James Travis: Adsoption is the rigt word when the gold is "chemically" taken onto the carbon surface. Absorbtion is when it is simply contained in entrained water within the voids.
I think that it's very interesting that the scientific term for preg robbing is being debated, when there's very little science known about the process. Certainly there are ores that give low recoveries where a blinding agent, other pretreatment or CIL are not used. Thiosulfate leaching proponents often site its resistence to preg robbing ores as a notable benefit, but I struggle to find meaningful publcations on how to test for "preg robbing" or engineer around it.
Kinetic isotherms will show that almost all ores should be preg robbing to some extent, but how much is too much?
Perhaps the reason that I have so much trouble finding better information is that it is published under completely unGoogleable science talk. Google desktop finds 144 references to preg robbing on my hard drive, whereas just one reference to adsoption losses is found (and the Handbook of Industrial Membrane Tecnology by Porter is not helping me either). Let's keep using words that we can Google for.