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Development of air sampling methodology in support of determining risk of bystander and resident exposure to pesticides - PS2023

Description
Bystander and resident potential exposure to pesticides has been studied for particulates such as spray drift, during and shortly after the pesticide application. Fewer data sets are available for the potential exposure of bystanders, particularly residents, to the vapour in the days and weeks following an application of pesticide. This project will evaluate the suitability of absorbent sample tubes, sampling duration and sample location to develop methods suitable for comprehensive sampling protocols to determine airborne concentrations of pesticides. Concurrent localised meteorological measurements will be used to investigate the weather conditions that may be responsible for mobilisation/ remobilisation of pesticide. The methodology developed would be used for follow on projects to measure the airborne pesticide levels measured at a range of distances from treated fields, which would be related to the data available for pesticide use in nearby fields. The meteorological data and measured airborne pesticide levels would provide input parameters for the validation of the model developed in the Defra funded BREAM project.

This fieldwork would be done in late spring, following flag leaf emergence in wheat or barley, when the crop is approximately 0.5 to 0.7m tall. Frequent pesticide treatments can be required to prevent the development of foliar diseases such as Septoria, Rhynchosporium or powdery mildew and insect populations such as aphids or occasionally orange blossom midge. Sampling of airborne concentrations of pesticide vapour close to the treated crop (e.g. 6m) over a period of several weeks would be used to validate the sampling and analytical methodology with a view to allowing future studies to be done to provide data for use in risk assessments for the potential inhalation exposure of bystanders and residents to pesticides.
Objective
1. Develop and validate air sampling and analytical methodology to measure airborne concentrations of pesticide vapours in air, which can be used to generate data for potential inhalation exposure of bystanders and residents.
2. Validation of the field methodology, with measurements of airborne pesticide levels close to the treated area of a cereal field in late spring to generate data for airborne pesticide levels in the days and weeks following application.
Project Documents
• FRP - Final Report : SID5 PS2023 Final Oct 2012   (223k)
Time-Scale and Cost
From: 2009

To: 2010

Cost: £97,513
Contractor / Funded Organisations
The Food & Environment Research Agency
Keywords
Agricultural Land              
Air Quality              
Air quality monitoring              
Analysis              
Analytical Chemistry              
Application              
Crops              
Decision Support Tools              
Environmental Effects              
Environmental monitoring              
Environmental Protection              
Health Effects              
Method Development              
Pesticides              
Fields of Study
Pesticide Safety