Potential risk of organochlorine regulation limits in Brazilian soils

Brazil is a major food exporter and consequently a major consumer of pesticides. In the environmental legislation for soil quality maintenance, there are maximum limits allowed for only 8 organochlorine pesticides. In this sense, the aim of the study was to evaluate the potential risk to human healt...

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Bibliographic Details
Published in:Arabian journal of geosciences 2024, Vol.17 (6), Article 185
Main Authors: Lourenson, Alice Pereira, Reis, Fernanda Oliveira, Corrêa, Érico Kunde, da Silva Júnior, Flavio Manoel Rodrigues
Format: Article
Language:English
Subjects:
Agricultural land
Agrochemicals
Carcinogens
Chemical substances
Chlorine compounds
Contaminants
DDD
Dichloroethane
Earth and Environmental Science
Earth Sciences
Environmental law
Environmental legislation
Inhalation
Legislation
Organic compounds
Organochlorine compounds
Organochlorine pesticides
Original Paper
Pesticides
Respiration
Risk assessment
Soil
Soil chemistry
Soil contamination
Soil quality
Soils
Sums
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Summary:Brazil is a major food exporter and consequently a major consumer of pesticides. In the environmental legislation for soil quality maintenance, there are maximum limits allowed for only 8 organochlorine pesticides. In this sense, the aim of the study was to evaluate the potential risk to human health of the regulation limits to agricultural, residential, and industrial soils for the eight organochlorines listed in the legislation. The risk assessment model proposed by the USEPA was used, considering the oral and dermal routes for the non-carcinogenic risk and oral, dermal, and inhalation routes for the carcinogenic risk. The Hazard Index (HI) and the total carcinogenic risk (TCR) were evaluated for the organochlorines individually and their sum. The HI for children of dichloro-diphenyl-dichloroethane (DDD) and the sum of the eight organochlorines were greater than 1, when considering the regulation limits for residential and industrial soils. There was no potential non-carcinogenic and carcinogenic risk for adults, nor risk using limits for agricultural soils. These results demonstrate that the limits provided for in the legislation must be revised for some chemical substances (e.g., DDD), and those studies must be stimulated to predict the toxicological effects of the mixture of contaminants.
ISSN:1866-7511
1866-7538
DOI:10.1007/s12517-024-11995-4