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Determination of selenium, arsenic, iodine and bromine in fish, plant and mammalian oils by cyclic instrumental neutron activation analysis
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In this paper, the concentrations of arsenic, selenium, iodine and bromine in a series of fish, plant and mammalian oils have been determined by cyclic instrumental neutron activation analysis (CINAA).Abstract:
The concentrations of arsenic, selenium, iodine and bromine in a series of fish, plant and mammalian oils have been determined by cyclic instrumental neutron activation analysis (CINAA). Crude fish oils contain between 0.047 and 0.151 μg Se g−1, 2.36–14.5 μg As g−1, 2.36–9.63 μg Br g−1 and 0.97–4.76 μgI g−1. Seal oil contains the same four elements, but at levels below the lower end of the fish oil ranges. Iodine, bromine and arsenic were not detected in rape-seed or soybean oils and the concentration of selenium varied from < 0.010 to 0.042 μg g−1. The levels of selenium, iodine and bromine are reduced markedly by hydrogenation of the menhaden oils. The CINAA method yielded results which were in agreement with pub-lished values obtained by other methods. The technique was rapid, requiring minimal sample manipulation, and was essentially free from interferences.read more
Citations
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Journal ArticleDOI
Important considerations in the development of public health advisories for arsenic and arsenic-containing compounds in drinking water.
TL;DR: Important information is provided and discussed on the physical and chemical properties, production and use, fate and transport, toxicokinetics, systemic and carcinogenic health effects, regulatory and health guidelines, analytical methods, and treatment technologies that are applied to arsenic pollution.
Journal ArticleDOI
Seafood lipids and fatty acids
TL;DR: The bioavailability of different forms of omega‐3 fatty acids attached to glycerol, or sold as ethyl esters or free fatty acids, must be addressed and the absorption and distribution in the body of various forms of fatty acids is outlined.
Journal ArticleDOI
Iodine Content in Fish and Other Food Products from East Africa Analyzed by ICP-MS
Karen M. Eckhoff,Amund Maage +1 more
TL;DR: The results of the collected samples showed that the iodine concentration in fillet of salt water fish was 5 to 10 times higher than those of fresh water fish, with highest value of 920 μg I/kg wet weight for changu as mentioned in this paper.
Journal ArticleDOI
A study of organic bound halogens in human adipose, marine organisms and sediment by neutron activation and gas chromatographic analysis
TL;DR: In this paper, the amount of organic bound bromine and iodine in human adipose was also found in the fat fraction though at very low levels, only 1 -20% of the total organic bound chlorine in the samples.
Journal ArticleDOI
Iodine determination in plant materials
TL;DR: In this article, the influence of iodine fertilisation on the iodine concentration of cress (Lepidium sativum) was determined by a pot experiment in which different amounts of iodine were added.
References
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Journal ArticleDOI
The uptake and reduction of arsenic species by marine algae
TL;DR: Calculations based on the measured rates of reduction indicate that 15–20% of the total arsenic is reduced by phytoplankton during the spring and fall blooms on the continental shelf.
Journal ArticleDOI
Bromoperoxidases and halogenated lipids in marine algae1
TL;DR: P pH optima in the range pH 5 to 8 were determined for a few of the more active algal bromoperoxidases and inhibition could not be distinguished from the possibility of competition by cyanide for electrophilic bromination.
Journal ArticleDOI
Rapid multielement neutron activation analysis with a slowpoke reactor
TL;DR: The SLOWPOKE nuclear reactor as mentioned in this paper meets modern elemental analysis requirements; rapid multielement analysis of most types of samples is possible; the variable neutron flux (maximum 10 12 n cm -2 s -1 ) is stable, homogeneous and reproducible from day to day over a period of months.
Journal ArticleDOI
Analysis of arsenic and selenium in marine raw materials.
TL;DR: The results indicate that selenium is also enriched in the N liquor from fish, but not from the invertebrate animals analysed, and may be present as more arseno-organic compounds.
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