Appendix D Food Codes for NHANES - OEHHA

SRPcientific Review Panel Draft Version 2 FebruaryJune, 2012
Table E.4. Field study vapor/particle distributions of HCB
Study Particle fraction
Gas phase
Popp et al., 2000
Concentration (% particle) Concentration (% gas)
a
Leipzig area
0.8 pg/Nm
Roitzsch area
Greppin area
3 (0.9%)
0.5 pg/Nm 3 (0.3%)
2.6 pg/Nm 3 83.1 pg/Nm
(0.9%)
3 (99.1%)
145.6 pg/Nm 3 (99.7%)
280.6 pg/Nm 3 Horstmann and
(99.1%)
McLachlan, (1998) b
0.43 pg/m 3 (0.2%)
210 pg/m 3 Lane et al., 1992
(99.8%)
c
Turkey lake
3 pg/m
Pt. Petre
3 (4.1%)
2 pg/m 3 71 pg/m
(2.8%)
3 (95.9%)
69 pg/m 3 Ballschmiter and
(97.2%)
Wittlinger, 1991 d
4 pg/m 3 (3.5%)
110 pg/m 3 (96.5%)
Bidleman et al., 1987 e
20 o C
0 o C
(nd) f (0.1%)
(nd) (0.7%)
E-16
(nd) (99.9%)
(nd) (99.3%)
a Air samples collected near chlorobenzene-contaminated sites of Bitterfeld
region in Germany over a two-week period during the summer of 1998.
b Air samples collected over one year in a forest clearing in Germany from May
1995 to April 1996.
c Air samples collected during spring, summer, and fall of 1987 in rural regions of
Ontario, Canada.
d Air sample taken at a mean ambient temperature of -8 o C outside a small village
near a major road in Germany
e Data collected from Stockholm, Denver and Columbia. Vapor phase
component possibly overestimated due to volatilization (blowoff) from the particle
phase in the sampler.
f No concentration data was provided.
In addition, Foreman and Bidleman (1987) have suggested that field
measurements of HCB particle fractions may be greater than in laboratory
settings because sources in the environment includes combustion-derived HCB
particle incorporation. Similar to dioxins, combustion of organic material that
includes chlorinated substances has been suggested as a primary source of
HCB.
Nevertheless, the minor particle fraction of the HCB results in Table E.4 may still
not be sufficient to support a multipathway analysis. However, when the extreme
environmental persistence of this compound relative to other predominantly
gaseous semi-volatile substances (i.e., nitrosamines and chlorophenols) is taken
into account, it appears that even a fraction of the compound depositing in the
particle bound phase could result in measurable levels in sediment and soil with
possible accumulation over time. Field studies at Lake Superior, a relatively
pristine water body in which organics deposit primarily from atmospheric sources,
have found that HCB accumulated in water, sediment and fish tissue samples