Raquel Duarte-Davidson

TL;DR: Overall the evidence from human studies suggests that any risk of leukaemia at concentrations of exposure in the general population of 3.7-42 microg/m(3)-that is at concentrations three orders of magnitude less than the occupational lowest observed effect level-is likely to be exceedingly small and probably not detectable with current methods.

TL;DR: The dramatic fall in PCB levels in archived UK soils and vegetation between the mid-1960s and the present is evidence that the latter mechanism is the most important and that a significant proportion of PCBs released into the UK environment in the 1960s have subsequently undergone environmental transport away from the UK.

TL;DR: This paper reviews techniques of exposure assessment and discusses where additional research is likely to pay a significant dividend and what lessons have been learned about conducting exposure assessment for health risk assessments and epidemiological studies.

TL;DR: The effect of PCB transfer via breast milk is shown to be important in lowering the body burden of the mother and substantially increasing that in the offspring, and probably occurs because present day exposure to PCBs through foodstuffs is likely to be lower than in the past.

TL;DR: The United Kingdom is used as a study area in which to examine (i) the relationship between primary and potential secondary emissions of PCDD/Fs; (ii) the balance between atmospheric emissions and deposition; and (iii) the contemporary environmental burden of PC DD/Fs and possible historical input profiles.