Oscar Diaz

Dr. Oscar Diaz


Research Focus & Metrics

Academic Career Length

16Years (2011-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 March 2012 in Food and Chemical Toxicology
Verified
Journal Article
Closed access
ODOscar Diaz
Oscar Diaz
YFYasna Tapia Fernández
Yasna Tapia Fernández
OMOciel Muñoz
Ociel Muñoz
RMRosa Montoro
Rosa Montoro
DPDinoraz Velez Velez Pacios
Dinoraz Velez Velez Pacios
CAConcepción Almela
Concepción Almela

ODOscar Diaz
Oscar Diaz
RARafael Arcos
Rafael Arcos
YFYasna Tapia Fernández
Yasna Tapia Fernández
RPRuben Pastene-Olivares
Ruben Pastene-Olivares
DPDinoraz Velez Velez Pacios
Dinoraz Velez Velez Pacios
MBMiriam Becerra
Miriam Becerra
The aim of this study was to estimate both the contribution of drinking water and food (raw and cooked) to the total (t-As) and inorganic (i-As) arsenic intake and the exposure of inhabitants of Socaire, a rural village in Chile´s Antofagasta Region, by using urine as biomarker. The i-As intake from food and water was estimated using samples collected between November 2008 and September 2009. A 24-hour dietary recall questionnaire was given to 20 participants. Drinking water, food (raw and cooked) and urine samples were collected directly from the homes where the interviewees lived. The percentage of i-As/t-As in the drinking water that contributed to the total intake was variable (26.8–92.9). Cereals and vegetables are the food groups that contain higher concentrations of i-As. All of the participants interviewed exceeded the reference intake FAO/OMS (149.8 µg∙i-As·day−1) by approximately nine times. The concentration of t-As in urine in each individual ranged from 78 to 459 ng·mL−1. Estimated As intake from drinking water and food was not associated with total urinary As concentration. The results show that both drinking water and food substantially contribute to i-As intake and an increased exposure risk to adult residents in contaminated areas.

12 April 2011 in Bulletin of Environmental Contamination and Toxicology
Verified
Journal Article
Closed access
ODOscar Diaz
Oscar Diaz
YFYasna Tapia Fernández
Yasna Tapia Fernández
RPRuben Pastene-Olivares
Ruben Pastene-Olivares
SMS. Montes
S. Montes
NNN. Núñez
N. Núñez
RMR. Montoro
R. Montoro

16 May 2019
Verified
Book Chapter
Closed access
ODOscar Diaz
Oscar Diaz
RPRuben Pastene-Olivares
Ruben Pastene-Olivares
FEFrancisco Encina
Francisco Encina
RVRolando Vega
Rolando Vega
COCarlos Oberti-Grassau
Carlos Oberti-Grassau

1 March 2018 in Research Journal of Environmental Sciences
Verified
Journal Article
Open access
ODOscar Diaz
Oscar Diaz
YTYasna M. Tapia
Yasna M. Tapia
RPRuben Pastene-Olivares
Ruben Pastene-Olivares
Phytoaccumulation of Toxic Elements by Native Terrestrial Plants Collected from Arid Desert of Chile

20 June 2018 in Caderno de Pesquisa
Verified
Journal Article
Open access
PDF file
ODOscar Diaz
Oscar Diaz
RPRubén Pastene
Rubén Pastene
El objetivo de la presentación es entregar información actualizada acerca del procedimiento recomendado por agencias internacionales, tales como la Agencia de Estados Unidos para la Protección Ambiental (del inglés USEPA), en los estudios sobre evaluación y la gestión del riesgo en poblaciones humanas expuestas a contaminantes químicos. La evaluación del riesgo para la salud humana, por acción de agentes xenobióticos, incluye las siguientes etapas: Identificación del peligro, evaluación de la exposición, evaluación de la toxicidad, evaluación de los efectos y caracterización del riesgo. Con esta última etapa, se puede llevar a cabo el Plan de Acción, el cual incluye las diferentes medidas que se aplicarán para reducir o mitigar el (los) riesgo(s) y que forma parte de la gestión del riesgo. Se concluye en destacar la importancia de considerar en la evaluación del riesgo, las relaciones dosis-respuesta y tiempo-respuesta, las cuales permiten poder relacionar adecuadamente con las alteraciones epigenéticas observadas.