Prioritizing agricultural pesticides used in South Africa based on their environmental mobility and potential human health effects

Dabrowski, J.; Shadung, Justinus; Wepener, Victor

doi:10.1016/j.envint.2013.10.001

Cited by 109 publications

(72 citation statements)

References 28 publications

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“…Muir et al (2004) showed by means of both empirical and modeling approaches that atrazine is capable of regional atmospheric transport, thus making it an important pesticide to study. A recent South African pesticide prioritisation study by Dabrowski et al (2014) featured atrazine as the highest ranked pesticide. Owing in part to its wide use in maize production, this herbicide has frequently been detected in South African freshwater systems (Dabrowski et al, 2013;Du Preez et al, 2005;Pick et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

Validation of the AGDISP model for predicting airborne atrazine spray drift: A South African ground application case study

et al. 2015

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Air dispersion software models for evaluating pesticide spray drift during application have been developed that can potentially serve as a cheaper convenient alternative to field monitoring campaigns.Such models require validation against field monitoring data in order for them to be employed with confidence, especially when they are used to implement regulatory measures or to evaluate potential human exposure levels. In this case study, off-target pesticide drift was monitored during ground application of a pesticide mixture to a sorghum field in South Africa. Atrazine was used as a drift tracer.High volume air sampling onto polyurethane foam (PUF) was conducted at six downwind locations and at four heights at each sampling point. Additional data, including meteorological information, required to simulate the spray drift with the AGDISP® air dispersion model was collected. The PUF plugs were extracted by a plunger method utilising a hexane:acetone mixture with analysis by GC-NPD (94.5% recovery, 3.3% RSD, and LOD 8.7 pg). Atrazine concentrations ranged from 4.55 ng L -1 adjacent to the field to 186 pg L -1 at 400 m downwind. These results compared favourably with modeled output data, resulting in the validation of the model up to 400 m from the application site for the first time.

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Section: Introductionmentioning

confidence: 99%

Validation of the AGDISP model for predicting airborne atrazine spray drift: A South African ground application case study

et al. 2015

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“…Integrating these data together with geographical data of slope, soil and climate in a GIS platform can significantly improve our ability to identify ground-and surface water resources at risk of pesticide exposure through leaching and run-off. Considering the large number of active ingredients used in South Africa, as well as the expense of monitoring these chemicals, the use of these maps in combination with existing information on the relative risks of pesticides to human health and the aquatic ecosystem [18][19][20] provide guidance on which pesticides should be monitored and where they should be monitored. By combining the maps with information on community access to water, we can identify those communities that may be at risk of pesticide exposure through use of river or groundwater for drinking purposes.…”

Section: Application Of Mapsmentioning

confidence: 99%

“…These data were used to prioritise pesticides at a national level for South Africa. 20 The US Geological Survey has sufficient confidence in the data provided by GfK Kynetec to use the data for estimating pesticide use in the USA as part of their National Water Quality Assessment Programme. 26 …”

Section: National Pesticide Use Datamentioning

confidence: 99%

“…carcinogenicity, neurotoxicity, mutagenicity, teratogenicity and endocrine disruption) and their mobility in the environment. 20 Prioritisation studies are an important initial step with respect to identifying those pesticides most likely to pose the greatest risk to human and environmental health. This step is particularly useful in a country where resources and expertise for pesticide monitoring are limited.…”

Section: Introductionmentioning

confidence: 99%

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Development of pesticide use maps for South Africa

Dabrowski¹

2015

S. Afr. J. Sci.

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Over 3000 pesticides are registered for use in South Africa. Many studies have highlighted the movement of pesticides to agricultural crops from the point of application into non-target environments, particularly surface and groundwater resources. Exposure to pesticides can lead to serious human health and environmental effects. It is therefore important to identify critical areas where specific pesticides may result in a high risk of exposure to humans or the environment. Crop specific pesticide use data were obtained from a market research company and integrated into a geographical information system detailing the distribution of agricultural crops in South Africa as determined by an agricultural census performed in 2002. By estimating the total application of a specific pesticide to all crops produced in a magisterial district, it was possible to generate maps which provide an estimate of the application rate of over 200 pesticides per magisterial district. These maps were intersected with an agricultural land-cover map to provide a refined map giving details of the spatial distribution of pesticide use across the country. These maps are the first of their kind in South Africa and provide a spatial overview of the likely distribution of specific active ingredients based on the distribution of crops throughout the country. While there are a number of limitations and uncertainties associated with the data used to produce these maps, these are not unique to South Africa, and similar methodologies have been applied in more developed countries.

