Electrophoresis Applications in Asia & Middle East
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Determination of chlorate, perchlorate, and chlorite ions in drinking water including bottled water
Introduction Chlorination remains the most widespread way of disinfecting water in the world. Its flaws are: high toxicity of chlorine and other chlorinating reagents, also formation of various chlorine-containing compounds, including chlorite-, chlorate, and perchlorate anions. Maximum permitted levels (MPL) of these components are established in WHO Guidelines for drinking water and other regional and national ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of dyes in beverages
The method allows identification and determination of synthetic dyes in samples of soft and alcoholic drinks by capillary electrophoresis. The Capillary Electrophoresis (CE) method for the determination of synthetic dyes is based on their differential migration in a narrow quartz capillary under the influence of the applied electric field. Identification and quantitative determination of dyes is performed by measuring the UV absorbance at 254 nm (for “CAPEL® -103РТ/104Т” systems) ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of bromide and iodide anions in water samples
The method allows determination of bromide and iodide ions in natural, potable (incl. bottled), and mineral water using capillary electrophoresis (CE) ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of 4-carboxybenzaldehyde & p-toluic acid in purified terephthalic acid according to ASTM D7881 & ASTM D7882 test methods
Introduction These test methods cover the determination of 4-carboxybenzaldehyde (4-CBA, 4-formylbenzoic acid) and p-toluic acid (p-TOL, 4-methylbenzoic acid) in purified terephthalic acid (PTA) by capillary electrophoresis (CE) with normal or reverse voltage mode and UV ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of amino acids in fodders and raw materials using high performance capillary electrophoresys method
The method enables fast quantitative determination in feeds, mixed fodders, and raw materials of the following amino acids: arginine, lysine, tyrosine, phenylalanine, histidine, leucine and iso-leucine (total), methionine, valine, proline, alanine, glycine, cystine, tryptophan, aspartic and glutamic acids. Since during the sample decomposition asparagine and glutamine are hydrolyzed to aspartic and glutamic acids, respectively, the content of these two acids represents the total content of both the acids and the ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of cations in beverages
The method enables fast determination of inorganic cations (sodium, potassium, calcium, and magnesium) in the samples of juices, beer, wines, brandies, brandy alcohols, and raw materials by capillary electrophoresis. The method for evaluation of cations concentration is based on differential migration and separation of cations in electric field due to the difference in their electrophoretic mobility. Identification and quantitative determination of the analyzed cations is performed by indirect detection ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of water-soluble forms of inorganic and organic anions in soils, clays, peat, wastewater silt, activated sludge, and bottom sediments
Introduction The content of water-soluble forms of inorganic (chlorides, sulfates, nitrates, fluorides and phosphates) and organic (acetates, formates, and oxalates) anions is one of the substantial characteristics in agrochemical, land reclamation, and sanitary assessments of soils (arable, hayland, pastur able, forest nursery soils). These data are also important in investigation of the behavior of the soil processes, study of nutrient metabolism, and detection of salts harmful to plants. The anion balance ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of inorganic anions, cations, and organic acids in fermentation liquids
Introduction: Capillary electrophoresis analyses of particularly complex samples can be highly problematic due to the presence of many compounds, deteriorating the separation inside the capillary. Fermentation liquid is one of such samples, full of proteins, cell debris, and lipids. At the same time accurate analysis of fermentation liquid for the presence of inorganic anions, or cations, or organic acids can be of utmost importance to ensure the correct way of the whole process. For example, the elevated values ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of acetic acid (acetate anions) in natural, drinking, and waste water
Introduction The method is used for the determination of acetic acid (as acetate ions) in the samples of natural water, drinking water, and waste water by capillary ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of amino acids in beer and wort by capillary electrophoresis
Free forms of amino acids in beer originate mostly from malt. The following method enables fast quantitative determination in beer and wort of the following free amino acids: arginine, lysine, tyrosine, phenylalanine, histidine, leucine and iso-leucine (total), methionine, valine, proline, alanine, glycine, cystine, tryptophan, aspartic and glutamic acids. Total content of amino acids is fdetermined after hydrolysis of proteins. ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of hesperidin and naringin in juices using CAPEL-105M capillary electrophoresis system
The method is intended for determination of hesperidin and naringin using capillary electrophoresis technique in order to reveal adulteration of juices. These components are tested in citrus juices, concentrated juices, nectars, juice-containing beverages, and fruit sauces that are produced primarily from oranges, grapefruits, tangerines, lemons, and limes. ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of proteins concentrations and their molecular weights
INTRODUCTION The method enables fast separation of proteins according to their molecular weights (Mw) with subsequent protein quantification in pr otein-containing ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of inorganic cations in water samples
Introduction The method allows determination of ammonium, lithium, sodium, potassium, magnesium, calcium, strontium and barium cations in samples of natural, potable, and waste water by the capillary electrophoresis ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of inorganic anions in water samples
Introduction The method allows determination of inorganic anions (chloride, nitrite, sulfate, nitrate, fluoride, and phosphate as soluble ortho-phosphate) in samples of natural, potable, and cleaned waste ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of inorganic anions in aqueous matrices according to EPA 6500 and ASTM D6508-10 test methods
This test method is applicable for determination of the dissolved inorganics anions; fluoride, bromide, chloride, nitrite, nitrate, ortho-phosphate, and sulfate in aqueous matrices using capillary ion electrophoresis with indirect UV detection. The method can be applied to drinking water, wastewater and ground water. ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of protein purity and heterogeneity with capillary gel electrophoresis and capillary isoelectric focusing
INTRODUCTION Antibodies, protein-based therapeutics, and other recombinant proteins are final products in biotechnological and pharmaceutical industry. Determination of their purity, stability, and hetero geneity is of utmost importance since post-translational modifications as well as degradation processes can change drastically the biological activity of these ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of Anions in Beverage
Introduction The method is used for the determination of the mass concentration of chloride, sulfate, and nitrate in beverages by capillary electrophoresis. The method can be applied for all types of non-alcoholic and alcoholic beverages including sport and energetic drinks, juices, beer and beer products, wines, brandy and spirits, liquors, and ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of inorganic cations in drinks
The method enables fast determination of inorganic cations (sodium, potassium, calcium, and magnesium) in the samples of juices, beer, wines, brandies, brandy alcohols, and raw materials by capillary electrophoresis. ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of phenoxycarboxylic acid herbicides in water using high performance capillary electrophoresys method using Capel systems
The method allows determination of herbicides classified as phenoxycarboxylic acids, specifically: 2,4-dichloro-- phenoxybutyric acid (2,4-DB), 2,4-dichlorophenoxypropionic acid (2,4-DP, Dichlorprop), 2,4-dichloropheno-- xyacetic acid (2,4-D), and phenoxyacetic acid in samples of natural, potable and treated waste water by capillary electrophoresis. ...
By Lumex Instruments Office in Beijing, CHINA.
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Determination of tryptophane in fodders and raw materials using high performance capillary electrophoresys method
The method enables fast quantitative determination of amino acid tryptophane in feeds, mixed fodders, and raw materials. ...
By Lumex Instruments Office in Beijing, CHINA.
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