Preparation of bovine muscle, bovine liver and pig kidney reference materials and the certification of the contents of nine elements of toxicological and nutritional interest

Metal concentrations and distributions in the human olfactory bulb in Parkinson’s disease

“…The ICP-MS was tested for carryover every eight samples, and the probe was rinsed in 2% HNO 3 between each sample, while calibration standards were remeasured every 24 samples to correct for machine drift. The high fat content of brain (approximately 40% in grey matter, 50–65% in white matter, and 80% in myelin 101 ) meant that common biological certified reference materials such as bovine liver (approximately 11% fat 102 ) were unsuitable for use as a measure of digestion efficiency. Final concentrations from ICP-MS measurements thus provide a guide to total concentrations rather than absolute quantities.…”

Preparo e caracterização de um material de referência de rim bovino

“…Tanto no comércio nacional quanto no internacional dos produtos cárneos, e no consumo destes produtos pela população, é de vital importância assegurar sua inocuidade. (IHNAT et al, 1987(IHNAT et al, , 1994(IHNAT et al, , 2000O'KEEFFE et al, 1997;WAGSTAFFE et al, 1987, ZEISLER et al, 2009 A Análise por Ativação Neutrônica, NAA, é uma técnica analítica utilizada principalmente para a determinação de elementos traço com alta sensibilidade e boa precisão e exatidão, sendo útil para análises multielementares quali e quantitativas em amostras dos mais variados campos de aplicação (GREENBERG et al, 1984).…”