Sérþekking:
Snefilefni, Efnagreiningar, Áhættumat, Þörungar
Verkefni:
- Hafa þörungar áhrif á joðmagn mjólkur? Fóðurtilraun sem kannar gæði mjólkur frá kúm sem hafa fengið þörunga sem joðgjafa
- Hafa þörungar í fóðri áhrif á metanlosun frá kúm? Fóðurtilraunir sem skoða einnig heilnæmi mjólkur og kjöts
- Þang sem fóðurbætir fyrir mjólkurkýr – Fóðurtilraun sem kannar áhrif þörunga á nyt og heilnæmi mjólkur
- Rannsókn á getu íslenskra þörunga til að hafa áhrif á metan framleiðslu kúa
- Dreifing arsentegunda eftir þanghlutum, sér í lagi arsenlípíða
Ritrýndar greinar:
Newton, E.E., Pétursdóttir, Á.H., Ríkharðsson, G., Beaumal, C., Desnica, N., Giannakopoulou, K., Juniper, D., Ray, P., Stergiadis, S.. Effect of Dietary Seaweed Supplementation in Cows on Milk Macrominerals, Trace Elements and Heavy Metal Concentrations - (2021). Foods, 10, 1526.
Nanbing Qin, Gergely Faludi, Stephane Beauclercq, Joe Pitt, Natasa Desnica, Ásta Pétursdóttir, Eric E. Newton, Angelos Angelidis, Ian Givens, Darren Juniper, David Humphries, Helga Gunnlaugsdóttir, Sokratis Stergiadis. Macromineral and trace element concentrations and their seasonal variation in milk from organic and conventional dairy herds - (2021). Food Chemistry, Volume 359, .
Pétursdóttir, Á.H., Blagden J., Gunnarsson, K., Raab, A., Stengel, D.B., Feldman, J., Gunnlaugsdóttir, H.. Arsenolipids are not uniformly distributed within two brown macroalgalspecies Saccharina latissima and Alaria esculenta - (2019). Analytical and Bioanalytical Chemistry, 411, 4973-4985.
Pétursdóttir Á.H., Gunnlaugsdóttir H.. Selective and fast screening method for inorganic arsenic in seaweed using hydride generation inductivelycoupled plasma mass spectrometry (HG-ICPMS) - (2019). Microchemical Journal, 144, 45-50.
Marschner, K., Pétursdóttir, Á.H., Bücker, P., Raab, A., Feldmann, J., Mester, Z., Matoušek, T., Musil, S.. Validation and inter-laboratory study of selective hydride generation for fastscreening of inorganic arsenic in seafood - (2019). Analytica Chimica Acta, 1049, 20-28.
Pétursdóttir, Á.H., Rodrigues de, J, J., Gunnlaugsdóttir, H., Feldmann, J.. Quantification of labile and stable non-polar arsenolipids in commercial fish meals and edible seaweed samples - (2018). Journal of Analytical Atomic Spectro-metry, 1, 102-110.
Marschner, K., Pétursdóttir, Á.H., Bücker, P., Raab, A., Feldmann, J., Mester, Z., Matoušek, T., Musil, S.. Validation and inter-laboratory study of selective hydride generation for fast screening of inorganic arsenic in seafood - (2018). Analytica Chimica Acta, 21, 20-28.
Petursdóttir, A.H., Fletcher K., Gunnlaugsdóttir H., Krupp E., Küpper F.C., Feldmann J.. Environmental effects on arsenosugars and arsenolipids in Ectocarpus (Phaeophyta) - (2015). Environmental Chemistry, 13(1), 21-33.
Petursdottir A.H., Sloth J., Feldmann J.. Introduction of regulations for arsenic in feed and food with emphasis on inorganic arsenic, and implications for analytical chemistry - (2015). Analytical and Bioanalytical Chemistry, 407, 8385-8396.
Petursdottir, A.H., Gunnlaugsdottir, H., Krupp, E.M., Feldmann, J.. Inorganic arsenic in seafood: Does the extraction method matter? - (2014). Food Chemistry, 150, 353-359.
