نتایج جستجو برای: zn pb deposit

تعداد نتایج: 84932  

Journal: :Comptes Rendus Geoscience 2022

This note is a reply to the « Comment on The Cu-Pb-Zn-bearing veins of Bou Skour deposit (Eastern Anti-Atlas, Morocco): structural control and tectonic evolution » by Hmidou El Ouardi et al., published in Comptes Rendus Géoscience Volume 354, 2022, pages 119–123 (https://doi.org/10.5802/crgeos.115). It concerns article Aabi online May 04, 2021, Geoscience 353, 81–99 (https://doi.org/10.5802/crg...

Journal: :Journal of environmental sciences 2009
Ping Zhuang Huiling Zou Wensheng Shu

The accumulation and transfer of Pb, Zn, Cu, and Cd along a soil-plant-insect-chicken food chain at contaminated sites were investigated. The study site nearing the Pb/Zn mine had been contaminated by heavy metals severely. Cadmium and Pb concentrations steadily declined with increasing trophic level (p < 0.01), but concentrations of Zn and Cu slightly increased from plant to insect larva (p > ...

Journal: :Minerals 2023

The Huoshaoyun zinc–lead deposit, a giant non-sulfide deposit in Xinjiang, is one of the most significant discoveries China and globally recent years. dominated by non-sulfides, with minor occurrences sulfides such as sphalerite, galena, pyrite. minerals include smithsonite, cerussite, anglesite, Fe-oxide. This study focuses on mineralogical characteristics sulfide ores, well trace element Mine...

Journal: :Waste management 2008
Sabiene Nomeda Paulauskas Valdas Shen-Yi Chen Jih-Gaw Lin

In the study, the variations of heavy metal distributions (of Cu, Mn, Pb, and Zn) during the sewage sludge composting process were investigated by sequential extraction procedures. The total content of Cu and Zn in the composted mixture increased after the composting process. Mn and Zn were mainly found in mobile fractions (exchangeable fraction (F1), carbonate fraction (F2), and Fe/Mn oxide fr...

2006
SHAO-WEI LIAO

The ability of water hyacinth ( Eichhornia crassipes Mart. Solms.) to absorb and translocate cadmium (Cd), lead (Pb), copper (Cu), zinc (Zn), and nickel (Ni) was studied in the Erh-Chung wetlands. Translocation ability was defined as the quantity of Cu, Pb, Cd, Ni, and Zn translocated in the plant’s tissues, and was expressed as a root/shoot ratio. The ratio results were in the order of Cu>Pb>C...

2013
Yan-Biao Guo Hong Feng Chong Chen Chong-Jian Jia Fan Xiong Ying Lu

This study investigated heavy metals in soils and agricultural products near an industrial district in Dongguan City. The concentrations of Cu, Zn, Pb, Cd, Hg, and As in soil and agricultural products from vegetable and banana fields were determined. Results indicated that except for Zn in one sample and Cd in five samples, the majority of the samples were notably enriched by heavy metals compa...

2007
Esam H. Ali Mohamed Hashem

The removal efficiency of the heavy metals Zn, Pb and Cd by the zoosporic fungal species Saprolegnia delica and the terrestrial fungus Trichoderma viride, isolated from polluted water drainages in the Delta of Nile in Egypt, as affected by various ranges of pH values and different temperature degrees,was extensively investigated. The maximum removal efficiency of S. delica for Zn(II) and Cd(II)...

Journal: :Journal of environmental biology 2010
Ramesh Singh D P Singh Narendra Kumar S K Bhargava S C Barman

The present investigation deals with the accumulation of heavy metals in fields contaminated with fly ash from a thermal power plant and subsequent uptake in different parts of naturally grown plants. Results revealed that in the contaminated site, the mean level of all the metals (Cd, Zn, Cr, Pb, Cu, Ni, Mn and Fe) in soil and different parts (root and shoots) of plant species were found to be...

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