- Title
- Degradation of four pesticides in five urban landscape soils: human and environmental health risk assessment
- Creator
- Meftaul, Islam Md; Venkateswarlu, Kadiyala; Annamalai, Prasath; Parven, Aney; Megharaj, Mallavarapu
- Relation
- Environmental Geochemistry and Health Vol. 45, Issue 5, p. 1599-1614
- Publisher Link
- http://dx.doi.org/10.1007/s10653-022-01278-w
- Publisher
- Springer
- Resource Type
- journal article
- Date
- 2023
- Description
- Pesticides are the most cost-effective means of pest control; however, the serious concern is about the non-target effects due to their extensive and intensive use in both agricultural and non-agricultural settings. The degradation rate constant (k) and half-life (DT50) of four commonly used pesticides, glyphosate, 2,4-D, chlorothalonil and dimethoate were determined in five Australian urban landscape soils, with varying physicochemical characteristics, to assess their environmental and human health risks. The k values (day−1) for the selected pesticides were inversely proportional to those of organic carbon (OC), silt, clay and Fe and Al oxides, and directly proportional to pH and sand content in soils. In contrast, the calculated values of DT50 (days) of all the four pesticides in five soils positively correlated with OC, clay, silt and oxides of Fe and Al, whereas soil pH and sand content exhibited a negative correlation. The calculated values of environmental indices, GUS and LIX, for the selected pesticides indicate their potential portability into water bodies, affecting non-target organisms as well as food safety. The evaluation for human non-cancer risk of these pesticides, based on the calculated values of hazard quotient (HQ) and hazard index (HI), suggested that exposure of adults and children to soils, contaminated with 50% of initially applied concentrations, through ingestion, dermal and inhalation pathways might cause negligible to zero non-carcinogenic risks. The present data might help the stakeholders in applying recommended doses of pesticides in urban landscapes and regulatory bodies concerned in monitoring the overall environmental quality and implementing safeguard policies. Our study also clearly demonstrates the need for developing improved formulations and spraying technologies for pesticides to minimize human and environmental health risks.
- Subject
- urban soils; pesticide degradation; half-time; human health risk; environmental hazard; SDG 3; SDG 11; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1478060
- Identifier
- uon:50091
- Identifier
- ISSN:0269-4042
- Rights
- This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
- Language
- eng
- Full Text
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Goal 11: Sustainable Cities and Communities
Goal 3: Good Health and Well-Being
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