Petursdottir A.H., Friedrich, N., Musil, S., Raab, A., Gunnlaugsdottir, H., Krupp, E.M.,Feldmann, J.. Hydride generation ICP-MS as a simple method for determination of inorganic arsenic in rice for routine biomonitoring - (2014). Analytical Methods, 6, 5392-5396.
Musil, S., Petursdottir, A., Raab, A., Gunnlaugsdottir, H., Krupp, E., Feldmann, J.. Speciation without chromatography using selective hydride generation: inorganic arsenic in rice and samples of marine origin - (2014). Analytical Chemistry, 86(2), 993-999.
Ásta Heiðrún Pétursdóttir, Helga Gunnlaugsdóttir, Hrönn Jörundsdóttir, Andrea Raab, Eva M. Krupp, Jörg Feldmann. Determination of inorganic arsenic in seafood: Emphasizing the need for certified reference materials - (2012). Pure and Applied Chemistry, 84(2), 191-202.
Pétursdóttir, Á.H., Gunnlaugsdóttir, H., Jörundsdóttir, H., Adrien Mestrot, Krupp, E.M., Feldmann, J.. HPLC-HG-ICP-MS: a sensitive and selective method for inorganic arsenic in seafood - (2012). Analytical Chemistry, 404(8), 2185-2191.
Kenneth O. Amayo, Asta Petursdottir, Chris Newcombe, Helga Gunnlaugsdottir, Andrea Raab, Eva M. Krupp, Jörg Feldmann. Identification and Quantification of Arsenolipids Using Reversed-Phase HPLC Coupled Simultaneously to High-Resolution ICPMS and High-Resolution Electrospray MS without Species-Specific Standards - (2011). Analytical Chemistry, 83, 3589-3595.
Ritaskrá / Publications
Doktorsritgerð / Thesis
Ásta Heiðrún E. Pétursdóttir, 2014, Inorganic and lipophilic arsenic in food commodities with an emphasis on seafood. PhD Thesis in Analytical Chemistry. University of Aberdeen, Aberdeen, UK.
Ásta Heiðrún E. Pétursdóttir, 2010, Determination of toxic and non toxic arsenic species in Icelandic fish meal. Master’s Thesis in Analytical Chemistry. University of Iceland, Reykjavik, Iceland.
Ritrýndar greinar / Publications in peer-reviewed journals
2021:
Newton, E.E., Pétursdóttir, Á.H., Ríkharðsson, G., Beaumal, C., Desnica, N., Giannakopoulou, K., Juniper, D., Ray, P., Stergiadis, S. Effect of Dietary Seaweed Supplementation in Cows on Milk Macrominerals, Trace Elements and Heavy Metal Concentrations. Foods 2021, 10, 1526.
Pétursdóttir, Á.H., Qin, N., Faludi G., Beauclercq S., Desnica, N., Newton E.E., Angelidis, A., Givens, I. Juniper, D., Humphries, D., Gunnarsdóttir, H. Stergiadis, S. Macromineral and trace element concentrations and their seasonal variation in milk from organic and conventional dairy herds. Food Chemistry, Volume 359.
2019:
Pétursdóttir, Á.H., Blagden J., Gunnarsson, K., Raab, A., Stengel, D.B., Feldman, J., Gunnlaugsdóttir, H. 2019. Arsenolipids are not uniformly distributed within two brown macroalgalspecies Saccharina latissima and Alaria esculenta. Analytical and Bioanalytical Chemistry, 411, 4973–4985.
