Appendix D Food Codes for NHANES - OEHHA

Scientific Review PanelSRP Draft Version 2 February,June 2012
To calculate oral Tcos, OEHHA used adjusted reference half-lives for the
chemicals in adults estimated from dietary and occupational exposures. OEHHA
estimated oral Tcos for these chemicals using estimates of body weight reported
in Chapter 10 of this document, reference half-lives reported in Milbrath et al.
(2009) and the steady-state equation developed by Smith (1987) (Smith, 1987;
Milbrath et al., 2009).
Milbrath et al., (2009), in a systematic review of studies reporting half-lives in the
human body, developed average human biological reference half-lives for 28 out
of 29 dioxins and dioxin-like PCBs with OEHHA-recognized potency factors (see
Table J-2-2) (Milbrath et al., 2009).
J-12