Gas composition in headspace of borehole NB04, Cambodia, southeast of Phnom Penh, 2019 - 2020

Dataset title	Gas composition in headspace of borehole NB04, Cambodia, southeast of Phnom Penh, 2019 - 2020
Dataset creators	Naji M Bassil, University of Manchester Laura A Richards, University of Manchester Chivuth Kong, Royal University of Agriculture, Royal University of Agriculture Oliver Moore, University of Manchester, Swedish University of Agricultural Sciences Bart E van Dongen, University of Manchester David A Polya, University of Manchester Jonathan R Lloyd, University of Manchester
Dataset theme	Geoscientific Information
Dataset abstract	Data on gas composition in headspace of borehole NB04. Contains 11 columns of data taken from the headspace of borehole NB04 (at the clay-dominated site) using a GasClam 2.0 (Salamander Group, UK) that continuously measure temperature, atmospheric pressure, borehole pressure, and the percentage of carbon dioxide, oxygen, and methane in the borehole. All data collection for the GOAM project was performed on the same sites located in the Kien Svay district of northern Kandal Province, Cambodia, southeast of Phnom Penh. These sites are referred to as "clay-dominated" and "sand-dominated" in reference to the known lithology and are known for high arsenic concentrations (Richards et al., 2017). Each site contained four 18 m boreholes installed in January 2019 using manual drilling described in Richards et al (2015), spaced evenly about ~1.5 m apart. The boreholes that were located at the clay-dominated site are referred to NB01, NB02, NB03 and NB04. The boreholes that were located at the sand-dominated site are referred to as NB05, NB06, NB07 and NB08. The data taken are from the headspace of borehole NB04 (at the clay-dominated site) This file contains part of the data produced for NERC grant NE/P01304X/1 - called Genetic and molecular basis of organic-arsenic-microbe interactions in arsenic prone aquifers ("GOAM") project.
Dataset content dates	19/05/2019 - 27/01/2020
Dataset spatial coverage	Cambodia, southeast of Phnom Penh
Dataset supply format	MS Excel
Dataset language	English-United Kingdom
Dataset discovery metadata record	Discovery Link to the dataset's BGS Discovery Metadata record
Dataset publisher	NERC EDS National Geoscience Data Centre
Dataset publication date	12/09/2024
Dataset digital object identifier (DOI)	10.5285/6e7552ec-1636-4e0e-9531-1ba8d958a856
Dataset citation text	Bassil, N.M., Richards, L.A., Kong, C., Moore, O., van Dongen, B.E., Polya, D.A., Lloyd, J.R. (2024). Gas composition in headspace of borehole NB04, Cambodia, southeast of Phnom Penh, 2019 - 2020. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/6e7552ec-1636-4e0e-9531-1ba8d958a856
Constraints and terms of use	This data set is available under Open Government Licence, subject to the following acknowledgement accompanying any reproduced materials: "Contains data supplied by permission of the Natural Environment Research Council [YEAR]".
Access the dataset	https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item186114
Further information	Further Information References: Richards, L. A., Lapworth, D. J., Magnone, D., Gooddy, D. C., Chambers, L., Williams, P. J., van Dongen, B. E., Polya, D. A. Dissolved Organic Matter Tracers Reveal Contrasting Characteristics across High Arsenic Aquifers in Cambodia: A Fluorescence Spectroscopy Study. Geoscience Frontiers 2019, 10 (5), 1653-1667. Richards, L. A., Magnone, D., Sovann, C., Kong, C., Uhlemann, S., Kuras, O., van Dongen, B. E., Ballentine, C. J., Polya, D. A. High Resolution Profile of Inorganic Aqueous Geochemistry and Key Redox Zones in an Arsenic Bearing Aquifer in Cambodia. Science of The Total Environment 2017, 590-591, 540-553. Richards, L. A., Magnone, D., van Dongen, B. E., Ballentine, C. J., Polya, D. A. Use of Lithium Tracers to Quantify Drilling Fluid Contamination for Groundwater Monitoring in Southeast Asia. Applied Geochemistry 2015, 63, 190-202.