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LC/MS confirmation of ionophores in animal feeds

Autor: S B, Turnipseed, J E, Roybal, A P, Pfenning, S A, Gonzales, J A, Hurlbut, M R, Madson

Publikováno v: Journal of AOAC International. 84(3)

A liquid chromatographic/mass spectrometric (LC/MS) electrospray confirmation method has been developed to confirm 4 ionophores (monensin, lasalocid, salinomycin, and narasin) in a variety of animal feeds using a single quadrupole mass spectrometer.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::00975284f7dcaccb78c6ae184ea89827
https://pubmed.ncbi.nlm.nih.gov/11417625

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Solid-phase extraction cleanup and liquid chromatography with ultraviolet detection of ephedrine alkaloids in herbal products

Autor: J A, Hurlbut, J R, Carr, E R, Singleton, K C, Faul, M R, Madson, J M, Storey, T L, Thomas

Publikováno v: Journal of AOAC International. 81(6)

A solid-phase extraction (SPE) cleanup and a liquid chromatographic (LC) method with UV detection is presented for analysis of up to 7 ephedrine alkaloids in herbal products. Alkaloids from herbal products are extracted with acidified buffer, isolate

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::3a12b2782d5bfe4384ba31045bd1d816
https://pubmed.ncbi.nlm.nih.gov/9850573

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Determination of methylmercury in food commodities by gas-liquid chromatography with atomic emission detection

Autor: M R, Madson, R D, Thompson

Publikováno v: Journal of AOAC International. 81(4)

A method was developed for determining methylmercury in various food commodities. The organomercurial species was converted to methylmercuric chloride by treatment of a sample homogenized with 1.8M HCl. The resulting chlorinated species was eluted fr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::7e2245b1d3df9fa688ec423e0be94efe
https://pubmed.ncbi.nlm.nih.gov/9680706

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Simultaneous determination of chloramphenicol, florfenicol, and thiamphenicol residues in milk by gas chromatography with electron capture detection

Autor: A P, Pfenning, M R, Madson, J E, Roybal, S B, Turnipseed, S A, Gonzales, J A, Hurlbut, G D, Salmon

Publikováno v: Journal of AOAC International. 81(4)

A gas chromatographic (GC) method is described for determining residues of chloramphenicol (CAP), florfenicol (FF), and thiamphenicol (TAP) in raw milk, with meta-nitrochloramphenicol (mCAP) as internal standard. Milk is extracted with acetonitrile,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::4d1a1f1d4e66f23993f7d97b1f7e282c
https://pubmed.ncbi.nlm.nih.gov/9680695

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