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“…Some references also use a weighing system to weigh the various endpoints included in the assessment (Dabrowski et al, 2014;Juraske et al, 2007;Penrose et al, 1994;Valcke et al, 2005l). A general framework for risk ranking that includes the choice of endpoints, weighing endpoints and aggregating the scores into a final risk score is depicted in Figure 1.…”

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confidence: 99%

Critical review of methodology and application of risk ranking for prioritisation of food and feed related issues, on the basis of the size of anticipated health impact

Fels‐Klerx

Asselt

Raley³

et al. 2015

EFSA Supporting Publications

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Document VersionPublisher's PDF, also known as Version of record Link back to DTU Orbit Citation (APA): van der Fels-Klerx, H. J., van Asselt, E. D., Raley, M., Poulsen, M., Korsgaard, H. B., Bredsdorff, L., ... Frewer, L. (2015). Critical review of methodology and application of risk ranking for prioritisation of food and feed related issues, on the basis of the size of anticipated health impact. Europen Food Safety Authority. (EFSA Supporting Publications; No. 710E, Vol. 12(1) ABSTRACTThis study aimed to critically review methodologies for ranking of risks related to feed/food safety and nutritional hazards, on the basis of their anticipated human health impact. An extensive systematic literature review was performed to identify and characterize the available methodologies for risk ranking in the fields of feed and food safety and nutritional hazards, as well as the socio-economic field. Risk ranking methods from the environmental field were studied as well to determine whether approaches used in this field could also be applied for ranking human health risks related to feed and food safety and nutritional hazards. The review used a predefined search protocol. It covered the bibliographic databases Scopus, CAB Abstracts, Web of Sciences, and PubMed over the period 1993-2013. All references obtained were stored into an Endnote database and evaluated for their relevance. All references deemed to be relevant were studied in-depth so as to characterize the risk ranking method described. Characteristics of each method were stored in an Excel database. The methods for risk ranking were then grouped into method categories, which were described in general. These groups included: risk assessment, comparative risk assessment, risk ratio method, scoring method, cost of illness, DALY/QALY, willingness to pay, multi criteria decision analysis, risk matrix, flow charts/decision trees and expert judgment methods. Based on the characteristics of the individual methods and the method categories, an overarching framework was developed for selection of the appropriate method(s) that could be used for risk ranking of feed and food related hazards, on the basis of human health impact. This framework has the format of a decision tool, with which -given the characteristics of the risk ranking question at hand -the most appropriate method(s) can be selected. Application of this overall framework to several case studies showed it can be a useful tool for risk managers/assessors to select the most suitable method for risk ranking of feed/food and diet related hazards, on the basis of expected human health impact. © RIKILT, 2015 DISCLAIMERThe present document has been produced and adopted by the bodies identified above as author(s). This task has been carried out exclusively by the author(s) in the context of a contract between the European Food Safety Authority and the author(s), awarded following a tender procedure. The present document is published complying with the transparency principle to which the Authority is subject. It...

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Prioritizing agricultural pesticides used in South Africa based on their environmental mobility and potential human health effects

Cited by 109 publications

References 28 publications

Validation of the AGDISP model for predicting airborne atrazine spray drift: A South African ground application case study

Validation of the AGDISP model for predicting airborne atrazine spray drift: A South African ground application case study

Development of pesticide use maps for South Africa

Critical review of methodology and application of risk ranking for prioritisation of food and feed related issues, on the basis of the size of anticipated health impact

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