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A Passive‐Discrete Water Sampler for Monitoring Seepage
Author(s) -
Salve Rohit
Publication year - 2005
Publication title -
groundwater
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 94
eISSN - 1745-6584
pISSN - 0017-467X
DOI - 10.1111/j.1745-6584.2005.tb02292.x
Subject(s) - tracer , lithium bromide , fault (geology) , matrix (chemical analysis) , effluent , volumetric flow rate , diffusion , water flow , environmental science , geology , geotechnical engineering , materials science , environmental engineering , engineering , mechanics , composite material , mechanical engineering , physics , heat exchanger , seismology , nuclear physics , thermodynamics
This paper presents the design of the passive‐discrete water sampler (PDWS) which has been developed to facilitate investigations of flow partitioning in fractured rocks. The PDWS continuously isolates seeping water into discrete samples while monitoring the seepage rate. The PDWS was used in a flow and transport experiment that investigated fracture‐matrix interactions. During the experiment, a mix of conservative tracers with significantly different diffusion coefficients (lithium bromide [LiBr] and pentafluorobenzoic acid [PFBA]) was introduced along a fault located in fractured tuffs, and water seeping through the lower end of the fault was collected by the PDWS and analyzed for tracer concentrations. Preliminary results from this investigation show that samples of effluent captured by the PDWS effectively retained temporal changes in the chemical signature, while providing seepage rates.