40ba6fd0-3d41-4520-8d78-cc8c893fd974 English ISO/IEC 8859-1 (also known as Latin 1) dataset dataset NERC EDS Environmental Information Data Centre Lancaster Environment Centre, Library Avenue, Bailrigg Lancaster LA1 4AP UK info@eidc.ac.uk https://eidc.ac.uk/ EIDC website The Environmental Information Data Centre (EIDC) is the UK's national data centre for terrestrial and freshwater sciences. information pointOfContact 2025-11-13T16:20:43 UK GEMINI 2.3 OSGB 1936 / British National Grid Polychlorinated biphenyls (PCB), chlorobenzenes (CB) and organochlorine pesticides (OC) data from rivers [LOIS] 2013-07-01 publication 2000-01-01 creation 1373030045461 CEH:EIDC: https://catalogue.ceh.ac.uk/id/40ba6fd0-3d41-4520-8d78-cc8c893fd974 10.5285/40ba6fd0-3d41-4520-8d78-cc8c893fd974 doi: 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 Polychlorinated biphenyls (PCB), chlorobenzenes (CB) and organochlorine pesticides (OC) data from river water collected at various sites within the Humber catchment area as part of the Land Ocean Interaction Study project (LOIS). Data were collected at regular weekly intervals and intermittently during periods of high flows. All sites were samples from early 1994 to the end of 1996 except for O12, which was sampled from November 1994 till November 1996. The sampling was carried out by the LOIS team at York University. The unfiltered samples were transported to the Institute of Terrestrial Ecology, Monks Wood, UK, where they were extracted with hexane, cleaned up by alumina column chromatography, concentrated and then analysed for CBs by Gas Chromatography-Mass Spectrometry (GC-MS) and PCBs and OCs by Gas Chromatography with Electron Capture Detection (GC-ECD). Full details about this dataset can be found at https://doi.org/10.5285/40ba6fd0-3d41-4520-8d78-cc8c893fd974 Fry, M. UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk pointOfContact Leach, D. University of York enquiries@ceh.ac.uk author Meharg, A. Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Wright, J. Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Bachiller-Jareno, N. Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Tindall, I. Centre for Ecology & Hydrology enquiries@ceh.ac.uk author Moore, R. Centre for Ecology & Hydrology enquiries@ceh.ac.uk author NERC EDS Environmental Information Data Centre info@eidc.ac.uk custodian NERC Environmental Information Data Centre info@eidc.ac.uk publisher UK Centre for Ecology & Hydrology enquiries@ceh.ac.uk owner notPlanned Programme is finished Environmental Monitoring Facilities theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication England GeoNames 2006-01-01 creation 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 otherRestrictions no limitations otherRestrictions This resource is made available under the terms of the Open Government Licence otherRestrictions © UK Centre for Ecology & Hydrology otherRestrictions 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 textTable English utf8 environment 1993-09-07 1997-10-29 -2.75 -0.72 53.1 55.8 Comma-separated values (CSV) NERC EDS Environmental Information Data Centre info@eidc.ac.uk distributor https://data-package.ceh.ac.uk/sd/40ba6fd0-3d41-4520-8d78-cc8c893fd974.zip Supporting information Supporting information available to assist in re-use of this dataset. information https://data-package.ceh.ac.uk/data/40ba6fd0-3d41-4520-8d78-cc8c893fd974 Download the data Get a copy of this data download dataset dataset 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 2010-12-08 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.