Results of two sampling campaigns conducted in Kwale County Kenya in March and June 2016 by GHS/UPC as part of the Gro for GooD project (NERC grant NE/M008894/1)
Results of two sampling campaigns conducted in Kwale County Kenya in March and June 2016 by GHS/UPC as part of the Gro for GooD project. Water samples from over 79 groundwater and 6 surface water (SW) locations were analysed for major ions, stable isotopes, selected trace constituents, electrical conductivity, nitrates, ammonia, pH, DO (Dissolved Oxygen), Eh (oxidation / reduction potential), Temperature, TOC (Total Organic Carbon) and field alkalinity. Most locations were sampled in both March (dry season) and June (wet season). Geology at each location recorded as follows: P - Pliocene Sands, Pls - Pleistocene Sands, Plc - Pleistocene corals. Reference: First step to understand the importance of new deep aquifer pumping regime in groundwater system in a developing country, Kwale, Kenya; Ferrer et al, Geophysical Research Abstracts, Vol. 18, EGU2016-16969, 2016; http://meetingorganizer.copernicus.org/EGU2016/EGU2016-16969.pdf; https://upgro.files.wordpress.com/2015/09/egu16_groforgood_v1.pdf UPC - The Departement of Civil Enginyering de la Universitat Politecnica de Catalunya GHS - Grupo de Hidrologia Subterranea
dataset
:
http://data.bgs.ac.uk/id/dataHolding/13607161
English
Geoscientific information
GEMET - INSPIRE themes, version 1.0:
BGS Thesaurus of Geosciences:
NGDC Deposited Data
Sampling
Water sampling
Water chemistry
Geology
Surface waters
Water analysis
Groundwater
Free:
Free:
NERC_DDC
38.4500,
-4.6700,
39.7000,
-3.5500
KE, KEN, KENYA [id=687000]
creation: 2015-02-01
2015-02-01
-
2019-01-31
University of Oxford
Dr R A Hope
Oxford,
OX1 3QY
email:
not available
Role: principal investigator
University of Oxford
Nancy Gladstone
Oxford,
OX1 3QY
email:
not available
Role: point of contact
Universitat Politècnica de Catalunya
Núria Ferrer
email:
not available
Role: originator
Universitat Politècnica de Catalunya
Albert Folch
email:
not available
Role: originator
Universitat Politècnica de Catalunya
Emilio Custodio
email:
not available
Role: originator
British Geological Survey
Enquiries
email:
not available
Role: distributor
British Geological Survey
Enquiries
email:
not available
Role: point of contact
Data Quality
Three casing volumes of groundwater removed from each handpump or well prior to sampling using electric pump when water column sufficient. Temp, pH, EC25, DO, eH measured by YSI Professional Plus probe with cell flux to avoid air contact (automatic temp compensation for pH and EC25). pH calibrated against pH 7.00 and 4.04 standard solutions 3x/wk. EC25 calibrated against 1413µS/cm standard solution 3x/wk prior to fieldwork. Probes washed in distilled water before and after use; kept in distilled water. Ammonium conc.(mg/l NH4-N, mg/l NH4+) measured by field colorimeter test (colour card - Merck Millipore). Alkalinity measured in situ after filtering sample (0.2µm filters; field titration using digital tritator (Merck Millipore). Samples for cation, anion and trace element analysis filtered with 0.2µm GNWP (Millipore) nylon membrane in 15 mL polypropylene bottles (new membrane at each point). After filtering, cation and trace elements samples acidified with a few drops of 70% HNO3. Water isotopes collected in (2mL) special crystal chromatography tubes with septum cups without headspace. TOC crystal bottles muffled before sampling, filled without headspace, acidified with a few drops of HCl 2N. Samples kept at 4°C in dark coolbox then stored at 4°C until transport to lab in temp-controlled boxes. Labs: Cations, trace metals and TOC - Institute of Environmental Assessment and Water Research (IDAEA) by ICP-AES, ICP-MS and by infrared detector using the NPOC method (Shimatzu TOC-Vcsh); Anions - - Catalan Institute of Water Research (ICRA) using ionic chromatography except phosphates (analysed by spectrophotometry); Br - Grup de tècniques de separació (GTS), Autonomous University of Barcelona by ICP-MS; Environmental isotopes (dD, d18O) - Centro de Hidrogeología de la Universidad de Málaga (CEHIUMA) by Picarro equipment. Quality of chemical analysis checked by performing an ionic mass balance.
INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology
Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
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Either: (i) the dataset is made freely available, e.g. via the Internet, for a restricted category of use (e.g. educational use only); or (ii) the dataset has not been formally approved by BGS for access and use by external clients under licence, but its use may be permitted under alternative formal arrangements; or (iii) the dataset contains 3rd party data or information obtained by BGS under terms and conditions that must be consulted in order to determine the permitted usage of the dataset. Refer to the BGS staff member responsible for the creation of the dataset if further advice is required. He / she should be familiar with the composition of the dataset, particularly with regard to 3rd party IPR contained in it, and any resultant use restrictions. This staff member should revert to the IPR Section (ipr@bgs.ac.uk) for advice, should the position not be clear.
Metadata about metadata
50cdcbae-bc14-628b-e054-002128a47908
British Geological Survey
Environmental Science Centre,Keyworth,
NOTTINGHAM,
NG12 5GG,
United Kingdom
tel: +44 115 936 3100
email:
enquiries@bgs.ac.uk
Role: point of contact
2024-04-24