Appendix D - Dossier (PDF) - Tera

date: 20–JUL–2005
3. Environmental Fate and Pathways Substance ID: 71–43–2
______________________________________________________________________________
3.6 – 4.1 – 4.0 – 4.1 – 4.5
Source: German Rapporteur
Test condition: Water as a byproduct of offshore oil production is separated
from the oil, injected into the well or discharged into the
North Sea. These waters contain changing concentrations of
benzene and other organic and inorganic pollutants.
For benzene analyses, 10 ml samples were processed.
16–MAR–2004 (1194)
Type of measurement: concentration at contaminated site
Medium: air
Method: Air samples were sampled in canisters and analysed in
accordance with USEPA Method TO–14 (US EPA 1997) by GC–MSD
(no further details reported).
The limit of detection was 0.2 ppbV for benzene.
Result: Benzene concentrations (mg/m**3; n = 62):
1.02 – 11.16; mean: 4.85, standard deviation: 2.21.
Source: German Rapporteur
Test condition: Air sampling took place at Hong Kong Polytechnical
University at a point 6 m above ground anf 8 m away from a
road with 170 000 vehicles per day passing by. The sampling
period was from April 1999 to March 2000.
16–MAR–2004 (510)
Type of measurement: concentration at contaminated site
Medium: air
Method: Whole air samples were collected by personal whole air
sampler units that use mass flow control to collect a
constant flow into an evacuated sampling container.
Adsorbent tube samples were collected using pumps at flow
rates of 17 and 67 ml/min.
Canister samples were analysed after pressurising with a
neutral gas (calculating the dilution factor from the
pressures before and after addition of the neutral gas) by
cryofocussing and capillary–GC–MS (ion trap instrument) with
a packed pre–column.
Adsorbent samples were analysed by thermal desorption,
focussing on a trap at 27°C and capillary–GC–MS (ion trap
instrument).
Benzene was quantified by both methods.
Result: Overall results from canisters and tubes at Sao Paulo
(number of samples / mean (ppbV) / standard error of means
(ppbV):
Canisters: 34 / 2.6 / 0.4. –– Tubes: 78 / 2.5 / 1.0
Results from the above described sampling sites using
canisters | tubes
(number of samples / mean (ppbV) / standard error of means
(ppbV):
Appendix D: Benzene SIDS Dossier
(1) 6 / 3.5 / 0.5 | 16 / 0.8 / 0.2
(2) 6 / 1.4 / 0.3 | 16 / 0.8 / 0.2
(3) 6 / 1.4 / 0.1 | 12 / 1.5 / 0.1
(4) 6 / 3.5 / 0.6 | 6 / 2.9 / 0.6
(5) 4 / 0.9 / 0.1 | 4 / 0.0 / 0.0
(6) 2 / 11.0 / 0.4 | 2 / 0.4 / 0.0
– 148/957 –