García E M, Cabrera C, Sánchez J, Lorenzo M L, López M C
Department of Nutrition and Bromatology, School of Pharmacy, University of Granada, Spain.
Sci Total Environ. 1999 Oct 29;241(1-3):143-50. doi: 10.1016/s0048-9697(99)00340-x.
Potable water, fruit juices and soft drinks are some of the most widespread beverages in the habitual diet, and they can contribute to chromium dietary intake. We determined the concentration of chromium in 90 different samples of beverages widely consumed in Spain. Graphite furnace atomic absorption spectrometry was used to analyze samples processed with a HNO3-V2O5 acid digestion pretreatment. In water samples Cr was directly determined. We verified the sensitivity, accuracy and precision of the method and ruled out matrix interferences. In analyzed samples, chromium values ranged from not detectable to 11.80 micrograms/l in potable water, from not detectable to 17.60 micrograms/l in fruit juices and from 3.60 to 60.50 micrograms/l in soft drinks. The chromium levels we encountered are low and the contribution of non-alcoholic beverages to dietary intake of this element, have been estimated to be 0.41 microgram/day in the common Spanish diet.
饮用水、果汁和软饮料是日常饮食中一些最常见的饮品，它们能为膳食铬摄入做出贡献。我们测定了西班牙广泛消费的90种不同饮品样本中的铬浓度。采用石墨炉原子吸收光谱法分析经HNO3-V2O5酸消解预处理的样本。在水样中直接测定铬。我们验证了该方法的灵敏度、准确性和精密度，并排除了基体干扰。在所分析的样本中，饮用水中的铬含量范围为未检出至11.80微克/升，果汁中为未检出至17.60微克/升，软饮料中为3.60至60.50微克/升。我们所遇到的铬含量水平较低，据估计，在西班牙普通饮食中，非酒精饮料对该元素膳食摄入的贡献为每天0.41微克。
