Date (Publication)

2013-07-01

Date (Creation)

2000-01-01

Identifier

CEH:EIDC: / 1373030045461

Identifier

https://catalogue.ceh.ac.uk/id/40ba6fd0-3d41-4520-8d78-cc8c893fd974

Identifier

doi: / 10.5285/40ba6fd0-3d41-4520-8d78-cc8c893fd974

Other citation details

Leach, D., Meharg, A., Wright, J., Bachiller-Jareno, N., Tindall, I., Moore, R. (2013). Polychlorinated biphenyls (PCB), chlorobenzenes (CB) and organochlorine pesticides (OC) data from rivers [LOIS]. NERC Environmental Information Data Centre 10.5285/40ba6fd0-3d41-4520-8d78-cc8c893fd974

Maintenance and update frequency

notPlanned Not planned

Maintenance note

Programme is finished

GEMET - INSPIRE themes, version 1.0

• Environmental Monitoring Facilities

GeoNames

• England

Keywords

• Water Resources
• Sustainable Land Management
• Ecological Processes & Resilience
• Pollution
• Rees Section
• Humber
• Swale
• Derwent
• Aire
• Calder
• Trent
• Ouse
• Nidd
• water quality
• Tetrachlorobenzene
• Dichlorobenzene
• Trichlorobenzene
• Chlorobenzene
• DDE
• DDT
• Dieldrin
• Hexachlorobenzene
• Hexachloro-1-3-butadiene
• PCB
• Pentachlorobenzene
• TDE
• Land Ocean Interaction Study
• LOIS

Access constraints

otherRestrictions Other restrictions

Other constraints

no limitations

Use constraints

otherRestrictions Other restrictions

Other constraints

This resource is made available under the terms of the Open Government Licence

Use constraints

otherRestrictions Other restrictions

Other constraints

© UK Centre for Ecology & Hydrology

Use constraints

otherRestrictions Other restrictions

Other constraints

If you reuse this data, you should cite: Leach, D., Meharg, A., Wright, J., Bachiller-Jareno, N., Tindall, I., Moore, R. (2013). Polychlorinated biphenyls (PCB), chlorobenzenes (CB) and organochlorine pesticides (OC) data from rivers [LOIS]. NERC Environmental Information Data Centre https://doi.org/10.5285/40ba6fd0-3d41-4520-8d78-cc8c893fd974

Spatial representation type

textTable Text, table

Metadata language

EnglishEnglish

Character set

utf8 UTF8

Topic category

• Environment

Begin date

1993-09-07

End date

1997-10-29

Unique resource identifier

OSGB 1936 / British National Grid

Distribution format

• Comma-separated values (CSV) ()

OnLine resource

Supporting information

Supporting information available to assist in re-use of this dataset.

OnLine resource

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Hierarchy level

dataset Dataset

Other

dataset

Statement

Prior to analysis the samples were stored in the dark at 4 degreesC. The sample (500ml) was transferred to a volumetric flask and extracted with 5 x 10ml aliquots of hexane. The hexane extract was transferred to a to a Kuderna-danish flask via a funnel containing anhydrous sodium sulphate and reduced to approx. 1.5ml at 80 degreesC. The extract was adjusted to exactly 1.0ml under a stream of nitrogen. The whole of the reduced extract was cleaned up on a glass column containing 0.8g of alumina deactivated with 5% water. The cleaned up extract was then reduced to 0.5ml under a stream of nitrogen. An internal standard was added (Dichlobenyl) and each extract split equally into two chromatography vials. Chlorobenzenes were analysed by GC-MS in select ion mode. Organochlorine pesticides and PCB congeners were analysed by GC-ECD. A spiked recovery and a sample blank were included with each batch of samples. The results were not corrected for recovery losses. Limits of detection were defined as the concentration of analyte that gives a signal twice that of the baseline noise. Blank sample bottles were taken into the field during sample collection and opened and closed on site. The blank bottles were extracted with 5 x 10ml of hexane and the hexane extracts analysed by the procedure used for the samples. Spiked recovery samples (hexane washed HPLC grade water, containing 0.5g of clean clay particles, spiked with all the analytes) were included in each batch. OCs and PCBs were identified by relative retention time. CBs were identified by relative retention time and ion ratios (3 ions). Calibration was by the internal standard method. A zip file of box-and-whisker plots for each determinand is available, showing the range of values (median, inter-quartile range, 1.5 * inter-quartile range, outliers) recorded at each site to enable prospective users to understand data quality.

File identifier

40ba6fd0-3d41-4520-8d78-cc8c893fd974 XML

Metadata language

EnglishEnglish

Character set

ISO/IEC 8859-1 (also known as Latin 1) 8859 Part 1

Hierarchy level

dataset Dataset

Hierarchy level name

dataset

Date stamp

2025-11-13T16:20:43

Metadata standard name

UK GEMINI

Metadata standard version

2.3