Pore Volume (PV) is defined ...

Pore Volume (PV) is defined as the ratio of a porous material's air  volume  to a porous materials total volume . ... For our purposes, the total  volume  of a part is described by the amount of space contained within an imaginary film that has been tightly shrunken around the outside of the porous part's exterior geometry.

The analyze concemtration charges of solute in effluent form a soil column a breakthrough curve can be plot of ratio C/Co Vs the number of pore volume of effluent collect.Here C is the comcentration of solute found in the effluent. And Co is the initial concentration of solute. For detail please find attached herewith following links,

https://books.google.co.in/books?id=NUcoZNPMQEEC&pg=PA175&lpg=PA175&dq=Pore+Volume+concentration+%E2%80%8Band+pore+%E2%80%8Bvolume&source=bl&ots=5XaHNNj9XD&sig=0F7FUdJ1dgvMr5LTdPXLBAQ4MF0&hl=en&sa=X&ved=0ahUKEwjYkuazmvnTAhUHNo8KHTijA3AQ6AEIYDAG

https://books.google.co.in/books?id=txPjGytEGioC&pg=PA81&lpg=PA81&dq=heavy+%E2%80%8Bmetal+%E2%80%8Bmobilization+in+%E2%80%8Bsoil,%E2%80%8Bpore+volume&source=bl&ots=5qcJl-hCU5&sig=qlSX2QOUMtLifPl4oJxkBWfbZGw&hl=en&sa=X&ved=0ahUKEwjau8LW6vjTAhXFLo8KHc6fAOsQ6AEIMDAB

https://books.google.co.in/books?id=XZt0yWsi_JcC&pg=PA50&lpg=PA50&dq=heavy+%E2%80%8Bmetal+%E2%80%8Bmobilization+in+%E2%80%8Bsoil,%E2%80%8Bpore+volume&source=bl&ots=S1mADcwPIQ&sig=NMxU3G8uROL2qcLi8ZoxV6FIJu0&hl=en&sa=X&ved=0ahUKEwjau8LW6vjTAhXFLo8KHc6fAOsQ6AEIMjAC

https://books.google.co.in/books?id=lyM6SgHXimEC&pg=PA160&lpg=PA160&dq=heavy+%E2%80%8Bmetal+%E2%80%8Bmobilization+in+%E2%80%8Bsoil,%E2%80%8Bpore+volume&source=bl&ots=R-qsobiMY_&sig=RtgS2o5pcmpi_vL1a_BmEplC2sQ&hl=en&sa=X&ved=0ahUKEwjau8LW6vjTAhXFLo8KHc6fAOsQ6AEINjAD

https://books.google.co.in/books?id=39jZ7C3T0b8C&pg=PA42&lpg=PA42&dq=heavy+%E2%80%8Bmetal+%E2%80%8Bmobilization+in+%E2%80%8Bsoil,%E2%80%8Bpore+volume&source=bl&ots=iGCac4RkvH&sig=fjOOaayXDmpPnsAnJ3G6a52U5UE&hl=en&sa=X&ved=0ahUKEwjau8LW6vjTAhXFLo8KHc6fAOsQ6AEIOTAE