TY - JOUR
T1 - Health Risk Assessment and Urinary Excretion of Children Exposed to Arsenic through Drinking Water and Soils in Sonora, Mexico
AU - García-Rico, Leticia
AU - Meza-Figueroa, Diana
AU - Jay Gandolfi, A.
AU - del Rivero, Carlos Ibañez
AU - Martínez-Cinco, Marco A.
AU - Meza-Montenegro, Maria M.
N1 - Funding Information: We are grateful to Dr. A. Jay Gandolfi of the University of Arizona for making the arsenic investigation in Sonora, Mexico, a reality, and for his support in consolidating our research group in the arsenic field. In addition, we would like to thank Dr. Paul W. Kilpatrick for helping with the English edition. This research was supported by CONACYT-FONSALUD Grant 000000233976, the NIEHS Superfund Basic Research Program at the University of Arizona (ES 04940), and the PROFAPI_00396 and PROFAPI_539 Grants at ITSON. Funding Information: Acknowledgments We are grateful to Dr. A. Jay Gandolfi of the University of Arizona for making the arsenic investigation in Sonora, Mexico, a reality, and for his support in consolidating our research group in the arsenic field. In addition, we would like to thank Dr. Paul W. Kilpatrick for helping with the English edition. This research was supported by CONACYT-FONSALUD Grant 000000233976, the NIEHS Superfund Basic Research Program at the University of Arizona (ES 04940), and the PROFAPI_00396 and PROFAPI_539 Grants at ITSON. Publisher Copyright: © 2018, Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Environmental arsenic exposure is associated with increased risk of non-cancerous chronic diseases and a variety of cancers in humans. The aims of this study were to carry out for the first time a health risk assessment for two common arsenic exposure routes (drinking water and soil ingestion) in children living in the most important agricultural areas in the Yaqui and Mayo valleys in Sonora, Mexico. Drinking water sampling was conducted in the wells of 57 towns. A cross-sectional study was done in 306 children from 13 villages in the valleys. First morning void urine samples were analyzed for inorganic arsenic (InAs) and monomethyl and dimethyl arsenic (MMA and DMA) by HPLC/ICP-MS. The results showed a wide range of arsenic levels in drinking water between 2.7 and 98.7 μg As/L. Arsenic levels in agricultural and backyard soils were in the range of < 10–27 mg As/kg. The hazard index (HI) = ∑hazard quotient (HQ) for drinking water, agricultural soil, and backyard soil showed values > 1 in 100% of the study towns, and the carcinogenic risk (CR) was greater than 1E−04 in 85%. The average of arsenic excreted in urine was 31.7 μg As/L, and DMA had the highest proportion in urine, with averages of 77.8%, followed by InAs and MMA with 11.4 and 10.9%, respectively, percentages similar to those reported in the literature. Additionally, positive correlations between urinary arsenic levels and HI values were found (r = 0.59, P = 0.000). These results indicated that this population is at high risk of developing chronic diseases including cancer.
AB - Environmental arsenic exposure is associated with increased risk of non-cancerous chronic diseases and a variety of cancers in humans. The aims of this study were to carry out for the first time a health risk assessment for two common arsenic exposure routes (drinking water and soil ingestion) in children living in the most important agricultural areas in the Yaqui and Mayo valleys in Sonora, Mexico. Drinking water sampling was conducted in the wells of 57 towns. A cross-sectional study was done in 306 children from 13 villages in the valleys. First morning void urine samples were analyzed for inorganic arsenic (InAs) and monomethyl and dimethyl arsenic (MMA and DMA) by HPLC/ICP-MS. The results showed a wide range of arsenic levels in drinking water between 2.7 and 98.7 μg As/L. Arsenic levels in agricultural and backyard soils were in the range of < 10–27 mg As/kg. The hazard index (HI) = ∑hazard quotient (HQ) for drinking water, agricultural soil, and backyard soil showed values > 1 in 100% of the study towns, and the carcinogenic risk (CR) was greater than 1E−04 in 85%. The average of arsenic excreted in urine was 31.7 μg As/L, and DMA had the highest proportion in urine, with averages of 77.8%, followed by InAs and MMA with 11.4 and 10.9%, respectively, percentages similar to those reported in the literature. Additionally, positive correlations between urinary arsenic levels and HI values were found (r = 0.59, P = 0.000). These results indicated that this population is at high risk of developing chronic diseases including cancer.
KW - Arsenic
KW - Children
KW - Drinking water
KW - Health risk assessment
KW - Soil
KW - Urinary arsenic
UR - http://www.scopus.com/inward/record.url?scp=85054499961&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85054499961&partnerID=8YFLogxK
U2 - 10.1007/s12011-018-1347-5
DO - 10.1007/s12011-018-1347-5
M3 - Article
C2 - 29721859
SN - 0163-4984
VL - 187
SP - 9
EP - 21
JO - Biological Trace Element Research
JF - Biological Trace Element Research
IS - 1
ER -