The occurrence and risk assessment of five organophosphorus pesticides in river water from Shangyu, China

Chen, Hao; Zhu, Jianqiang; Li, Zhe; An, Chen; Zhang, Quan

doi:10.1007/s10661-016-5612-9

Cited by 32 publications

(4 citation statements)

References 31 publications

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“…Further, it is applied for defoliating and desiccating purposes in the harvest of economic crops such as cotton, beans, soybeans, potatoes, sunflowers, sugarcanes, among others [6]. The ubiquity of these pesticides in various environmental matrices including surface waters is due to their relatively low cost, high availability and high solubility in water [7][8][9]. These pesticides reach the aquatic ecosystem through various routes such as direct application, spray-drift, run-off, leaching, and discharge from factories and sewage [10].…”

Section: Introductionmentioning

confidence: 99%

Sublethal concentrations of dichlorvos and paraquat induce genotoxic and histological effects in the Clarias gariepinus

Oladokun

Sogbanmu

Anikwe

2020

Environ Anal Health Toxicol

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Non-target aquatic organisms such as fish may be impacted by agricultural activities through the runoff of pesticides from farms into aquatic ecosystems. In this study, the genotoxic (erythrocytic micronuclei) and histological effects of sublethal concentrations (1% and 10% of 96-h median lethal concentration (LC50) values) of two pesticides (dichlorvos and paraquat) were evaluated in Clarias gariepinus (the African Sharptooth Catfish) for 28 days. The 96-h LC50 of dichlorvos and paraquat against fingerlings of C. gariepinus was 730 µg/L and 50 µg/L, respectively. There was a significant dose-dependent increase (p<0.05) in micronuclei in the erythrocytes of exposed C. gariepinus (2.00±0.82 ‰ to 3.25±1.26 ‰ for dichlorvos and 2.25±0.96 ‰ to 4.75±0.96 ‰ for paraquat) compared to control (0.75±0.96 ‰) by day 28. Gill histological alterations such as mild to severe necrosis and blunting of secondary lamellae were observed in C. gariepinus exposed to higher sublethal concentrations of both pesticides. This study showed that non-target aquatic organisms like C. gariepinus may be at risk of adverse biological effects from exposure to pesticides from non-point sources. We recommend environmental monitoring and sensitization on responsible pesticide use to stakeholders. This will forestall potential adverse ecological effects in aquatic ecosystems.

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Section: Introductionmentioning

confidence: 99%

Sublethal concentrations of dichlorvos and paraquat induce genotoxic and histological effects in the Clarias gariepinus

Oladokun

Sogbanmu

Anikwe

2020

Environ Anal Health Toxicol

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“…According to Directive 2013/39/EU, they are constant causes of mutagenic and carcinogenic fatal damage. Due to their particular ecological durability, both of them are still frequently detected in Poland (Kaczyński et al 2017) and other parts of Europe (Oliveira et al 2015; Quadroni and Bettinetti 2017; Lan et al 2019), as well as outside Europe (Chen et al 2016).…”

Section: Discussionmentioning

confidence: 99%

Behavioural Responses of Unio tumidus Freshwater Mussels to Pesticide Contamination

Chmist

Szoszkiewicz

Drożdżyński

2019

Arch Environ Contam Toxicol

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A pesticide is a chemical substance used for the disposal of pests, such as insects, weeds, invertebrates, or rodents. Pesticides interfere with the normal metabolism of the target species; however, some of them may inadvertently affect organisms other than those targeted. Increased quantities of pesticides in water disturb various ecological processes and may increase the mortality rate of various native species of flora and fauna. One of the groups of organisms that are at the greatest risk from the adverse effects of pesticides is the bivalves. This study was designed to assess the behavioural reaction of bivalves to widespread pesticides. As a representative example, the Polish native Unio tumidus (Philipsson 1788) was used. The study investigated different groups of toxic pesticides, such as herbicides (lenacil), insecticides (thiacloprid, DDT and dichlorvos), and fungicides (tebuconazole), in concentrations of 10 mg L −1 . The results showed various behavioural reactions of bivalves to the pesticides. The most evident were activity time and shell opening rate. Moreover, as a result of DDVP contamination, effects were recorded in terms of shell opening level as well as rapid onset of death. Among the five analysed plant protection products, the most toxic was DDVP. Its presence caused adductor muscle paralysis in all analysed individuals. The least toxic pesticides were DDT and thiacloprid. A strong reaction to lenacil was observed especially in the shell opening rate. Tebuconazole caused significant reductions in activity. Despite the fact that the impact of pesticides on ecosystems is under regular observation, with the use of a wide range of scientific techniques, the use of bivalves was shown to have considerable potential for water quality monitoring.

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“…Moreover, DDVP is still largely used in many developing countries where poor environmental controls are applied [19,20]. The widespread employment of this insecticide has therefore caused its detection in surface waters worldwide, in concentrations ranging from 1.4 to 5630 ng L -1 [21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Priority pesticide dichlorvos removal from water by ozonation process: Reactivity, transformation products and associated toxicity

Cruz-Alcalde

Sans

2018

Separation and Purification Technology

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The treatability of waters contaminated with priority pesticide dichlorvos (DDVP) by means of ozonation has been assessed for the first time. In order to do so, reaction kinetics, transformation mechanisms and associated toxicity have been inspected in detail. Secondorder rate constants of DDVP reactions with O3 and OH• were determined to be 590 and 2.2•10 9 M -1 s -1 , respectively. These values partly explained the degradation profiles obtained during experiments with and without the presence of an OH• scavenger, in which the significant contribution of the indirect degradative route in the removal of DDVP was revealed. LC-MS analyses for ozonated samples allowed the elucidation of desmethyl dichlorvos (d-DDVP), dichloroacetic acid (DCA) and dimethyl phosphate (DMP) as main transformation products (TPs). DMP was found to be present in both O3 and OH•mediated oxidation pathways. Three possible degradation routes were proposed for OH• degradation, whereas the direct oxidation by O3 was only well-explained by the addition of this oxidant to the double bond of DDVP dichlorovinyl moiety. Microtox ® bioassays revealed the inability of molecular ozone to reduce the toxicity of the medium and pointed out the importance of OH• contribution in the degradation process. In general, ozonation could be a suitable treatment alternative for DDVP, formed TPs and associated toxicity abatement.

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The occurrence and risk assessment of five organophosphorus pesticides in river water from Shangyu, China

Cited by 32 publications

References 31 publications

Sublethal concentrations of dichlorvos and paraquat induce genotoxic and histological effects in the Clarias gariepinus

Sublethal concentrations of dichlorvos and paraquat induce genotoxic and histological effects in the Clarias gariepinus

Behavioural Responses of Unio tumidus Freshwater Mussels to Pesticide Contamination

Priority pesticide dichlorvos removal from water by ozonation process: Reactivity, transformation products and associated toxicity

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