Search Results - "Heitkemper, D T"

Survey of total arsenic and arsenic speciation in US-produced rice as a reference point for evaluating change and future trends by Heitkemper, D.T, Kubachka, K.M, Halpin, P.R, Allen, M.N, Shockey, N.V

“…Rice generally contains higher levels of arsenic than most terrestrial-based foods. Studies related to dietary intake of arsenic from rice must take into…”
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An evaluation of extraction techniques for arsenic species from freeze-dried apple samples by Caruso, J A, Heitkemper, D T, B'Hymer, C

“…The extraction of arsenic from freeze-dried apples and subsequent determination of individual arsenic species by HPLC-ICP-MS is described. Solvent extraction…”
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Arsenic extraction and speciation in carrots using accelerated solvent extraction, liquid chromatography and plasma mass spectrometry by Vela, N P, Heitkemper, D T, Stewart, K R

“…Arsenic present in freeze-dried carrots was extracted using accelerated solvent extraction (ASE). Several parameters, including selection of the dispersing…”
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Arsenic speciation by ion chromatography with inductively coupled plasma mass spectrometric detection by Sheppard, B S, Caruso, J A, Heitkemper, D T, Wolnik, K A

“…Four As compounds were successfully separated and detected by single-column ion chromatography with inductively coupled plasma (ICP) mass spectrometric…”
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Comparison of a Chemical and Enzymatic Extraction of Arsenic from Rice and an Assessment of the Arsenic Absorption from Contaminated Water by Cooked Rice by Ackerman, Amanda H, Creed, Patricia A, Parks, Amy N, Fricke, Michael W, Schwegel, Carol A, Creed, John T, Heitkemper, Douglas T, Vela, Nohora P

“…Rice is a target food for arsenic speciation based analyses because of its relatively high arsenic concentration and per capita consumption rates. Improved…”
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Elimination of the chloride interference on the determination of arsenic using hydride generation inductively coupled plasma mass spectrometry by Story, W C, Caruso, J A, Heitkemper, D T, Perkins, L

“…In the determination of arsenic, attention has recently focused on the speciation of As(III) and As(V). Reversed-phase HPLC can be used to efficiently separate…”
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Total arsenic determination and speciation in infant food products by ion chromatography-inductively coupled plasma-mass spectrometry by Vela, N.P, Heitkemper, D.T

“…Health risk associated with dietary arsenic intake may be different for infants and adults. Seafood is the main contributor to arsenic intake for adults while…”
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Practical applications of element-specific detection by inductively coupled plasma atomic emission spectroscopy and inductively coupled plasma mass spectrometry to ion chromatography of foods by Heitkemper, D T, Kaine, L A, Jackson, D S, Wolnik, K A

“…Three practical examples are presented to demonstrate the utility of element-selective detection for ion chromatography (IC). The determination of As species…”
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Ion Chromatographic Analysis of Corrosive Materials in Product Tampering Investigations by Kaine, LA, Jackson, DS, Heitkemper, DT

“…Investigations of product tampering cases involving corrosives focus on the cause of extreme pH, and then attempt to determine the source of the contaminant…”
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