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Atomic Mercury Product Applications In USA
19 applications found
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Direct atomic absorption mercury determination (without any pre-treatment procedures) in food is complicated by its organics matrix. That is the reason why almost all AAS methods of mercury determination in foodstuff include sample digestion by ...
ByLumex Instruments based in Mission, BRITISH COLUMBIA (CANADA)
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Introduction: Direct (without any pre-treatment) atomic absorption or atomic fluorescence mercury determination in food and feed is difficult due to complex organic matrix. ...
ByLumex Instruments based in Mission, BRITISH COLUMBIA (CANADA)
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Introduction Determination of mercury in oil and petroleum hydrocarbon is currently a vital probl em due to the fact that the regulations for the mercury content in emission s from thermal power plants are becoming ever more stringent, and mercury poisons catalysts used in oil re ...
ByLumex Instruments based in Mission, BRITISH COLUMBIA (CANADA)
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INTRODUCTION Mercury and its compounds are highly toxic substances fo r humans. It occurs naturally and exists in various forms: elemental (or metallic); inorganic (e.g. mercuric chloride); and organic (e.g., methyl- and ethylmercury). These forms all have different toxicities and implications for health. Among naturally occurring mercury compounds, methylme rcury exerts a significant influence (neurotoxic action) on human ...
ByLumex Instruments based in Mission, BRITISH COLUMBIA (CANADA)
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INTRODUCTION Blood is one of the most complex substances for determination of the Hg content. At the same time, blood is the most important diagnostic medium used for monitoring the effect of Hg vapor on the human organism. In almost all the countries, personnel of mercury-involving production facilities are regularly examined for the Hg content in blood, which should not exceed 20–50 µg/l, whereas in the case of a person unexposed to mercury vapor the blood normally contains 1–3 µg/l of ...
ByLumex Instruments based in Mission, BRITISH COLUMBIA (CANADA)
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INTRODUCTION The main way of mercury removal from human body is it s urinary excretion, which is an important diagnostic medium for screening examination of population, risk group determination, and diagnostics and treatment of mercury ...
ByLumex Instruments based in Mission, BRITISH COLUMBIA (CANADA)
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Introduction The mercury concentration in crude oil and petroleum products can vary in a wide range of less than 0.1 ppb to dozens ppm. Direct mercury determination in crude oil and petroleum products at the range above 5 ppb is covered by ASTM D7622-10(2015) "Standard test method for total mercury in crude oil using combustion and direct cold vapor atomic absorption method with Zeeman background correction". ...
ByLumex Instruments based in Mission, BRITISH COLUMBIA (CANADA)
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INTRODUCTION Quantitative determination of the total mercury content in filtrates of wash-off samples from the surfaces of walls, floors, equipment, and other facilities of m anufacturing areas is an effective method for the occupational safety ...
ByLumex Instruments based in Mission, BRITISH COLUMBIA (CANADA)
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INTRODUCTION High mercury concentration can be found in such cosmetic products as skin lightening soaps and creams, makeup cleansing products, and mascara. Mercury in cosmetics exists as inorganic and organic compounds. Inorganic mercury (e.g. ammoniated mercury) is used in skin lightening soaps and creams. Organic mercury compounds, such as thiomersal, are used as cosmetic preservatives in makeup cleansing products and ...
ByLumex Instruments based in Mission, BRITISH COLUMBIA (CANADA)
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Introduction Mercury determination in natural, drinking, and waste waters is one of the most popular analyses used for environment pollution and sanitary control. Background concentrations of mercury in natural water are within several ng/l. Maximum national permissible levels for mercury in water lie in the range of 0.16–6 µg/l. For example, the following limits for mercury in drinking water are set, µg/l: 0.5 – Japan, Russia; 1 – Argentina, Australia, Brazil, China, EC; 2 ...
ByLumex Instruments based in Mission, BRITISH COLUMBIA (CANADA)
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INTRODUCTION Mercury is widely used in chemical industry, electronic s, electric engineering, instrument making, medicine, pesticide and explosives production, etc. A number of techniques and equipment are developed for reclaiming mercury-containing waste, such as soil, sludge, stillage botto ms, slime sediments, fluorescent lamps, mercury-containing ...
ByLumex Instruments based in Mission, BRITISH COLUMBIA (CANADA)
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Introduction : Analysis of soils, bottom and overburden sediments, rocks and ores for mercury content is one of the most common measurements in environmental pollution monitoring and geochemical exploration. Lumex Instruments proposes a rapid and precise method for direct mercury determination using RA-915 series analyzers based on atomic absorption spectroscopy with Zeeman correction of the background absorption (ZAAS). The thermoscanning option enables the ...
ByLumex Instruments based in Mission, BRITISH COLUMBIA (CANADA)
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Introduction Mercury is one of the most toxic trace contaminant naturally occurring in the coals. During the coal combustion process at the coal-fired power plants mercury is released into the environment. To manage effectively the stack gas cleaning process, it is necessary to know the mercury content in the coal, and also in stack gas, liquid and solid ...
ByLumex Instruments based in Mission, BRITISH COLUMBIA (CANADA)
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Introduction The natural gas is a significant source of ingres s of mercury in the environment. The typical mercury concentration in natural gas may vary from 0.01 to 200 μ g/m3 . Mercury, being present in hydrocarbon gas, initiates corrosion of pipelines and catalyst poiso ning during gas transportation and processing, and these effects have serious implications for the gas-processing ...
ByLumex Instruments based in Mission, BRITISH COLUMBIA (CANADA)
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Introduction A conventional standard method of total mercury det ermination in water using atomic absorption spectrometry (AAS) involves preliminary sample digestion that ta kes from 30 minutes to 8 hours depending on the digestion conditions. The use of a mercury analyzer RA-915M/RA-915+ with Zeeman background correction in combination with PYRO-915+ pyrolysis attachment provides direct dete rmination of mercury in process and waste waters ...
ByLumex Instruments based in Mission, BRITISH COLUMBIA (CANADA)
Besides Mass Spectrometry, a further variety of analysis techniques are categorized as atomic spectroscopy. Analysis techniques which use inductively coupled plasma (ICP), such as ICP-OES and ICP-MS, are among these. With increasing environmental awareness backed by regulations, an increasingly important use of atomic spectroscopy techniques is in mercury analysis. Achieving a high mass flow control performance, e.g. high repeatability or an excellent turn-down ...
ByAxetris AG based in Kaegiswil, SWITZERLAND
Using Atomic Fluorescence Spectrometry for the determination of Mercury (Hg), Arsenic (As), Selenium (Se) & Antimony (Sb) in Environmental samples. ...
ByP S Analytical Limited based in Orpington, UNITED KINGDOM
Using Atomic Fluorescence Spectrometry for the determination of Mercury, Arsenic, Selenium & Antimony from Food, Feed and Beverage samples. ...
ByP S Analytical Limited based in Orpington, UNITED KINGDOM
Total Mercury: Mercury in liquids and solids, Hg in gases, online stack gas/cem, online liquid, online natural ...
ByP S Analytical Limited based in Orpington, UNITED KINGDOM