Appendix D Food Codes for NHANES - OEHHA

Scientific Review Panel Draft February, 2012
Table F.5. Published Point Estimates and Default Dermal Absorption
Factors (ABS) as Percent of Selected Chemicals from Soil
ABS (percent)
CHEMICAL
OEHHA a
US EPA b
DTSC c
Inorganic chemicals
Arsenic 6 3 3
Beryllium 13
d e
Cadmium 0.2 0.1 0.1
Chromium (VI) 2
d f
Fluoride 13
d e
Lead 3
d e
Mercury 4
d e
Nickel 2
d e
Selenium
Organic chemicals
13
d
e
Di(2-ethylhexyl)phthalate (DEHP) 9
h h
Hexachlorobenzene 4
h h
Hexachlorocyclohexanes (as lindane) 3
h h
4,4’methylene dianiline (MDA) 10
h h
Polychlorinated biphenyls (PCBs)
Polychlorinated dibenzo-p-dioxins and
14 14 15
dibenzofurans (as TCDD)
F-69
3
3, 0.1 g
Polycyclic aromatic hydrocarbons 13 13 15
a
ABS values, as presented in this document by OEHHA. In most cases, the OEHHA
ABS represent dermal absorption values based on the soil vehicle freshly spiked
with the chemical contaminant and placed on skin for up to 24 hrs.
b
(U.S. EPA, 2004)
c
(DTSC, 1994)
d
An ABS point estimate is not specifically listed for this chemical. For inorganics with
insufficient data, USEPA (2004) states that the speciation of the compound is
critical to the dermal absorption and there are too little data to extrapolate a
reasonable default value.
e
California’s Department of Toxic Substances Control (DTSC, 1994) recommends using
1% as the default dermal absorption value for metals, based on Clement
Associates (1988).
f
California’s Department of Toxic Substances Control (DTSC, 1994) in their Preliminary
Endangerment Assessment Guidance Manual does not recommend a fractional
absorption value for Cr(VI) due to lack of systemic carcinogenicity via noninhalation
routes of exposure.
g
USEPA (2004) recommends a dermal absorption fraction from soil of 3%, or a dermal
absorption fraction of 0.1% if the soil organic content is > 10%.
h
No specific default ABS value is listed, although a default dermal absorption fraction for
semivolatile organic compounds (SVOCs) of 10% as a screening method is used
for the majority of SVOCs without dermal absorption fractions.
3