Comparison of digestion methods for the determination of selenium in fish tissue by cathodic stripping voltammetry

Lambert, David F; Turoczy, N.

doi:10.1016/s0003-2670(99)00795-3

Cited by 25 publications

(5 citation statements)

References 18 publications

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“…Samples of diets, excreta, and eggs were digested according to AOAC official method 986.15 (AOAC, 2000), as outlined in Lambert and Turoczy (2000). This method was chosen because facilities for using perchloric acid digestion were not available.…”

Section: Birds and Experimental Proceduresmentioning

confidence: 99%

Selenium enrichment of table eggs

Bennett

Cheng

2010

Poultry Science

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Selenium is an essential trace element with a recommended dietary allowance for human adults of 55 μg/d. However, there is evidence that greater dietary intakes may have possible health benefits, including a reduction in the risk of cancer. Several studies have shown the feasibility of enriching eggs using organic Se and that Se-enriched eggs are an effective way to supplement human diets. However, few studies have examined the response of egg Se concentration to high (>1 μg/g) dietary organic Se intake by the laying hens. The objective of the current study is to examine the effect of higher dietary organic Se levels on production, egg mass, and egg Se levels. These were assessed by feeding 3 breeds of laying hens (Barred Plymouth Rock, Lohmann Brown, Lohmann White) a basal diet containing 0.3 μg of Se/g of diet as Na2SeO3. Into this diet, Se yeast (SelenoSource AF 600), an organic source of Se, was added at 1.0, 2.4, or 5.1 μg of Se/g of diet for 4 wk. Feed consumption, egg production, and egg mass were not affected by the dietary Se concentration in all 3 breeds. Within the range of Se levels employed in the laying hens' diet, egg Se content increased linearly as dietary levels of Se increased. The results of this study indicate that feeding up to 5.1 µg/g of Se will not affect egg production and the welfare of the laying hen and is a practical way of producing Se-enriched eggs for the consumers.

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Section: Birds and Experimental Proceduresmentioning

confidence: 99%

Selenium enrichment of table eggs

Bennett

Cheng

2010

Poultry Science

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“…20 Nevertheless, wet digestion processes for organic sample preparation are time-consuming (hours) and require constant and close operator attention. Voltammetric determinations were affected by the reminiscent residual organic matter after the UV irradiation method and pressure-aided HNO 3 and HNO 3 /H 2 O 2 digestions.…”

Section: Traditional and Microwave-assisted Digestion Methodsmentioning

confidence: 99%

Sample Preparation Techniques for the Electrochemical Determination of Metals in Environmental and Food Samples

Muñoz

Almeida

Angnes

2013

Reference Module in Chemistry, Molecular Sciences and Chemical Engineering

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“…Combustion bombs have been applied for many organic matrices, including biological and environmental samples and fossil-fuel-related materials [114,117]. In this system, samples are burned inside a stainless steel bomb with an excess of oxygen.…”

Section: Sample Decompositionmentioning

confidence: 99%

Analytical methods for the determination of halogens in bioanalytical sciences: a review

et al. 2013

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Fluorine, chlorine, bromine, and iodine have been studied in biological samples and other related matrices owing to the need to understand the biochemical effects in living organisms. In this review, the works published in last 20 years are covered, and the main topics related to sample preparation methods and analytical techniques commonly used for fluorine, chlorine, bromine, and iodine determination in biological samples, food, drugs, and plants used as food or with medical applications are discussed. The commonest sample preparation methods, as extraction and decomposition using combustion and pyrohydrolysis, are reviewed, as well as spectrometric and electroanalytical techniques, spectrophotometry, total reflection X-ray fluorescence, neutron activation analysis, and separation systems using chromatography and electrophoresis. On this aspect, the main analytical challenges and drawbacks are highlighted. A discussion related to the availability of certified reference materials for evaluation of accuracy is also included, as well as a discussion of the official methods used as references for the determination of halogens in the samples covered in this review.

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Comparison of digestion methods for the determination of selenium in fish tissue by cathodic stripping voltammetry

Cited by 25 publications

References 18 publications

Selenium enrichment of table eggs

Selenium enrichment of table eggs

Sample Preparation Techniques for the Electrochemical Determination of Metals in Environmental and Food Samples

Analytical methods for the determination of halogens in bioanalytical sciences: a review

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