Content of selenium, total and inorganic arsenic and bioaccessibility of arsenic in children diets of Mexico.
BACKGROUND
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.


RESULTS
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.


CONCLUSIONS
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.
Centro de Investigación en Alimentación y Desarrollo, A.C. Km 0.6 Carretera a la Victoria, Hermosillo, Sonora, Mexico. lgarciar@ciad.mx
Leticia
L
García-Rico
Lourdes
L
Tejeda-Valenzuela
Dinoraz
D
Vélez
Rosa
R
Montoro
D001151:Arsenic / Q000008:administration & dosage* / Q000378:metabolism; D001682:Biological Availability; D002648:Child; D004032:Diet; D002149:Energy Intake; D004784:Environmental Monitoring / Q000379:methods*; D006801:Humans; D008800:Mexico; D018570:Risk Assessment; D012643:Selenium / Q000008:administration & dosage* / Q000378:metabolism
D012643:Selenium; D001151:Arsenic