum dichotomum Hedw.)、衮州卷柏［Selaginella involvens (Sw.)Spring］3种苔藓植物对重金属的富集能力。［方法］ 以三门Pb/Zn尾矿砂堆积地为研究地点，调查苔藓植物体内以及相应尾矿基质中的5种重金属（Cu、Pb...
有机酸对Pb·Cd污染水稻植株的解毒作用
有机酸 Pb、Cd 水稻植株 解毒作用
2009/7/13
［目的］研究有机酸对Pb、Cd污染水稻植株的解毒作用，为处理农田Pb、Cd污染提供理论基础。［方法］统计受Pb、Cd、柠檬酸、酒石酸处理的水稻种子萌发率，及水稻植株根、茎叶干重，测定植株内蛋白质以及Pb、Cd含量的变化。［结果］当Cd浓度≤2 mg/L，Pb浓度≤10 mg/L时，有机酸对水稻种子的发芽率影响不大。柠檬酸可以减轻Pb对水稻的毒害，并能促使Pb从根部向地上部转移；而酒石酸可以减轻Cd...
Cu·Pb 及其交互作用对鱼腥草累积的影响
鱼腥草 Cu Pb 交互作用
2009/5/11
叶。表明鱼腥草体内对Pb 和Cu 具有不同的转运机制。土壤中少量的Pb 对鱼腥草累积Cu 具有促进作用, 当Pb 添加量达到2 000 mg/ kg 时又抑制鱼腥草累积Cu,Cu 对鱼腥草累积Pb 具有促进作用。
Electron microscope study of NaCl- and Pb(CH3COO)2-treated kaolinite
kaolinite NaCl Pb(CH3COO) scanning electron microscopy
2008/11/26
The interaction of NaCl and Pb(CH3COO)2 with kaolinite was studied using scanning electron microscopy (SEM). Multiple ordered stacks or ‘quasi-crystals’ (up to 1 mm in diameter and up to 2 mm in heigh...
Effect of Pb-stress on selected physicochemical surface properties of barley (Hordeum vulgare L.) roots
apparent surface area CEC lead roots surface charge dissociation constants
2008/11/20
The objective of this research was to study the roots spring barley of the Ukrainian Peyas variety. The plants grew in a nutrient solution at pH 7, with a 16/8 h (day/night) diurnal light cycle and at...
Potential of Azolla caroliniana for the removal of Pb and Cd from wastewaters
Azolla bioaccumulation heavy metals lead cadmium
2008/11/13
Heavy metals constitute a serious health risk because they accumulate in soils, water and organisms. One of the methods of removing these pollutants from water and soil is the use of plants (phytoreme...
规模化猪场废水灌溉农田土壤Pb, Cd和As空间变异及影响因子分析
农田土壤 猪场废水灌溉
2008/9/19
为了了解长期灌溉猪场废水对农田土壤Pb、Cd和As（简称重金属）的影响，采集了河北省京安猪场周边农田的清洁区和灌溉8年猪场废水的污灌区耕层（0～20 cm）共52个土壤样品，并测定了样品中重金属的全量和有效态含量，应用GIS结合地统计学方法对重金属进行了空间结构和分布特征分析，探讨规模化猪场周边农田土壤重金属积累的影响因子及其贡献。结果表明，重金属全量和有效态含量的变异函数均很好地符合球状模型，其...