نتایج جستجو برای: pb and cd

تعداد نتایج: 16839860  

2016
S. H. Huang Q. Li Y. Yang C. Y. Yuan K. Ouyang B. Wang S. Wan

An exploratory study on soil contamination of Cd, Zn, Pb was carried out in the surroundings of a historical, abandoned Pb-Zn mining area in Hunan Province, China. The accumulation in soils and representative plants of Cd, Zn, Pb and their chemical speciation were investigated. The obtained results indicated that Cd, Zn and Pb presented a significant contamination compared with Environmental Qu...

2015
Jie He Wanqin Yang Han Li Liya Xu Xiangyin Ni Bo Tan Yeyi Zhao Fuzhong Wu Dusan Gomory

AIMS The release of heavy metals (such as Pb and Cd) from foliar litter play an important role in element cycling in alpine forest ecosystems. Although natural forest gaps could play important roles in the release of heavy metals from foliar litter by affecting the snow cover during the winter and solar irradiation during the growing season, few studies have examined these potential roles. The ...

Journal: :Environmental science & technology 2014
Mert Guney Gerald J Zagury

Children can be exposed to toxic elements in toys and jewelry following ingestion. As, Cd, Cu, Ni, Pb, and Sb bioavailability was assessed (n = 24) via the in vitro gastrointestinal protocol (IVG), the physiologically based extraction test (PBET), and the European Toy Safety Standard protocol (EN 71-3), and health risks were characterized. Cd, Cu, Ni, and Pb were mobilized from 19 metallic toys...

Journal: :Arhiv za higijenu rada i toksikologiju 2015
Iwona Markiewicz-Górka Lidia Januszewska Aleksandra Michalak Adam Prokopowicz Ewa Januszewska Natalia Pawlas Krystyna Pawlas

The aim of this study was to assess the effects of chronic combined exposure to low, environmental doses of Cd, Pb, and Mn on oxidative stress in the liver and heart of rats and on their liver function parameters. Male Wistar rats were divided randomly into eight groups. For nine months controls were receiving drinking water alone, whereas the exposed groups were receiving drinking water with P...

2010
Audra L. Gollenberg Mary L. Hediger Peter A. Lee John H. Himes Germaine M. Buck Louis

BACKGROUND Lead (Pb) and cadmium (Cd) are known reproductive toxicants thought to disrupt hormone production throughout sensitive developmental windows, although this has not been previously examined in nationally representative peripubertal children. OBJECTIVES We examined the association between blood Pb and urinary Cd concentrations and the reproductive hormones inhibin B and luteinizing h...

روان خواه, ندا, معصوم, سعید, میرزایی, روح اله,

Background and purpose: Soil heavy metal contamination is a major environmental concern. Contaminants in urban soils can directly pose significant human health risks through oral ingestion, particle inhalation, and dermal contact. The purpose of this study was to determine the health risk of heavy metals in surface soils in Aran-Bidgol, Iran. Materials and methods: A descriptive cross-sectio...

Journal: :Chemical Engineering Research Bulletin 2021

Heavy metal contamination in soil is considered a global crisis and its bulk proportion are developing countries like Bangladesh. Five heavy metals such as Cd, Cr, Pb, Cu Ni were investigated the of Savar tannery industrial estate. The decreasing trend was observed Cr>Cu>Ni>Pb>Cd. According to US EPA guideline, Cr heavily polluted at selected locations. highly polluted, whereas Cd P...

Journal: :international journal of environmental research 0
m.m. serbaji université de sfax, ecole nationale d’ingénieurs de sfax - larsen, ur « etude et gestion des environnements côtiers et urbains », route soukra, km 3,5, bp 1173, 3038 sfax, tunisie c. azri université de sfax, faculté des sciences de sfax, département des sciences de la terre, ur « etude et gestion des environnements côtiers et urbains », route soukra, km 3,5, pb 1171, 3000, sfax, tunisie k. medhioub université de sfax, institut préparatoire aux etudes d’ingénieurs de sfax, ur « etude et gestion des environnements côtiers et urbains », route menzel chaker, km 1,5, bp 805, 3018 sfax, tunisie

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...

Heavy metal contamination of soil, water and air has caused serious environmental hazard in the biosphere due to rapid industrialization and urbanization. A variety of metal binding ligands such as organic acids and amino acids involve in the heavy metal remediation mechanisms by plants. This paper analyses the possible role of amino acid histidine and organic acids, namely, citric, oxalic and ...

Journal: :Nutricion hospitalaria 2014
Júlia S Manzoli de Sá Isabela C Fernandes Daniele C F Moreira Raquel F Milani Marcelo A Morgano Késia Diego Quintaes

INTRODUCTION The levels of cadmium (Cd) and lead (Pb) in foods should be monitored as a function of health risks. OBJECTIVE To evaluate Cd and Pb levels in oral hospital diets and in an oral food complement (OFC) according to their respective consumption by patients, and to estimate the patient's exposition risk. METHODS The levels of Cd and Pb were determined by ICP-OES in samples of regul...

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