نتایج جستجو برای: trace elements and heavy metals

تعداد نتایج: 16889651  

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2016
A M Souza A M Salviano J F B Melo W P Felix C S Belém P N Ramos

In this study we determined the concentration of metals (Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn) in the water lower São Francisco River basin, to evaluate the influence of urbanization and industrialization on environmental changes in the water resource. All samples were analyzed using the IUPAC adapted method and processed in an atomic absorption spectrophotometer. The sampling stations located nea...

2012
Haruki ADACHI Takaaki ITAI Shin TAKAHASHI Tsunemi KUBODERA Shinsuke HARUTA Shinsuke TANABE

Twenty seven trace elements (Li, Mg, Al, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Rb, Sr, Mo, Ag, Cd, In, Sn, Sb, Cs, Ba, Tl, Hg, Pb, Bi) and stable isotope ratios (δ13C and δ15N) were measured in deep sea organisms from OffSanninn and Off-Hokuriku, Japan to evaluate the trophic transfer of these elements. Concentrations of Al, Fe, In, Sb and Ba were positively correlated with δ15N values suggest...

2014
E. M. Abd El Lateef

Field trials were conducted in winter season in two sites located about 20km north east of Cairo; Gabal Asfar farm (fertile soil) and Berka site (virgin soil).The trials aimed to evaluate the impact of rapeseed irrigation methods with secondary treated wastewater on yield ,quality trace elements and heavy metal content. The results clearly showed that rapeseed crop was not suited to the virgin ...

Journal: :Environment international 2003
V Hatje T E Payne D M Hill G McOrist G F Birch R Szymczak

The uptake and release of 109Cd, 51Cr, 60Co, 59Fe, 54Mn, and 65Zn were studied using end-member waters and particles from Port Jackson estuary, Australia. The kinetics of adsorption and desorption were studied as a function of suspended particulate matter (SPM) loading and salinity. Batch experiments showed that the position and slope of the pH edges are dependent on the metal and on the salini...

2018
Adijat Funke Ogundola Callistus Bvenura Anthony Jide Afolayan

Solanum nigrum cultivated on different soil texture types, sandy clay loam, silty clay loam, clay loam, loam, and control soils, were evaluated for proximate compositions, antinutrients, vitamins, and mineral composition with plant age using standard analytical methods. Accumulation of trace elements using translocation factor was studied to determine their toxic levels in plant tissues. Data w...

2014
Beata Modrzewska Mirosław Wyszkowski

The aim of the study was to determine concentrations of some trace elements (lead, cadmium, chromium, and nickel) in soils along State Road 51 leading from Olsztyn to Olsztynek, northeastern Poland. The traffic flow had a significant effect on the content of heavy metals in soils lying along the road. Further away from the road, and under a lower traffic flow intensity, the amounts of contamina...

2015
Zhouping Liu Qiaofen Zhang Tiqian Han Yanfei Ding Junwei Sun Feijuan Wang Cheng Zhu Paul Tchounwou

Heavy metals are regarded as toxic trace elements in the environment. Heavy metal pollution in soil or rice grains is of increasing concern. In this study, 101 pairs of soil and rice samples were collected from the major rice-producing areas along the Yangtze River in China. The soil properties and heavy metal (i.e., Cd, Hg, Pb and Cr) concentrations in the soil and rice grains were analyzed to...

2014
Jacqueline McComb Turquoise C. Alexander Fengxiang X. Han Paul B. Tchounwou

Nature has slow occurring biogeochemical cycles of trace elements and heavy metals and the cycles have significantly controlled environmental fates of these elements. The trace elements and heavy metals cannot be degraded like organic pollutants and they may transform and become stable and persistent contaminants that accumulate in soil and sediments [1–3]. Estuaries play an important role in h...

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