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Title: Monitoring of organo-chlorine pesticides in coastal rivers of Cornwall
Author: R.D. Smith
Document Type: Monograph
Annotation: EA additional title info: environmental protection report
Eight catchments in West Cornwall were monitored for organo-chlorine pesticides in river water on a monthly basis between March 1989 and March 1990 at a total of 32 sites. This work followed the discovery of pesticide pollution from daffodil fields in the Newlyn River Catchment. Low aldrin and dieldrin concentrations were detected at 53% of the monitored sites and occurred in 5 of the 8 monitored catchments. Aldrin and dieldrin occurred in up to 42% of samples collected within the catchments investigated. The Environmental Quality Standard (EQS=30 ng/l combined aldrin and dieldrin) was exceeded on one occasion at two sites in the River Hayle Catchment. There was widespread occurrence of low concentrations of gamma-HCH, with between 10 and 58% of samples obtained from catchments showing positive results. All samples coinplied with the EQS of 100 ng/l. Endrin and DDT isomers were not detected at any of the monitored sites.
Publisher: National Rivers Authority
Publication Date: 1990
Publication Place: Exeter
Subject Keywords: RiversCoastal watersWater pollutionMonitoringPesticides
Geographic Keywords: EA South WestWest Cornwall and the Fal catchment
Extent: n.p. [23]
Total file downloads: 269

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