Turpentine is often used as a solvent in plant-based paints. It is believed that turpentine is equally if not more toxic than white spirit (see Green Building Handbook. Volume 1 by Tom Woolley,Sam Kimmins, Paul Harrison and Rob Harrison. p.229). Is it toxic after paint application and for how long?
Updated: I believe that question can be divided on two simpler subproblems (it's worth to consider them together):
what is the speed of turpentine level reduction in regular environmental conditions? As function of time in analytical form or better graphical curve.
determination of the safe level of turpentine in room according to some authoritative standard. This level likely is disputable, so knowing the speed will help - maybe waiting some additional time (a couple of months) before starting to settle in the room will eliminate the risk completely.