The first personal injury lawsuit involving the chemical dispersant Corexit 9500 has surfaced in Alabama…In Wright v. BP…the plaintiffs claim BP has dumped millions of gallons of toxic chemicals into the Gulf of Mexico to disperse…crude oil… The plaintiffs allege that one method by which the company has applied Corexit 9500 -- spraying it from airplanes in the middle of the night -- has caused Gulf Coast residents to suffer breathing and gastrointestinal problems, as well as property damage. The lawsuit also names Nalco, which manufactures Corexit 9500...The personal injury suit comes one month after a group of Louisiana oystermen filed a federal class action against BP and Nalco…