Residue Analysis of Organochlorine and Organophosphorus Pesticides in Urban Lake Sediments

Abstract

ABSTRACT:The knowledge of pesticide residual concentrations in the environment is important to understand the threats to the environment and human health, especially when natural resources are used for human consumption. In this context, this study aimed to assess the potential ecological risk and respective sources of sediment contamination by organochlorine and organophosphorus pesticides. The study site was an urban lake located in Cascavel city, western Paraná state, Brazil, where the history of land use and occupation in the urban environment is typically agricultural. Surface sediment samples were collected every three months from April 2010 to June 2013 at five different collection points, totaling 65 samples. Analyses showed that contamination by organochlorine pesticides is related to agricultural activities in the past, with a low ecological risk to benthic organisms. Conversely, organophosphorus pesticides presented a recent and continuous contamination from urban activities, with a risk coefficient, especially for disulfoton, indicating a significant potential adverse effect on organisms. However, in general, the obtained results did not indicate an immediate risk to public health.

Assessment of organophosphate pesticide residues in environmental media of Araromi farm settlement, Osun State, Nigeria

“…The mean concentration of malathion (9.98±8.45 mg/kg) and Azinphos-methyl (11.6±18.0 mg/kg) in the sediment samples were higher than 0.05±0.01 mg/kg and 0.05±0.01 mg/kg respectively reported by Golshani et al [46] in Tajan river. The mean concentration of Azinphosmethyl was higher than 0.57-2.29 mg/kg reported by Cembranel et al [47] in urban lake located in Cascavel city, Brazil. The mean concentrations of pirimiphos-methyl (10.7±11.2 mg/kg) and profenofos (4.73±3.66 mg/kg) are higher than 0.104±0.052 mg/kg and 0.050±0.047 mg/kg reported by Akoto et al [48] in sediments from Tono Reservoir.…”

Exposição a agrotóxicos e suas consequências para a saúde humana

“…Também foi detectado, porém abaixo dos limites legais, clorpirifós, flutriafol, malation metolacloro e permetrina. As amostras de água de chuva demonstraram resíduos de DEA, atrazina, metil paration, malation, metolacloro, endosulfan, flutriafol e endosulfan S, em concentrações que variam de 0,11 a 75,43 µg/L (Moreira et al, 2012) Ademais, em um estudo realizado na água do lago urbano da cidade de Cascavel, estado do Paraná, utilizada no abastecimento público da cidade, conforme informação da Companhia de Saneamento do Paraná (SANEPAR), foi identificado e/ou quantificado resíduos de heptacloro epóxido, DDT, DDD e DDE em 29%, 21%, 13% e 63% das amostras analisadas, respectivamente (Cembranel et al, 2017).…”

Organoclorated and Organophosphorus Pesticides in the Pelotas River Sediment

“…In this way, the concentrations of pollutants vary according to the environmental characteristics to which they are exposed, such as the internal conditions of the river itself (hydrological cycle, resuspension phenomena, deposition, pH, among others), and the external conditions imposed by the environment (precipitation, temperature, erosion, leaching). (Oliveira et al, 2016) 0.98 nd 14.84 nd Yellow river (China) 11.13 NA NA NA Daling river (China) (Wang et al, 2013) 3 NA 0.65 0.52 Scheldt river (Belgium) (Covaci et al, 2005) 7.9 NA NA NA Yangtze estuary (China) (Liu et al, 2008) 2.5 NA NA NA Pearl river delta (China) (Fung et al, 2005) 145.57 NA 17.7 5,6 Atoya river (Nicaragua) (Castilho et al, 2000) 95.5 NA nd NA Danúbio river delta (Romania) (Covaci et al, 2006) 0.8 NA NA NA Densu river (Ghana) (Kuranchie-Mensah et al, 2012) 0.18 0.11 0.68 NA Arc river (France) (Kanzari et al, 2012) 1.24 NA NA NA Cascavel river (Brazil) (Cembranel et al, 2017) 0,398 1,411 0,038 1,014 *This study; n.d. (not detected in the literature cited); NA (not analyzed).…”