نتایج جستجو برای: heavy metals concentration

تعداد نتایج: 536742  

Journal: :international journal of environmental research 2014
m. aktaruzzaman m.a.z. chowdhury z. fardous m.k. alam m.s. hossain

pollution of water and soils by heavy metals is an emerging problem in industrialized countries.the present study was conducted to investigate the heavy metals concentration in water and sedimentsamples from ship breaking sites of sitakunda to assess the potential ecological risk posed by heavy metalusing different methods. heavy metals concentration was analyzed by atomic absorption spectrosco...

Background: Contamination of the environment due to heavy metals is a major concern to human life and the environment. This study was conducted to investigate and quantify the copper and zinc concentrations in industrial estates soil in Arak, Iran. Methods: Four industrial estates were considered for the experimental design, including Arak 1, Arak 2, Arak 3, and Ghotbe Sanaati. For prelimin...

آزادبخت, نرجس, سعیدی, مجید, عسگری راد, حسین,

Background and purpose: Exposure to heavy metals can cause neurological, respiratory and cardiovascular disorders, imbalance of hormones, hair loss, infertility, and abortion. Kohl containing heavy metals can lead to such complications due to long-term contact with the lining of the eye. The aim of this study was to investigate the contamination level of Kohl by heavy metals (cadmium, zinc, nic...

This study aims at investigating the effect of distance from source, species type and soil physical chemical properties on the absorption ability of heavy metals by tree species around the Nahavand cement factory. In the present research, soil and tree leaf (Pseudoacacia L, Populus nigra L, Elaeagnus angustifolia L, Fraxinus excelsior and Thuja orientalis L) samples were taken from 300, 500, 80...

Extended abstract 1- Introduction Desert dust is formed under the influence of special weather and environmental conditions in desert areas and enters the atmosphere. Local hurricanes caused by surface air instability, passing through dry deserts, remove silt and sand particles from the surface and enter the atmosphere. Desert dust physically, in addition to its ecological effects such as lun...

Journal: :advances in environmental technology 0
kourosh razmgar department of chemical engineering, ferdowsi university zahra beagom mokhtari hosseini department of chemical engineering, hakim sabzevari university

the pollution of water environments is a challenging issue especially in developing countries. contamination of drinking water with heavy metals has been reported in many parts of the world. arsenic, chromium and lead are dangerous heavy metals and also common contaminants of drinking water. in this study, the capacity and performance of the surfactant-modified sabzevar natural nanozeolite (sms...

Journal: :journal of food quality and hazards control 0
z. derakhshan department of environmental health engineering, faculty of public health, shahid sadoughi university of medical sciences, yazd, iran m. faramarzian department of environmental health engineering, faculty of health, shiraz university of medical sciences, shiraz, iran a.h. mahvi school of public health, tehran university of medical sciences, tehran, iran m.s. hosseini [email protected] m. miri department of environmental health engineering, faculty of public health, shahid sadoughi university of medical sciences, yazd, iran

background: given the importance of vegetables in the food pyramid, their safety is very important from view point of public health. vegetable contamination by heavy metals can lead to bioaccumulation of these toxic and disease-causing elements in the body of consumers. therefore, in this study, the concentration of some heavy metals, including lead (pb), cadmium (cd), zinc (zn) and copper (cu)...

Journal: :محیط زیست طبیعی 0
رضوان زارع زاده دانشگاه هرمزگان پیمان رضائی دانشگاه هرمزگان

gabrik in the east of hormozgan province is mangrove habitat and one of the important mangrove protected area. this area is located in oman coasts. this zone because of building jagin dam on gabrick river and existence of sand barrier and exposure of pollution, it is possible to destroy or to be important threats of this planet. base on importance of this sea inhabitation some of sedimentology ...

Journal: :پژوهش های محیط زیست 0
روح اله میرزایی دانشجوی دکتری، دانشکده منابع طبیعی، دانشگاه تربیت مدرس عباس اسماعیلی ساری استاد دانشکده منابع طبیعی، دانشگاه تربیت مدرس هادی قربانی استادیار دانشکده کشاورزی، دانشگاه صنعتی شاهرود ناصر حافظی مقدس دانشیار دانشکده علوم زمین، دانشگاه صنعتی شاهرود محمودرضا همامی استادیار دانشکده منابع طبیعی، دانشگاه صنعتی اصفهان حمیدرضا رضایی استادیار دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان

heavy metal contamination has been and continues to be a worldwide phenomenon that heavy metals in the soil have an effect on environment and food quality, and may threaten human health. no information is currently available on the distribution pattern of heavy metals concentration in soils of golestan province. the objective of this research was to determine the spatial distribution of cd, as,...

Background and Objectives: Heavy metals enter water supply sources in different ways such as natural or artificial and when they enter the food chain and accumulate in tissues, they cause harmful effects on human health. Therefore, the aim of this study was to determine the concentration of heavy metals in drinking water sources in Karaj and compare it with national standards. Materials and Me...

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