نتایج جستجو برای: hair mercury

تعداد نتایج: 76586  

Journal: :iranian journal of toxicology 0
سید محمود قاسم پوری seyed mahmoud ghasempouri department of environment, faculty of natural resources and marine sciences, tarbiat modares university, nour, iran نرجس اوکاتی narjes okati department of environment, faculty of natural resources, zabol university,zabol , iran عباس اسماعیلی ساری abbas esmaili-sari department of environment, faculty of natural resources and marine sciences, tarbiat modares university, nour, iran

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...

سقراط فقیه زاده, , سید محمود قاسمپوری, , عباس اسماعیلی ساری, , قاسم ذوالفقاری, ,

Background: Dental amalgam, a mixture of approximately 50% mercury with silver, tin, zinc and copper in varying ratios, is a major source of mercury pollution in the general population not occupationally exposed. The toxicity of mercury is enhanced because it is so readily absorbed, with around 90-100% of mercury vapor being absorbed through the oral mucosa. The aim of the current study is to e...

Journal: :علوم و تکنولوژی محیط زیست 0
قاسم ذوالفقاری عباس اسماعیلی ساری سید محمود قاسمپوری سقراط فقیه زاده

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...

Abbas Esmaili-Sari, Narjes Okati, Seyed Mahmoud Ghasempouri,

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 b...

Journal: :Environmental health and preventive medicine 2005
Miwako Dakeishi Kunihiko Nakai Mineshi Sakamoto Toyoto Iwata Keita Suzuki Xiao-Jie Liu Tomoko Ohno Tomoko Kurosawa Hiroshi Satoh Katsuyuki Murata

OBJECTIVES Exposure misclassification is a major obstacle to obtain accurate dose-response relationships. In order to solve this problem, the impact of hair treatment on total mercury in hair was assessed in Japanese women. METHODS A cross-sectional study was carried out among 327 women at age 24-49 years to determine hair mercury levels and estimate daily mercury intakes from seafood by usin...

ژورنال: سلامت و محیط زیست 2010
اسماعیلی ساری, عباس, اکاتی, نرجس, قاسمپوری, سید محمود,

Backgrounds and Objectives: Mercury is a heavy metal that is widespread in the environment and has many toxic effects. At present, MeHg exposure on women remain an important issues for researching, especially those of continuous uptake in high-fish consumption.MeHg can be transferred to infant through breast milk. The objective of this study was to characterize the risk of Hg exposure in mother...

ژورنال: سلامت و محیط زیست 2017

Background and Objective: Information about the history of exposed individuals to mercury and monitoring mercury levels in body can be obtained by analyzing the longitudinal section of hair. The aim of this study was to analyze changes of mercury concentrations in hair length and daily mercury intake in women living in Bandar Abbas, Bushehr and Mahshahr cities. Materials and Methods: In this c...

Journal: :Journal of applied toxicology : JAT 1992
S A Katz R B Katz

Relationships have been established between the concentrations of mercury in human scalp hair and environmental or dietary mercury exposures. For chronic exposures, the hair/blood ratio for mercury is in the range 200:1-300:1, and scalp hair mercury concentrations of greater than 5 ppm are indicative of mercury intoxication. These observations, coupled with the ease by which samples may be coll...

2006
Kern L. Nuttall

Evaluation of mercury exposure in an individual patient ideally includes the presenting history, physical examination, consideration of the differential diagnosis, and mercury analysis of blood and urine specimens. Analysis of mercury in hair specimens may supply useful supplemental information about exposure to organic compounds such as methylmercury, particularly to help reconstruct the patte...

Journal: :iranian journal of toxicology 0
عباس اسماعیلی ساری abbas esmaili-sari tarbiat modares university, noor اسماعیل عبداله زاده esmail abdollahzadeh faculty of natural resources and marine sciences, noor شریف جورابیان شوشتری sharif joorabian shooshtari tarbiat modares university, noor سید محمود قاسم پوری seyed mahmoud ghasempouri tarbiat modares university, noor

background: mercury is widespread and persistent in the environment. one organic form of mercury, methylmercury (mehg), can accumulate in the food chain in aquatic ecosystems and lead to high concentrations of mehg in fish, which, when consumed by humans, can result in an increased risk of adverse effects. currently, the joint fao/who expert committee on food additives (jecfa) has established p...

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