RT Journal Article ID 6e87b6cb41e58add A1 Alazaiza, Motasem A1 Ngien, Su Kong A1 Bob, Mustafa M. A1 Ishak, Wan Mohd Faizal A1 Kamaruddin, Samira A. T1 AN OVERVIEW OF PHOTOGRAPHIC METHODS IN MONITORING NON-AQUEOUS PHASE LIQUID MIGRATION IN POROUS MEDIUM JF Special Topics & Reviews in Porous Media: An International Journal JO STRPM YR 2015 FD 2016-03-23 VO 6 IS 4 SP 367 OP 381 K1 contaminants K1 NAPL K1 image analysis K1 photographic methods K1 porous media AB Over the last decades and among numerous techniques, image analysis techniques occupy a noticeable place in monitoring non-aqueous phase liquid (NAPL) migration in porous media. In recent years, photographic methods have been shown to be valuable and effective tools for measuring NAPL migration and characterization. This study aims to provide an overview of NAPL fate and behavior in subsurface systems. Furthermore, a review of recent literature published on using photographic methods in NAPL migration in one and two dimensions is summarized and presented in this paper. Besides the discussion of the research efforts, recommendations for future research in using photographic methods are provided. This study concluded that, although photographic methods have some limitations and drawbacks, photographic methods are still promising and valuable tools for measuring NAPL migration. PB Begell House LK https://www.dl.begellhouse.com/journals/3d21681c18f5b5e7,05e9115e78cc50d9,6e87b6cb41e58add.html