Document ID: chunk:federal_register_of_legislation:F2013C00288:reg:12:p6
Version: federal_register_of_legislation:F2013C00288
Segment Type: reg
Provision Reference: reg 12 (pt 6/7)
Character Range: 2306163–2309752

NHMRC (2006), is consistent with that derived from CCME (2007) and EA (2009a) and is similar to that derived by ATSDR (2003) and US EPA (IRIS 2012). Hence the UL from NHMRC is considered reasonable for the quantification of oral intakes associated with selenium and is recommended as a TDI for the derivation of a soil HIL.

There are no dermal or inhalation specific values available for selenium therefore the TDI adopted is considered relevant for all intakes.

    12.4.3     Recommendation
On the basis of the discussion above, the following toxicity reference values (TRVs) have been adopted for selenium in the derivation of HILs:

12.5          Calculated HILs
On the basis of the above, the following HILs have been derived for selenium (refer to Appendix B for equations used to calculate the HILs and Appendix C for calculations):
HIL Scenario            HIL (mg/kg)                      Percentage Contribution from Exposure Pathways
Ingestion of Soil/Dust  Ingestion of Home-grown Produce  Dermal Absorption of Soil/Dust                  Inhalation (dust)
Residential A           200                              62                                              38                 --  <1
Residential B           1400                             100                                             --                 --  <1
Recreational C          700                              100                                             --                 --  <1
Commercial D            10 000                           100                                             --                 --  <1

-- Pathway not included in derivation of HIL

12.6          References
ATSDR 2003, Toxicological Profile for Selenium, US Department of Health and Human Services, ATSDR, available from http://www.atsdr.cdc.gov/ToxProfiles/tp.asp?id=153&tid=28.
CCME 2007, Canadian Soil Quality Guidelines : Selenium, Environmental and Human Health. Scientific Supporting Document. Canadian Council of Ministers of the Environment, Winnipeg.
DEC 2003, Ambient Air Quality Research Project (1996-2001), Internal working paper no. 4, Ambient concentrations of heavy metals in NSW, Department of Environment and Conservation (NSW).
EA 2009a, Contaminants in soil: updated collation of toxicological data and intake values for humans, Selenium. Science report: SC050021, Environment Agency, Bristol, UK.
EA 2009b. Supplementary information for the derivation of SGV for selenium, Science report: SC050021, Environment Agency, Bristol, UK.
FSANZ 2003, The 20th Australian Total Diet Survey. A total diet survey of pesticide residues and contaminants, Food Standards Australia and New Zealand.
FSANZ 2008, The 22nd Australian Total Diet Study, Food Standards Australia and New Zealand.
FSANZ 2011, The 23rd Australian Total Diet Study, Food Standards Australia and New Zealand.
IARC 1987, - Summaries & Evaluations, Selenium and Selenium Compounds, Supplement 7 (1987), p.71, International Agency for Research on Cancer (IARC).
NHMRC 2006, Nutrient Reference Values for Australia and New Zealand including Recommended Dietary Intakes, National Health and Medical Research Council (NHMRC), published in 2006, Commonwealth of Australia, Canberra, Australia.
NHMRC 2011, National water quality management strategy. Australian drinking water guidelines, National Health and Medical Research Council, Australia.
US EPA (IRIS 2012). Data and information available from the Integrated Risk Information System, an online database, available from http://www.epa.gov/iris/.
WHO 1987, Selenium, Environmental Health Criteria 58,