The developed procedure allowed the individual identification and quantification of benzene and toluene and the determination of the sum of ethylbenzene and xylenes. As it can be seen, benzene was undetected in actual samples, probably as a result of the easy evaporation of this compound, as well as its low concentration in petroleum derivatives (less than 5%, v/v).
Shelby, North Carolina. Shelby is a city in and the county seat of Cleveland County, North Carolina, United States. It lies near the western edge of the Charlotte combined statistical area. The population was 20,323 at the 2010 census.
The Civil War interrupted the life of Shelby and Cleveland County with many of the local men serving in the Confederate forces. Union General George Stoneman's army from Tennessee, a force of 6,000, entered western North Carolina in the spring of 1865, ravaging property, food and supplies in the Shelby vicinity.