Someone asked today about analyzing for Tributyltin and I did the usual internet search only to find some complicated methods involving GC/ICP or HPLC/ICP then GC/FPD and even GC/MS but all requiring derivitzation. Then I found EPA Method 8323, which I think is not promulgated yet but it was a 2003 method using LC/MS with simple SPE prep. I was wondering if anyone here had ever tried this or something like it. I am thinking of maybe trying it with LC/MS/MS just to see if it would work well. Any suggestions, ideas, or horror stories?