نتایج جستجو برای: mercury hygiene
تعداد نتایج: 65017 فیلتر نتایج به سال:
background: mercury (hg) is a hazardous metal responsible for environmental contamination and human intoxication. methyl mercury bio-accumulation through food chain can be responsible for chronic mercury exposure of south caspian sea communities with a diet rich in fish. uncertainties about exposure levels that could have damaging consequences for nervous system development of infants makes bio...
abstract studies have shown that birds due to being in the high trophic levels on the ecosystems, and also high sensitivity to toxic substances are a useful indicator for the evaluation of mercury pollution. the objective of the present study was to evaluate mercury level in the feathers of turdus philomelos and turdus merula in khanikan forests as an indicator of mercury contamination. to atta...
on the basis of the some studies recently published on the concentration of potentially dangerous levels of mercury, a global pollutant and highly toxic element in sea fish and specially tuna fish, this work has been carried out to determine the concentration of mercury in canned tuna fish, that compose a large majority of the fish most people eat. for this reason, 30 cans, produced by differen...
evaluation of mercury concentration in hair of dentists and survey of factors influencing its levels
the purpose of this study was to evaluate the exposure to mercury (hg), and to examine the various parameters, which contribute to high levels of mercury of iranian dentists in tehran. one-hundred hair samples were collected from dentists. in addition, fifty samples from a control group were taken for comparison. the survey included a structured questionnaire designed to provide information abo...
Concentrations of total mercury and methyl mercury were determined in sediment and fish collected from estuarine waters of Florida to understand their distribution and partitioning. Total mercury concentrations in sediments ranged from 1 to 219 ng/g dry wt. Methyl mercury accounted for, on average, 0.77% of total mercury in sediment. Methyl mercury concentrations were not correlated with total ...
Background and Aim: Amalgam is used in dentistry cautiously, due to the toxicity of mercury in dental amalgam. Dentists are exposed to mercury vapor in their routine occupational practice, which can be harmful to their health. The aim of the present study was to measure urinary mercury concentrations in general dentists and restorative specialists in Mashhad in 2010. Materials and Methods: This...
Background and purpose: Mercury contamination is still a threat to the environmental and public health in both developed and developing countries. The aim of this study was to determine the total and organic mercury content in the muscle of goldfish (Carassius aurathus gibelio) obtained from the east and west of Anzali Wetland. We also assessed the health risks involved in consumption of this f...
Mercury is a toxic and non-essential metal in the human body. Mercury is ubiquitously distributed in the environment, present in natural products, and exists extensively in items encountered in daily life. There are three forms of mercury, i.e., elemental (or metallic) mercury, inorganic mercury compounds, and organic mercury compounds. This review examines the toxicity of elemental mercury and...
Content of mercury in hepatopancreas, muscle and exoskeleton of blue crab T. prymna from Musa estuary and their relationship with size of the organism and season were determined. Mean concentration of mercury in hepatopancreas, muscle and exoskeleton were 1.23, 0.61 and 0.41 µg/g dw, respectively. There was significant difference (p<0.05) in mercury levels depending on the sex with greater ...
From a public health perspective, there is growing concern about dietary mercury intake as the most important source of mercury exposure. This study was performed to estimate dietary mercury exposure and to analyze the association between mercury intake and blood mercury levels in Koreans. The study subjects were 553 adults, comprising a 10% representative subsample of the Korean National Envir...
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