TY - JOUR
T1 - The National Human Exposure Assessment Survey (NHEXAS) study in Arizona - Introduction and preliminary results
AU - Robertson, Gary L.
AU - Lebowitz, Michael D.
AU - O'Rourke, Mary Kay
AU - Gordon, Sydney
AU - Moschandreas, Demetrios
N1 - Funding Information:
Preparat ion of t his document has been funded wholly or in part by t he U.S. Environment al Prot ect ion Agency under cooperat ive agreement CR821560 t o t he Universit y of Arizona. It has been subject ed t o agency review and
PY - 1999
Y1 - 1999
N2 - The objective of the National Human Exposure Assessment Survey (NHEXAS) in Arizona is to determine the multimedia distribution of total human exposure to environmental pollutants in the classes of metals, pesticides, and volatile organic compounds (VOCs) for the population of Arizona. This was accomplished by studying a probability-based sample of the total population in Arizona with a nested design for the different stages of sampling (954 Stage I, 505 Stage II, and 179 Stage III participants). This report compares the study population demographics with those from the U.S. Census and provides preliminary data on the distributions of the example pollutant for each class, lead for metals, chlorpyrifos for pesticides, and benzene for metals. The probability-based sample age and gender demographics compare reasonably well with the Census data (1990 Census and 1996 Census Estimate). The race/ethnicity compared less well with 21% Hispanics in the 1996 Census Estimate and 42% Hispanics in the entire NHEXAS-Arizona sample and 30% Hispanics as Stage III participants for this study. The chemical analyses of the various media (yard soil, foundation soil, house dust, indoor air, outdoor air, drinking water, food, and beverage) show generally low levels of the representative pollutants. The 50th percentiles of the distributions are generally near or below the analytical detection limits, and applicable Federal action limits were rarely exceeded.
AB - The objective of the National Human Exposure Assessment Survey (NHEXAS) in Arizona is to determine the multimedia distribution of total human exposure to environmental pollutants in the classes of metals, pesticides, and volatile organic compounds (VOCs) for the population of Arizona. This was accomplished by studying a probability-based sample of the total population in Arizona with a nested design for the different stages of sampling (954 Stage I, 505 Stage II, and 179 Stage III participants). This report compares the study population demographics with those from the U.S. Census and provides preliminary data on the distributions of the example pollutant for each class, lead for metals, chlorpyrifos for pesticides, and benzene for metals. The probability-based sample age and gender demographics compare reasonably well with the Census data (1990 Census and 1996 Census Estimate). The race/ethnicity compared less well with 21% Hispanics in the 1996 Census Estimate and 42% Hispanics in the entire NHEXAS-Arizona sample and 30% Hispanics as Stage III participants for this study. The chemical analyses of the various media (yard soil, foundation soil, house dust, indoor air, outdoor air, drinking water, food, and beverage) show generally low levels of the representative pollutants. The 50th percentiles of the distributions are generally near or below the analytical detection limits, and applicable Federal action limits were rarely exceeded.
UR - https://www.scopus.com/pages/publications/0032695698
UR - https://www.scopus.com/pages/publications/0032695698#tab=citedBy
U2 - 10.1038/sj.jea.7500053
DO - 10.1038/sj.jea.7500053
M3 - Article
C2 - 10554145
AN - SCOPUS:0032695698
SN - 1053-4245
VL - 9
SP - 427
EP - 434
JO - Journal of Exposure Analysis and Environmental Epidemiology
JF - Journal of Exposure Analysis and Environmental Epidemiology
IS - 5
ER -