> Also I am not sure what "lg" is supposed to be probably a typo?  

right

> concentrations also increased in the 2,4-D formulation by 3000% during 96 min of sunlight exposure (from 4.5 to 140 micrograms per kilograms -1)

* The point of the article was to show that 2,4-D not only contains traces of dioxins but it can break down to them when exposed to sunlight. Additionally to warn that the use of these products could result in significant environmental damage from dioxin by products. 

> the use of 2,4-D and PCNB in Australia would result in the formation of approximately 820 and 350000 grams of PCDD/Fs per year a usage of 6000 and 6200 tons of formulation per year

> Considering estimated emissions from other sources in Australia release of PCDD/Fs to soil in this order of magnitude would represent among the most significant sources. 

PLB

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