Yes, we have quite a few posts and website recommendations on the allergy forum.
Sulfides are not the same as sulfites or sulfates. If you think you have a problem with preservtives it's probably sulfites.
A good list of sulfited foods - whole book length!! http://www.learningtarget.com/nosulfites/index.htm
A good story about
skin rashes caused by sulfites - http://www.housemouse.com/sulfites.htm