نتایج جستجو برای: mercury release
تعداد نتایج: 255157 فیلتر نتایج به سال:
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...
Reduction and methylation of inorganic mercury in Porcellio scaber (Isopoda, Crustacea) and its environment were studied, using a purpose-built experimental setup where Hg cycling was followed using 203Hg2+ tracer in experiments without and with isopods. In experiment without isopods, daily reduction of 203Hg2+ to 203Hg0 under sterile and nonsterile conditions was measured for three weeks to as...
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...
Potential mechanisms of some selected heavy metals in the induction of inflammation and autoimmunity
Inflammation is a physiological event that protects tissues from infection and injury. Chronic inflammation causes immune cell over activation sustained release of inflammatory cytokines chemokines cause pathologic conditions including autoimmune diseases. Heavy metals exposure affects innate adaptive systems through triggering responses. It seems extended responses could accelerate heavy metal...
BACKGROUND The objective of this work was developing a simple and stable time-based on-line setup for assessing the potential of mercury (Hg) vapor adsorption of the commercial sorbents used in air sampling and control operation followed by cold vapor atomic absorption spectrometry (CVAAS). METHODS A special designed separation chamber was used where reduction of the injected Hg (II) solution...
بررسی مقایسه ای کارایی نانو لوله های کربنی چند جداره و تک جداره در جذب و نمونه برداری از بخارات جیوه
Background and aims: Sampling of toxic mercury vapors (Hg0) is necessary for determination of occupational exposure levels of workers exposed to this contaminant. Given the tendency of carbon nanotubes for mercury adsorption, carbon nanotubes can be expected to be suitable sampling media for mercury. The aim of this study was to compare the performance of multi-walled and single-walled carbon n...
Background: Dental clinics are known to be one of the largest users of Toxic inorganic mercury. It is well documented that dentists and dental assistants who work with amalgam are chronically exposed to mercury vapor. This study investigates exposure to mercury vapor in a dental clinic. Methods: GBC cold vapor atomic absorption spectrometry (AAS), using sodium borohydride as the reducing age...
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