Centro de Investigación en Alimentación y Desarrollo, A.C. Km 0.6 Carretera a la Victoria, Hermosillo, Sonora, Mexico.
J Sci Food Agric. 2012 Jun;92(8):1725-31. doi: 10.1002/jsfa.5538. Epub 2012 Jan 6.
The aim of this study was to evaluate the intake of selenium, total and inorganic arsenic and the bioaccessibility of arsenic in diets of Mexican schoolchildren using an in vitro method.
Total and inorganic arsenic concentrations in the diets ranged from 0.05 to 1.15 mg kg(-1) dry weight (DW) and from 0.023 to 0.088 mg kg(-1) DW respectively, while selenium levels were between 0.08 and 0.20 mg kg(-1) DW. Daily intake of total and inorganic arsenic ranged from 0.15 to 10.49 µg day(-1) kg(-1) body weight (BW) and from 0.06 to 1.11 µg day(-1) kg(-1) BW respectively, while that of selenium varied from 0.29 to 2.63 µg day(-1) kg(-1) BW. Bioaccessibility of total and inorganic arsenic ranged from 4 to 97% (mean 44 ± 21.5%) and from 33 to 97% (mean 71 ± 22.5%) respectively.
Inorganic arsenic levels in the diets were low. Therefore there appears to be a low risk of adverse effects resulting from excess inorganic arsenic intake from these diets.
本研究旨在采用体外方法评估墨西哥学童膳食中的硒、总砷和无机砷摄入量及其生物可给性。
膳食中的总砷和无机砷浓度范围分别为 0.05 至 1.15 毫克/千克干重（DW）和 0.023 至 0.088 毫克/千克 DW，而硒水平在 0.08 至 0.20 毫克/千克 DW 之间。总砷和无机砷的日摄入量范围分别为 0.15 至 10.49 微克/天·千克体重（BW）和 0.06 至 1.11 微克/天·千克 BW，而硒的摄入量范围为 0.29 至 2.63 微克/天·千克 BW。总砷和无机砷的生物可给性范围分别为 4 至 97%（平均 44 ± 21.5%）和 33 至 97%（平均 71 ± 22.5%）。
膳食中的无机砷水平较低。因此，从这些膳食中摄入过量无机砷可能导致不良影响的风险似乎较低。
