Title: High resolution in-situ monitoring of hyporheic zone biogeochemistry 
Resource Type: document --> technical publication --> report 
Country: United Kingdom 
Year: 2005 
Availability: Bridge, J.W., (2005). High resolution in-situ monitoring of hyporheic zone biogeochemistry (SC030155/SR3) 
Author 1/Producer: Environment Agency 
Author / Producer Type: Agency, regulator or other governmental or inter-governmental body 
Publisher: Environment Agency 
Publisher City: Environment Agency, Rio House, Waterside Drive, Aztec West, Almondsbury, Bristol, BS32 4UD 
ISBN: 184432424 9 
Report / download web link (=direct link): http://publications.environment-agency.gov.uk/pdf/SCHO0605BJ ...  
Format (e.g. PDF): PDF 
Size: (e.g. 20mb) 2 
EUGRIS Keyword(s): Diffuse pollution-->Diffuse pollution overview
Groundwater protection-->Groundwater processes-->Geochemistry
Water resources and their management -->Stresses, quality and ecological status
Short description: This report provides information required by researchers in the field who wish to use highresolution in situ techniques in the hyporheic zone. 
Long description: Existing hyporheic zone research methods are largely based around physical sampling and removal for ex situ analysis. Attempts to conduct in situ measurements have concentrated on the use of chambers that provide some degree of environmental control to improve measurement reliability. True in situ measurement devices range from standard temperature, pH and redox probes to electrochemical probes, such as ion-selective and gel-integrated microelectrodes (GIMEs), and reactive surface probes, such as diffusive gradient in thin film (DGT), diffusive equilibration in thin film (DET) and semi-permeable membrane device (SPMD) probes. These can provide direct measurement of a wide variety of chemical species of interest, including sulphides, metals, trace elements, polychlorinated, organochlorine and polycyclic aromatic hydrocarbons, and a wide range of common nutrient ions. 
Submitted By: Miss Sue Irons WhoDoesWhat?      Last update: 22/02/2006

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