1 The human PBPK model predictions and experimental data indicate that exposure to ternary mixtures of. approximately 20 ppm each of toluene, ethylbenzene, and xylene will not result in significant increases in. blood levels of these chemicals compared to individual chemical exposure (Haddad et al. 1999b; Tardif. et al.
Shelby, MT. Sponsored Topics. Shelby is a city in and the county seat of Toole County, Montana, United States. The population was 3,216 at the 2000 census. Shelby is located at 48Â°30â²26â³N 111Â°51â²37â³W / 48.50722Â°N 111.86028Â°W / 48.50722; -111.86028 (48.507270, -111.860218).
Memphis is located in Shelby County and is the County Seat for Shelby County. The county had a population of 927,644 people at the 2010 Census. With it's population of 646,889 people, Memphis represented 69.7% of the county's total. In addition, where the city of Memphis has a population density of 1,996 people per square mile [770 people/kmÂ²], Shelby County averages 1,215 people per square mile [469.3 people/kmÂ²].