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Pb2+ adsorption onto a soil by irrigation of sewage in the Pearl River Delta of South China was examined as a function of the reaction time, solution pH, initial lead concentration, organic matter (humic acid) and competitive ions (Cu2+). The adsorption of Pb2+ onto the soil was investigated on batch equilibrium adsorption experiments. Results show that the Pb2+ adsorption on the soil is relatively...
Progresses in the study of speciation and biological uptake of arsenic in soil are introduced. The researches on bioavailability of arsenic are summarized, and the main factors which affect arsenic bioavailability are emphatically discussed. Relationship between speciation and availability of arsenic is concluded and the concerned problems and future development orientation are pointed out.
Effectively monitoring vegetation water is essential to improve our understanding of agriculture and hydrology. Vegetation water content is often estimated using vegetation indices derived from optical satellite sensors. In this study, we introduced the new microwave vegetation indices (MVIs) and derived the new MVIs using observation from the Advanced Microwave Scanning Radiometer (AMSR-E). To demonstrate...
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