Results 251 to 260 of about 6,726,698 (289)

Determination of chromium(III) and total chromium using dual channels on glass chip with chemiluminescence detection

Talanta, 2007
A simple, rapid and sensitive method for the determination of chromium(III) and total chromium using the simple dual T channels on glass chip with negative pressure pumping system and chemiluminescence (CL) detection is presented. The CL reaction was based on luminol oxidation by hydrogen peroxide in basic aqueous solution catalyzed by chromium(III ...
Waraporn, Som-Aum, Jirasak, Threeprom, Haifang, Li, Jin-Ming, Lin   +3 more
openaire   +2 more sources

Increased Blood Cobalt and Chromium After Total Hip Replacement

Journal of Toxicology: Clinical Toxicology, 1999
To determine metal concentrations in blood and urine of patients who received cobalt-chromium-alloy metal on metal hip implants.Cobalt and chromium were determined in blood and urine of 76 patients and 26 controls by electrothermal atomic absorption spectroscopy.A significant postoperative elevation of the metal concentrations was observed for total ...
Andreas W. Schaffer, Andreas Schaffer, Alexander Pilger, Christa Engelhardt, Karl Zweymueller, Hugo W. Ruediger   +5 more
openaire   +2 more sources

Excessive chromium intake in children receiving total parenteral nutrition

The Lancet, 1992
Various expert bodies have recommended that the daily parental intake of chromium in children receiving total parenteral nutrition (TPN) should be 0.20 micrograms/kg. To test whether this recommendation is appropriate, we assessed chromium intake, serum chromium concentrations, and renal function in 15 children receiving TPN. The median duration of TPN
A A, Moukarzel, M K, Song, A L, Buchman, J, Vargas, W, Guss, S, McDiarmid, L, Reyen, M E, Ament   +7 more
openaire   +2 more sources

Joint Assessment of Bioreduction of Chromium(VI) and of Removals of Both Total Chromium and Total Organic Carbon (TOC) in Sequential Hybrid Bioreactors

Water, Air, & Soil Pollution, 2016
The overall purpose of this work was to evaluate the treatment system performance of sequential hybrid bioreactors, one without aeration and another with intermittent aeration, in the bioremoval of Cr(VI) and total chromium and in the removal of total organic carbon (TOC). The saturation kinetic curves were studied with initial concentrations of Cr(VI)
C. A. B. Crisostomo, F. A. Lima, R. M. Dias, V. L. Cardoso, M. M. de Resende   +4 more
openaire   +1 more source

Chromium deficiency after long-term total parenteral nutrition

Digestive Diseases and Sciences, 1986
A 63-year-old female developed unexplained hyperglycemia and glycosuria during administration of a total parenteral nutrition regimen on which she had been stable for several months. Because the patient had no history of diabetes or evidence of an infection, chromium deficiency was considered.
R O, Brown, S, Forloines-Lynn, R E, Cross, W D, Heizer   +3 more
openaire   +2 more sources

Permanganate‐Azide Test for Total Chromium in Water

Journal AWWA, 1956
chromium and a diphenylcarbazide reagent, resulting in a characteristic reddish-violet color, following Beer's Law. This reaction does not occur with trivalent or bivalent chromium. To facilitate the determination of the total chromium which may be present in a water, it has been found feasible to oxidize the polyvalent chromium ions to the hexavalent ...
openaire   +1 more source

Determination of total chromium and chromium(VI) in animal feeds by electrothermal atomic absorption spectrometry

Journal of Analytical Atomic Spectrometry, 1994
An electrothermal atomic absorption spectrometric method was developed for the determination of total and hexavalent chromium in animal feeds. For measuring total chromium the samples were digested in a mixture of three acids (HNO3–HCl–HF). Chromium in its hexavalent state was dissolved in 0.01 mol l–1 NaOH solution.
M. Elisa Soares, M. Lourdes Bastos, Margarida A. Ferreira   +2 more
openaire   +1 more source

Determination of total chromium by flow injection analysis

Analytica Chimica Acta, 1985
Abstract The determination of total chromium by flow injection analysis is described. Cerium(IV) and nitric acid are used to convert chromium(III) to chromium(VI); the oxidation rate is enhanced by placing the reaction coil in an 80°C oil bath. 1,5-Diphenylcarbazide is used to form a colored complex with chromium(VI) that is measured at 540 nm.
openaire   +1 more source

Hexavalent Chromium and Total Chromium

American Industrial Hygiene Association Quarterly, 1957
Robert G. Keenan, Vernon B. Perone
openaire   +1 more source

Transference of total chromium and hexavalent chromium from soils to mushrooms

Toxicology Letters, 2007
Estela Figueiredo, Maria Elisa Soares, Marisa Castro, Maria de Lourdes Bastos   +3 more
openaire   +1 more source