Proppant compositions for use in hydraulic fracturing and methods of using same are disclosed herein. The proppant compositions include a plurality of proppant particulates and at least one particulate of the plurality of proppant particulates containing at least one tracer, wherein the at least one tracer separates from the at least one particulate located inside a fracture of a subterranean formation after a period of time.
STATEMENT OF GOVERNMENTAL INTEREST
 The United States Government has rights in this invention pursuant to Contract No. DE-AC04-94AL85000 between the United States Department of Energy and Sandia Corporation, for the operation of the Sandia National Laboratories.