environmental stresses are one of the most important factors of agricultural products reduction in the world. the influence of different concentrations of nickel nitrate (0, 100, 200 and 500 μm in hoagland’s solution) on dry matter, catalase enzyme, flavonoids, hydrogen peroxide, peroxidase enzyme, mda and accumulation of ni were studied in coriander ( coriandrum sativum ) plants. treatment wit...

an increase in heavy metal pollution in the soils of arak due to industrialization and urbanization has become an environmental problem. the region hosts several industrial facilities which are the main source for hazardous wastes which include electric, metal, automotive supply industry, food, machinery, and chemicals. soil samples were collected from these industrial areas in the central and ...

background: welding is one of the most exercised industrial processes which welders are exposed to chemical and physical hazardous agents. this study was conducted to evaluate occupational and environmental exposures to aerosols generated by welding processes in a factory. methods: a total of 28 samples of aerosols were collected at 4 different locations including indoor, outdoor, source of wel...

background: heavy metals (hms) are one of the most important polluting substances emitted to the environment during cement production. tehran cement factory located in the southeastern of tehran, iran, closer to agricultural lands cultivates alfalfa, barley, and maize as feed. the objective of the study was to determine the concentration of hms in agricultural soils. methods: thirty six soil sa...

metal pollution has become one of the most serious environmental problems resulting from human activity. phytoremediation utilizes plants to uptake contaminants and can potentially be used to remediate metal-contaminated sites. the present study investigates heavy metal uptake (cd, cr, and ni) from soil by different organs of populus alba and morus alba. for this purpose, cd (40, 80, and 160 m...

estuaries are well known for their potential in removing metal from fresh water to provide micro-nutrients to aquatic life. in the present investigation, we have tried to bring out the metal removal potential of estuaries during accidental spills. for this purpose artificial river water containing high concentration of mn, cu, zn, ni and pb were mixed with sea water at different salinity regime...

background: the present study investigated the impact of land use on health risks (cancerous and non-cancerous) of heavy metals in soil along the hemmat highway of tehran, iran. materials and methods: a total of 28 soil samples were collected in august 2014 from the roadside soil of the hemmat highway. the collected samples were air-dried and digested, and then, analyzed for heavy metals using ...

Occupational or environmental exposures to heavy metals produce several adverse health effects. The common mechanism determining their toxicity and carcinogenicity is the generation of oxidative stress that leads to hepatic damage. In addition, oxidative stress induced by metal exposure leads to the activation of the nuclear factor (erythroid-derived 2)-like 2/Kelch-like ECH-associated protein ...

Diffuse cutaneous hyperpigmentation may have various causes: endocrine, metabolic, autoimmune, melanosis secondary to metastatic melanoma, drug or heavy metal poisoning. A cause to remember is acanthosis nigricans, which, in the form of paraneoplastic syndrome may be the first or even the only clinical manifestation of a cancer. The most common cause of malignant acanthosis nigricans is the gas...