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mercury absorption Applications

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    Direct atomic absorption mercury determination in tissues and biological samples

    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 health.

    By Lumex Instruments Group based in Mission, BRITISH COLUMBIA (CANADA).

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    Direct atomic absorption mercury determination in oil and oil products

    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 fining.

    By Lumex Instruments Group based in Mission, BRITISH COLUMBIA (CANADA).

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    Direct atomic absorption mercury determination in foodstuff and mixed feed

    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 acids.

    By Lumex Instruments Group based in Mission, BRITISH COLUMBIA (CANADA).

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    Determination of the mercury concentration in naphtha

    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". Mercury determination in naphtha and light petroleum products (condensate, gasoline and diesel fuel) at a level below 5 ppb is a vital problem for the oil refining and petrochemical industry. Complex organic matrix impedes conventional quantitative analysis for mercury.

    By Lumex Instruments Group based in Mission, BRITISH COLUMBIA (CANADA).

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    Rapid analysis of total mercury in waste waters and process waters with elevated mercury content using direct pyrolysis technique

    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.

    By Lumex Instruments Group based in Mission, BRITISH COLUMBIA (CANADA).

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    Determination of arsenic, cadmium, chromium, lead, mercury, and tin content in food products

    Introduction

    This analytical procedure is intended for measuring the content of the elements (cadmium, lead, arsenic, tin, chromium and mercury) in the samples of food products by atomic absorption spectrometry with electro- thermal atomization using an “MGA-915M” Graphite Furnace AA Spectrometer.

    By Lumex Instruments Group based in Mission, BRITISH COLUMBIA (CANADA).

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    Measuring weight content of the elements (As, Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, Sb, V, Zn) in soil, ground, and bottom sediment samples

    Introduction

    This analytical procedure is intended for measuring th e weight content of the el ements (vanadium, cadmium, cobalt, manganese, copper, arsenic, nickel, lead, ant imony, chromium, zinc, and mercury) in soil, ground, and bottom sediment samples by atomic absorption sp ectrometry using an “MGA-915M” Graphite Furnace AA Spectrometer.

    By Lumex Instruments Group based in Mission, BRITISH COLUMBIA (CANADA).

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    Determination of heavy metals in food

    This analytical procedure is intended for measuring the content of the elements (cadmium, lead, arsenic, tin, chromium and mercury) in the samples of food products by atomic absorption spectrometry with electrothermal atomization using an “MGA-915M” Graphite Furnace AA Spectrometer.

    The method is based on measuring resonance radiation absorption that occurs when the radiation passes through a layer of atomic vapor in the electrically heated graphite furnace of the “MGA-915M” AA spectrometer. The concentration of the elements is determined from the integrated analytical signal and is calculated using a preset calibration graph. The samples of food products are digested prior to analysis in accordance with standard methods. 

    By Lumex Instruments Group based in Mission, BRITISH COLUMBIA (CANADA).

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