Barium concentrations in rain and snow collected near Claremont, NH in 1996-1997 ranged from 0.22-0.84 (mean 0.39) and 0.64-7.44 (mean 1.5) ug/L, respectively(2).
Literature: [(1) Reimann C et al; Atmos Environ 31: 159-70 (1997) (2) ATSDR; Toxicological Profile for Barium and Barium Compounds. Atlanta, GA: Agency for Toxic Substances and Disease Registry, US Public Health Service (2007)] **PEER REVIEWED**
http://toxnet.nlm.nih.gov/cgi-bin/sis/search/a?dbs+hsdb:@term+@DOCNO+6934

Last edited by Denglisch; 01/25/14 06:01 PM.