2018:
Marschner K, Pétursdóttir ÁH, Bücker P, Raab A, Feldmann J, Mester Z, Matoušek T, Musil S. 2018. Validation and inter-laboratory study of selective hydride generation for fast screening of inorganic arsenic in seafood. Analytica Chimica Acta. Grein / Article
Pétursdóttir ÁH, Gunnlaugsdóttir H. 2019. Selective and fast screening method for inorganic arsenic in seaweed using hydride generation inductively coupled plasma mass spectrometry (HG-ICPMS). Microchemical Journal, 144:45-50. Grein / Article
Petursdottir AH, Rodrigues de Jesus J, Gunnlaugsdottir H, Feldmann J. 2018. Quantification of labile and stable non-polar arsenolipids in commercial fish meals and edible seaweed samples. Journal of Analytical Atomic Spectrometry 33, (1):102-110. Grein / Article
2015:
Pétursdóttir, A.H., Fletcher K., Gunnlaugsdóttir H., Krupp E., Küpper F.C. , Feldmann J. 2015. Environmental effects on arsenosugars and arsenolipids in Ectocarpus (Phaeophyta). Environ. Chem. Grein / Article
Petursdottir A, Sloth J, Feldmann J. 2015. Introduction of regulations for arsenic in feed and food with emphasis on inorganic arsenic, and implications for analytical chemistry. Anal Bioanal Chem, 2015, 1-12. Grein / Article
2014:
Petursdottir, A. H.; Friedrich, N.; Musil, S.; Raab, A.; Gunnlaugsdottir, H.; Krupp, E. M.; Feldmann, J., Hydride generation ICP-MS as a simple method for determination of inorganic arsenic in rice for routine biomonitoring. Analytical Methods, 2014, 6 (14), 5392 – 5396. Grein / Article
Petursdottir, A., Gunnlaugsdottir, H., Krupp, E., & Feldmann, J. Inorganic arsenic in seafood: Does the extraction method matter? Food Chemistry, 2014, 150, 353-359. Grein / Article
Musil, S.; Pétursdóttir, Á. H.; Raab, A.; Gunnlaugsdóttir, H.; Krupp, E.; Feldmann, J., Speciation without Chromatography Using Selective Hydride Generation: Inorganic Arsenic in Rice and Samples of Marine Origin. Analytical Chemistry 2014, 86, 993-999. Grein / Article
2012:
Pétursdóttir, Á., Gunnlaugsdóttir, H., Jörundsdóttir, H., Mestrot, A., Krupp, E., & Feldmann, J. HPLC-HG-ICP-MS: a sensitive and selective method for inorganic arsenic in seafood. Analytical and Bioanalytical Chemistry, 2012, 1-7. Grein / Article
Petursdottir, A. H., Gunnlaugsdottir, H., Jorundsdottir, H., Raab, A., Krupp, E. M., & Feldmann, J. Determination of inorganic arsenic in seafood: Emphasizing the need for certified reference materials. Pure and Applied Chemistry, 2012, 84(2), 191-202. Grein / Article
2011:
Amayo, K.O., Petursdottir, A. Gunnlaugsdottir, H., Newcombe, C., Raab, A., Krupp, E.M., Feldmann, J. Identification and quantification of arsenolipids using RP-HPLC coupled simultaneously to high resolution ICP-MS high resolution ES-MS without species-specific standards. Analytical Chemistry, 2011, 83, 3589-3595. Grein / Article
SKÝRSLUR:
2015:
Rósa Jónsdóttir, Ásta Heiðrún Pétursdóttir, Halldór Benediktsson, Hilma B. Eiðsdóttir, Karl Gunnarsson, Jóna Freysdóttir. Áhrif vistfræði þangs og þara á lífvirk efni þeirra og nýtingu/ Ecological impact on bioactive chemicals in brown seaweeds and their utilization. Skýrsla Matís 08-15. Lokuð skýrsla. Skýrsluágrip.
A. Petursdottir, S. Musil, N. Friedrich, A. Raab, E. Krupp, J. Feldmann. High throughput determination of inorganic arsenic in rice using hydride generation-ICP-MS. Application note, Agilent Technologies, July. 2015 Skýrsla
2010:
Ásta Heiðrún E. Pétursdóttir, Hrönn Ólína Jörundsdóttir, Helga Gunnlaugsdóttir. Food safety and added value of Icelandic fishmeal – Determination of toxic and non-toxic arsenic species in fish meal / Verðmæti og öryggi íslensks fiskimjöls – Greining eitraðra og hættulausra efnaforma arsens í fiskimjöli. Skýrsla Matís 45-10.