نتایج جستجو برای: trace lead

تعداد نتایج: 402700  

2011
Tom Sizmur Barbara Palumbo-Roe Mark E. Hodson

16 The common practice of remediating metal contaminated mine soils with compost can reduce 17 metal mobility and promote re-vegetation, but the effect of introduced or colonising 18 earthworms on metal solubility is largely unknown. We amended soils from an As/Cu (1150 19 mgAs kg and 362 mgCu kg) and Pb/Zn mine (4550 mgPb kg and 908 mgZn kg) with 0, 20 5, 10, 15 and 20 % compost and then intro...

2017
M Z H Khan M R Hasan M Khan S Aktar K Fatema

The concentrations of major (Si, Al, Ca, Fe, and K) and minor (Cd, Mn, Ni, Pb, U, Zn, Co, Cr, As, Cu, Rb, Sr, and Zr,) elements in the surficial sediments were studied in an attempt to establish their concentration in the Bengal coast. It was revealed that the majority of the trace elements have been introduced into the Bengal marine from the riverine inflows that are also affected by the impac...

Journal: :Marine pollution bulletin 2014
B Lourino-Cabana G Billon L Lesven K Sabbe D-C Gillan Y Gao M Leermakers W Baeyens

Seasonal variation in trace metal contamination in surface sediments was studied through high resolution profiles assessed monthly by DGT probes in muddy sediments of the North Sea. General parameters such as pH, temperature, dissolved oxygen and sulfides were also recorded to estimate their role in the speciation of trace metals. Experimental data were included in a thermodynamic equilibrium m...

Journal: :international journal of occupational and environment medicine 0
ei ugwuja deptartment of chemical pathology, faculty of clinical medicine, ebonyi state university, abakaliki, ebonyi state b ejikeme department of obstetrics and gynaecology, faculty of clinical medicine, ebonyi state university, abakaliki ja obuna department of obstetrics and gynaecology, faculty of clinical medicine, ebonyi state university, abakaliki

background: lead toxicity has been reported to affect hematopoietic, nervous, reproductive, cardiovascular and urinary tract systems. many investigators have so far studied the effects of high blood lead levels on pregnancy outcomes. objective: to investigate the effects of elevated maternal blood lead during pregnancy on some trace elements and pregnancy outcomes. methods: blood lead and plasm...

This research aims to monitor the trace elements content (Cr, Cu, Pb, Cd, Ag, Al, Mn, Mg, Zn and Fe) in the tissues of the muscle and liver of silver carp (H. molitrix ) and stone moroko (P. parva) from Zarivar Wetland in western Iran. This research was cross-sectional. The research specimen was fish caught from Zarivar Wetland. Metal concentration analysis was carried out utilizing an ICP. Fin...

Journal: :Occupational and Environmental Medicine 2011

2010
Manal F. Elshamaa Samar Sabry Inas Mokhtar Gamila S. El-Saaid Mona Raafat Dalia A. Abd-El Haleem

INTRODUCTION The determination of toxic elements in the biological samples of human beings is an important clinical procedure. This study was performed to investigate the prevalence of abnormal blood contents of 2 trace elements (TEs), aluminum (Al),and lead (Pb) in hemodialysis (HD) patients and to analyze their relationship with the medications, such as CaCO(3), Ca acetate, 1,25-dihydroxy vit...

Journal: :Folia biologica 2014
Dorota Cygan-Szczegielniak Magdalena Stanek Emilia Giernatowska Bogdan Janicki

The aim of the research was to determine the effect of the season and the breeding region on the content of selected minerals (Zn, Cu, Mn, Fe, Pb, Cd) in the hair of dairy cows. The research material covered 114 Holstein-Friesian breed cows from three breeding centres in Poland, hereafterreferred to as A, B and C. Breeding centre A is located in Opolskie province, breeding centre B in Podlaskie...

Journal: :Environmental toxicology and chemistry 2008
Barry C Kelly Michael G Ikonomou David A Higgs Janice Oakes Cory Dubetz

The present study reports measured levels of Hg and other trace elements in commercial salmon feed; farmed Atlantic, coho, and chinook salmon (n = 110); and wild coho, chinook, chum, sockeye, and pink salmon (n = 91). Metal concentrations in farmed and wild salmon from British Columbia, Canada, were relatively low and below human health consumption guidelines. Methylmercury in all salmon sample...

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