Comisión Nacional de Energía Atómica, Gerencia Química, Av. Gral Paz 1499, B1650KNA-San Martín, Buenos Aires, Argentina; Instituto de Investigación e Ingeniería Ambiental (3iA), Universidad de San Martín, Martín de Irigoyen 3100, 1650-San Martín, Buenos Aires, Argentina.
Comisión Nacional de Energía Atómica, Gerencia Química, Av. Gral Paz 1499, B1650KNA-San Martín, Buenos Aires, Argentina.
Food Chem. 2019 Jun 30;284:149-154. doi: 10.1016/j.foodchem.2019.01.104. Epub 2019 Jan 24.
A study was undertaken to quantify the concentration of toxic and potentially toxic elements in samples of rice, rice crackers, rice noodles, infant cereals and rice vinegar available in the Argentine market. The determination of nine elements, namely, As, Cd, Cr, Hg, Ni, Pb, Sb, Se, and Zn in 29 samples was performed by inductively coupled plasma-mass spectrometry. Element concentrations spanned the range (ng g): As, 67-858; Cd, <0.2-24.0; Cr, 36.6-937; Hg, <50; Ni, 38.6-1040; Pb, <2.0-139; Sb, <3.0-24.7; Se, <8.4-178 and Zn, 129-32400. Mercury was not detected in any of the analyzed samples. The highest concentration (32.4 µg g) was found for Zn in infant cereals that according to the label were added by the manufacturer. To assess accuracy, NIST 1568a rice flour was analyzed and results were in good agreement with certified values.
本研究旨在定量分析阿根廷市场上销售的大米、米饼、米粉、婴儿米粉和米醋中有毒和潜在有毒元素的浓度。采用电感耦合等离子体质谱法（ICP-MS）对 29 个样品中的 9 种元素（砷、镉、铬、汞、镍、铅、锑、硒和锌）进行了测定。元素浓度范围为（ng/g）：砷 67-858；镉 <0.2-24.0；铬 36.6-937；汞 <50；镍 38.6-1040；铅 <2.0-139；锑 <3.0-24.7；硒 <8.4-178；锌 129-32400。分析的样品中均未检出汞。在婴儿米粉中发现了最高浓度（32.4 µg/g）的锌，根据标签，制造商添加了这种元素。为了评估准确性，分析了 NIST 1568a 米粉，结果与认证值吻合良好。
