نتایج جستجو برای: pb and zn

تعداد نتایج: 16841450  

2015
Bozhi Ren Qian Wang Yangbo Chen Wenjie Ding Xie Zheng

In order to reveal the influence of the metals of soil-water interface in a manganese mine (Xiangtan, China), on local water environment, there are six kinds of metals (Mn, Ni, Cu, Zn, Cd, and Pb) characterized by measuring their concentration, correlation, source, and special distribution using principal component analysis, single factor, and Nemero comprehensive pollution index. The results s...

Journal: :Environmental research 2015
Long-Lian Zhang Ling Lu Ya-Juan Pan Chun-Guang Ding Da-Yong Xu Chuan-Feng Huang Xing-Fu Pan Wei Zheng

Baseline blood concentrations of metals are important references for monitoring metal exposure in environmental and occupational settings. The purpose of this study was to determine the blood levels of manganese (Mn), copper (Cu), zinc (Zn), lead (Pb), and cadmium (Cd) among the residents (aged 12-60 years old) living in the suburb southwest of Beijing in China and to compare the outcomes with ...

2010
Halim Ergül

The body weight and condition index (CI) effect on concentrations of Pb, Zn, Mn and Fe were investigated in Mytilus galloprovincialis soft tissue at two different locations in the Izmit Bay. A negative correlation between soft tissue dry weight and metal concentrations was clear in Mn and Fe. On the other hand, Zn and Pb levels decreased with increasing CI value.

Journal: :international journal of environmental research 2012
m.m. serbaji c. azri k. medhioub

eight selected heavy metals (cu, zn, pb, cd, cr, mn, fe and al) in surface and sub-surfacesediments in the northern coast of sfax (tunisia) were studied in order to assess the sediment quality and tohighlight the anthropogenic contributions to heavy metal distributions in the two study sediment levels.multiple chemometric approaches based on geographic information system (gis), enrichment facto...

Journal: :iranian journal of toxicology 0
علی کاظمی ali kazemi department of environmental sciences, tarbiat modares university, noor, mazandaran, iran. علیرضا ریاحی بختیاری alireza riyahi bakhtiari department of environmental sciences, tarbiat modares university, noor, mazandaran, iran. اسما محمدکرمی asma mohammad karami department of marine biology sciences, tarbiat modares university, noor, mazandaran, iran. بهنام حیدری behnam haidari department of environmental pollution, science and research branch, islamic azad university, khouzestan, iran. نبی اله خیرآبادی nabiallah kheirabadi department of marine biology sciences, tarbiat modares university, noor, mazandaran, iran.

background: marine pollution is a global environmental problem that its monitoring by ideal biomonitors is of great importance. marine organisms, especially mussels, have the ability to accumulate metals from the environment they can be considered as a biomonitoring agent. methods: in this study, concentrations of heavy metals were measured in saccostrea cucullata collected from seven sites on ...

Journal: :journal of tethys 0

heavy metal concentrations in surface water, wastewater and sediments collected from mighan lake in markazi province, iran were analyzed, and assessment contamination were evaluated according to the water and sediment quality guidelines. the results showed that the average concentrations of heavy metals in water were ranked as: ni> cr> pb> fe> cu> zn. in comparison with results the background v...

2011
Małgorzata Poniedziałek Agnieszka Sękara Elżbieta Jędrszczyk Jarosław Ciura

The experiment was carried out in 1999-2001 at the University of Agriculture in Krakow (Poland) to study the capacity of nine crops (red beet, field pumpkin, chicory, bean, barley, white cabbage, maize, alfalfa, and parsnip) to remove cadmium (Cd), lead (Pb) and zinc (Zn) from different soil horizons (0-20, 20-40, 40-60 cm). The content of exchangeable Cd, Pb, and Zn decreased along with the de...

Journal: :journal of sciences islamic republic of iran 0

a hydrmetallurgical study based on the extraction of zn and pb from a nigerian sphalerite mineral leached with 4 m hydrochloric acid has been undertaken. triphenylphosphite (tpp) has proved to be very effective for the extraction of zinc. with 2 m tpp and at ambient temperature of 25±2°c; 35.71% and 66.7% of pb and zn were extracted, respectively, into the organic phase within 60 min. the recov...

2014
Afshin Maleki Hassan Amini Shahrokh Nazmara Shiva Zandi Amir Hossein Mahvi

BACKGROUND Heavy metals are ubiquitous elsewhere in nature and their measurement in environment is necessary to develop health management strategies. In this study, we aimed to find out concentrations and spatial patterns of heavy metals in main farms of Sanandaj in Kurdistan, Iran. METHODS Over May to October 2012, six farms were selected to analyze concentrations and spatial patterns of sev...

2005
John Ogony Odiyo Luke Chimuka

A detailed study has been conducted to determine the contamination of Thohoyandou roadside soils, vegetation, sewage and river waters by Zn, Cu, Cr, Pb, Cd, Fe, Pt and Pd. The study further investigated the correlation between these trace metals in roadside soils and vegetation in order to infer the potential impacts of roadside trace metals contamination of vegetation. Collected surface soil a...

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