Delgado-Andrade C, Navarro M, López H, López M C
Department of Nutrition and Food Science, University of Granada, Granada, Spain.
Food Addit Contam. 2003 Oct;20(10):923-32. doi: 10.1080/02652030310001594450.
The total concentration of arsenic in different foods from south-east Spain was determined by hydride generation atomic absorption spectrometry. Mineralization was carried out with an HNO(3)-HClO(4) mixture in a thermostated sand bath. Arsenic determination was performed by the standard addition method. Analyses of NIST and CBR-CEC reference materials demonstrated the reliability and accuracy of the technique. The highest arsenic levels were found in seafood, cereals, meat and meat by-products. In meat and meat by-products, the total arsenic measured in meat was significantly higher than that in sausages (p<0.05). In cereals, arsenic concentrations in corn and white rice samples were significantly higher (p<0.01) than those measured in wheat by-products. Mean arsenic concentrations in cheese were statistically lower than those in other dairy products (p<0.01). New data have been provided on the total arsenic content of a variety of foods in Spain, which is important for making exposure estimates. The estimated daily intake of total arsenic in the Spanish diet was 221 microg As day(-1).
采用氢化物发生原子吸收光谱法测定了西班牙东南部不同食品中的总砷含量。在恒温砂浴中用硝酸-高氯酸混合液进行消解。采用标准加入法进行砷的测定。对美国国家标准与技术研究院(NIST)和欧洲共同体参考局(CBR-CEC)标准物质的分析证明了该技术的可靠性和准确性。在海鲜、谷物、肉类及肉类副产品中发现了最高的砷含量。在肉类及肉类副产品中,肉中测得的总砷含量显著高于香肠中的总砷含量(p<0.05)。在谷物中,玉米和白米样品中的砷浓度显著高于小麦副产品中的砷浓度(p<0.01)。奶酪中的平均砷浓度在统计学上低于其他乳制品中的砷浓度(p<0.01)。提供了西班牙多种食品总砷含量的新数据,这对于进行暴露评估很重要。西班牙饮食中总砷的估计每日摄入量为221微克砷/天。