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115R485 PhD Persistence, Transformation and Fate of CIPC

Publication Date: 
1 July 2015
Author/Contact :
Author/Contact: 
Gillian MacKinnon

Contractor :
Contractor: 
Scottish Universities Environmental Research Centre (SUERC)

Full Research Project Title: Persistence, Transformation and Fate of CIPC in Commercial Stores
Duration: October 2014 - September 2018

Collaboration

Glasgow (SUERC), SBCSR

Background

CIPC is widely used by the potato industry as a sprout suppressant on crops that are destined to be stored for significant periods of time. It is applied periodically as a fog into both bulk and box stores. A problem that arises from this practice is that CIPC can permeate the building fabric of the store. Unfortunately, even extensive cleaning of a store will not remove the residues entirely. Cross contamination of sensitive commodities housed in stores with a history of CIPC use has been reported previously. This problem is twofold: 1. when the stores are used for housing grains such as wheat and barley, fresh vegetables or seed potatoes and 2. When the contamination from the store is manifested in grain to be used in the manufacturing of bread and biscuits. Many sensitive commodities are now being screened for pesticide residues, including CIPC. Current advice is that where there is any uncertainty or a history of potato storage or CIPC use, then the fabric of the building must be sampled and tested for CIPC residues.

Aims and Approach

Aim: To determine the persistence CIPC contamination found in stores in a range of and strategies for decontamination.

This PhD studentship will determine the degree of CIPC contamination found in stores and study the equilibrium, kinetic and thermodynamic processes involved in CIPC adsorption within building materials. In addition it will develop a quantitative analytical method for trace level CIPC analysis in a range of complex matrices including building materials such as concrete and wood and fresh commodities such as grain, fresh vegetables and seed potatoes. Alongside this, it will investigate the route of and degree of cross-contamination of CIPC on sensitive commodities, and the breakdown of CIPC under store conditions allowing appropriate decontamination strategies to be developed.

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