Risk assessment for pesticide mixtures on aquatic ecosystems in China: a proposed framework

2019 ◽  
Vol 76 (2) ◽  
pp. 444-453 ◽  
Author(s):  
Lang Chen ◽  
Shibin Li ◽  
Yanming Zhou ◽  
Xinxin Zhou ◽  
Hui Jiang ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Aquatic Ecosystems ◽  
Pesticide Mixtures

scholarly journals Cyanobacterial Toxins and Peptides in Lake Vegoritis, Greece

Toxins ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 394
Author(s):  
Sevasti-Kiriaki Zervou ◽  
Kimon Moschandreou ◽  
Aikaterina Paraskevopoulou ◽  
Christophoros Christophoridis ◽  
Elpida Grigoriadou ◽  
...  
Keyword(s):  
Public Health ◽  
Risk Assessment ◽  
Simultaneous Determination ◽  
Aquatic Ecosystems ◽  
Human Exposure ◽  
Bioactive Metabolites ◽  
Cyanobacterial Toxins ◽  
Major Threat ◽  
Almost All

Cyanotoxins (CTs) produced by cyanobacteria in surface freshwater are a major threat for public health and aquatic ecosystems. Cyanobacteria can also produce a wide variety of other understudied bioactive metabolites such as oligopeptides microginins (MGs), aeruginosins (AERs), aeruginosamides (AEGs) and anabaenopeptins (APs). This study reports on the co-occurrence of CTs and cyanopeptides (CPs) in Lake Vegoritis, Greece and presents their variant-specific profiles obtained during 3-years of monitoring (2018–2020). Fifteen CTs (cylindrospermopsin (CYN), anatoxin (ATX), nodularin (NOD), and 12 microcystins (MCs)) and ten CPs (3 APs, 4 MGs, 2 AERs and aeruginosamide (AEG A)) were targeted using an extended and validated LC-MS/MS protocol for the simultaneous determination of multi-class CTs and CPs. Results showed the presence of MCs (MC-LR, MC-RR, MC-YR, dmMC-LR, dmMC-RR, MC-HtyR, and MC-HilR) and CYN at concentrations of <1 μg/L, with MC-LR (79%) and CYN (71%) being the most frequently occurring. Anabaenopeptins B (AP B) and F (AP F) were detected in almost all samples and microginin T1 (MG T1) was the most abundant CP, reaching 47.0 μg/L. This is the first report of the co-occurrence of CTs and CPs in Lake Vegoritis, which is used for irrigation, fishing and recreational activities. The findings support the need for further investigations of the occurrence of CTs and the less studied cyanobacterial metabolites in lakes, to promote risk assessment with relevance to human exposure.

scholarly journals Improving Risk Assessment by Predicting the Survival of Field Gammarids Exposed to Dynamic Pesticide Mixtures

2020 ◽  
Vol 54 (19) ◽  
pp. 12383-12392
Author(s):  
Maricor J. Arlos ◽  
Andreas Focks ◽  
Juliane Hollender ◽  
Christian Stamm
Keyword(s):  
Risk Assessment ◽  
Pesticide Mixtures

Fuzzy model for risk assessment of persistent organic pollutants in aquatic ecosystems

2013 ◽  
Vol 178 ◽  
pp. 23-32 ◽  
Author(s):  
X. Seguí ◽  
E. Pujolasus ◽  
S. Betrò ◽  
A. Àgueda ◽  
J. Casal ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Aquatic Ecosystems ◽  
Fuzzy Model

scholarly journals Environmental Risk assessment of Chlorpyrifos and TCP in Aquatic Ecosystems

Revista EIA ◽  
2020 ◽  
Vol 17 (34) ◽  
pp. 1-12
Author(s):  
Mayra Alejandra Gomez Arguello ◽  
Jhon Fredy Narváez Valderrama ◽  
Fredy Alberto Amaringo Villa ◽  
Francisco José Molina Pérez
Keyword(s):  
Risk Assessment ◽  
Pest Control ◽  
Environmental Risk Assessment ◽  
Aquatic Ecosystems ◽  
Systematic Approach ◽  
Organophosphorus Pesticides ◽  
Aquatic Species ◽  
Natural Conditions ◽  
Toxic Compounds ◽  
Residential Environments

Chlorpyrifos is a commonly used pesticide that belong to the organophosphorus pesticides (OPPs) group. Chlorpyrifos is widely used in residential environments and agriculture for pest control. As many OPPs, Chlorpyrifos degrades faster to more complex and toxic compounds under natural conditions, thus diverse effects of these compounds over aquatic species are unknown. Due to the risk that pesticides as Chlorpyrifos, which mainly breaks down to 3,5,6- trichloro-2-pyridinol (TCP) on the ecosystems, there is an increasing need to intensify the environmental monitoring and ecotoxicological risk assessment for both substances. Risk assessment provides a systematic approach for characterizing the nature and magnitude of the risks associated with environmental health hazards. However, in countries like Colombia, where the use of Chlorpyrifos is widespread, the number of investigations on the dynamics and risk involved in the presence of this class of substances in water bodies is limited.

scholarly journals ECOLOGICAL RISK ASSESSMENT (ERA) APPLICATION FOR THE EVALUATION OF IMPACTS ON NATURAL AQUATIC ECOSYSTEMS

2019 ◽  
Vol 22 ◽  
Author(s):  
ÉRIC CESAR PAGLIARINI ◽  
VANESSA BEZERRA DE MENEZES OLIVEIRA ◽  
EVALDO LUIZ GAETA ESPINDOLA
Keyword(s):  
Risk Assessment ◽  
Ecological Risk ◽  
Ecological Risk Assessment ◽  
Aquatic Ecosystems ◽  
Advanced Degree ◽  
Physical Chemical ◽  
Systemic Impact ◽  
Very High ◽  
Degree Of Degradation ◽  
Lines Of Evidence

Abstract The present research employs the Ecological Risk Assessment (ERA) method to evaluate the probability of adverse effects in the water supply of Bom Repouso (MG), a city where the agriculture has caused an advanced degree of degradation of its sources. The methodology is based on the integration of different variables, divided into three Lines of Evidence (chemical, physical-chemical and ecotoxicological), and allows for the evaluation of risk assessment between 0.0 and 1.0 in the sampled environment. Five sampling points were evaluated in three periods, with the results varying between the four possible ratings (from low to very high), and it was not possible to identify a pattern of risk evolution between them. Thus, the method used proved to be efficient in assessing the degree of degradation of the environment, however, additional studies are required to improve this type of systemic impact assessment, based on the evaluation of the environmental degradation.

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