نتایج جستجو برای: cadmium and lead in general
تعداد نتایج: 21792269 فیلتر نتایج به سال:
Introduction: Heavy metals owing to their health hazards and high toxicity in low concentration for human and environment have very concern and attention. Slow sand filter is one of the simple and cost-effective for removal of these pollutants. In this method, media play an important role for removal of pollutant. Therefore, the aim of this study was investigation of different media like slag, ...
Background & Aims of the Study: Heavy metals, such as cadmium, lead, and chromium, are common environmental pollutants; however, they are used in various cosmetics. Regarding this, the aim of the present study was to measure the concentrations of lead, cadmium, and chromium in the hair colors available in the markets of Qom, Iran. Materials and Methods: This cross-sectional...
During last century, waste water of gold mine has accumulated heavy metals such as lead, zinc and cadmium in Zarshuran region soil, and thus has increased epidemic disease in this region drastically. The purpose of this research was to reduce the mobility and bioavailability of zinc, lead and cadmium in rhizosphere of sunflower grown in soil around the mine by inorganic sorbents. A pot experime...
Effect of Municipal Wastewater on the Accumulation of Heavy Metals Cadmium and Lead in Soil and Corn
Background and Objective: Using wastewater as a renewable water source to irrigate plants is a safe and effective solution. In contrast, the accumulation of heavy elements in soil and plants is one of the concerns of the use of wastewater in agriculture. This study was conducted to investigate the effects of urban wastewater use on the most important physiological parameters related to the grow...
Background and purpose : Ône of the hazards of industrilization of the communities is use of different chemicals, which are dagnous and health threatening. Heavy methals are one of sach chemicals. Materials and Methods : Çonsidering the accumulative property of cadmium and lead in spinach and radish growing in sari suburbs, this research was undertaken. Dry ash method was applied for the p...
current study was done to determine the concentration of heavy metals including lead and cadmium and nutrients element copper and zinc in a simple and whole wheat macaroni in the valid different supermarkets in the city of tehran. 254 samples from seven iranian simple macaroni , four foreign simple macaroni and two iranian whole wheat macaroni were purchased consecutively in 3 seasons of 2015. ...
Introduction: Bioaccumulation Capacity of Heavy metals in aquatic bodies can do a serious threat to food security and public health. Therefore, in this study, the amount of lead, cadmium and copper in edible tissues of hydrothermal fish in Alborz province was determined in 2017. Materials and Methods: Twenty-one carp fish of three species were randomly selected from the Mahmoudi fishery, which ...
Toxic heavy metals, such as lead (Pb) and cadmium (Cd) are widely used in industry and their accumulation in the living tissues may cause serious health problems and ecological hazards. Twenty four moderately halophilic bacteria isolated from saline environments of Iran were used to study their ability to bioremediation of lead and cadmium. Amongst them, a Gram-negative rod shaped bacterium, de...
Background and purpose: Heavy metals cause major environmental pollution. They accumulate in soil, plants and crops through irrigation with polluted effluents or wastewaters. The aim of this cross-sectional study was to evaluate the concentration of lead and cadmium in soil and irrigation water and their accumulation in pith, flesh, and the skin of kiwifruit. Materials and methods: A sample of...
Background and Objectives: Milk is an important component of the human diet. Exposure to heavy metals through dairy consumption of contaminated foods endangers human health. The aim of this study was to assess concentrations of lead and cadmium in raw milk samples from east of Iran and their safety risks. Materials and Methods: In this study, 54 raw milk samples from five regions were selected...
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