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Nutrition and Toxicity
LGC has developed very reliable and accurate measurements of the essential element
selenium, in small samples of serum. There is a very narrow window between the
boundaries of deficient and toxic levels of selenium in man. The use of a special
sample introduction system, with a programme specifically optimised for selenium,
enabled reliable data to be generated on very small samples (typically 50 mL) of
serum. These measurements will underpin the interpretation of current national
surveys to elucidate the anti-cancer benefits of this essential element. Similar
advances have been made in methods for the measurement of vital vitamins, such as
folates and niacin. In both cases LGC has exploited modern separation systems which
can now be linked to mass spectrometry (LC-MS). The new methodology provides much
greater selectivity and sensitivity for measuring these key components in food. This
in turn provides a sound basis for nutritional data and for labelling food on the
supermarket shelves. LGC has taken this new technology further in measuring low level
contaminants in meat products. These developments are enabling thousands of screening
and confirmation tests to be carried out in only 20% of the time taken using the
traditional methods. This is providing faster, more cost effective and reliable
analyses, in an important area of the food industry.
Recent Publications
| 1. |
The simultaneous determination of the ionophore antibiotics in animal tissues & eggs by LC-MS-MS. Submitted to: Food Chemistry, August (2000)
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| 2. |
A rapid method for the determination of lasalocid residues in animal tissue and eggs by HPLC with fluorescence detection and confirmation by LC-MS-MS. Analyst, 125, 2189, (2000)
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| 3. |
Accurate analysis of selenium in water and serum using ETV-ICP-MS with isotope dilution. J of Anal. Atom. Spec., 15, 743, (2000)
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| 4. |
The use of ETV-ICP-MS for the determination of selenium in serum. J of Anal Atom Spec., 14 121 (1999)
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| 5. |
The analysis of some folate monoglutamates by high performance liquid chromatography - mass spectrometry. J. Chromatogr. A, 864 59 (1999)
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Conference Proceedings
| 1. |
Determination of niacin in foods by LC-MS-MS with isotope dilution. PITTCON Conference 2001, New Orleans, March (2001)
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| 2. |
Estimation of uncertainties: Selenium determination by ICP-MS. 10th Biennial National Atomic Spectroscopy Symposium (BNASS), Sheffield, July (2000)
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| 3. |
A robust technique for high throughput analysis of veterinary residues. 4th Euroresidue conference, Veldhoven, The Netherlands, May (2000)
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| 4. |
A flexible tool for the screening & confirmation of veterinary residues. 4th Euroresidue conference, Veldhoven, The Netherlands, May (2000)
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| 5. |
The analysis of some folate monoglutamates by high performance liquid chromatography - mass spectrometry. R&D Topics colloquium, University of Greenwich, (1999)
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| 6. |
Selenium and human health: Accurate analysis using ICP-ID-MS. International winter plasma conference, Pau, France, January (1999)
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| 7. |
The use of ETV-ICP-MS for the determination of selenium in serum. Ninth Biennial Atomic Spectroscopy Symposium (BNASS), University of Bath, July (1998).
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