Identification info

Metadata Language

English (en)

Dataset Reference Date ()

2015-02-01

Identifier

http://data.bgs.ac.uk/id/dataHolding/13607161

Maintenance and update frequency

notApplicable

GEMET - INSPIRE themes

• Geology

BGS Thesaurus of Geosciences

• Sampling
• Water sampling
• Water chemistry
• Surface waters
• Geology
• Water analysis
• Groundwater

Keywords

• NERC_DDC

Limitations on Public Access

otherRestrictions

Other constraints

restricted

Other constraints

The dataset has been formally approved by BGS for access by external clients under a BGS Digital Data Licence, issued via BGS's IPR Section. The dataset must not be provided to, or be accessible by, an external client until the IPR Section confirms that signed licence documentation is in place. Refer to the IPR Section (DigitalLE@bgs.ac.) if further advice is required.

Use constraints

otherRestrictions

Other constraints

The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.

Other constraints

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.

Topic category

• Geoscientific information

Extent

KE

Dataset Reference Date ()

2009

Extent

KEN

Dataset Reference Date ()

2009

Extent

KENYA [id=687000]

Dataset Reference Date ()

1979

N

S

E

W

Begin date

2015-02-01

End date

2019-01-31

Additional information

NERC grant NE/M008894/1

Distribution Information

Data format

Quality Scope

dataset

Other

dataset

Statement

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.

Metadata

File identifier

50cdcbae-bc14-628b-e054-002128a47908 XML

Metadata Language

English (en)

Resource type

dataset

Metadata Date

2023-03-30

Metadata standard name

UK GEMINI

Metadata standard version

2.3