Pendimethalin in surface waters of rivers in the proximity of irrigated paddy fields by solid phase microextraction and gas chromatography

Freitas, Léa L.; Sant’Anna, Ernani Sebastião; Suchara, Eliane Aparecida; Benato, Vanira S.; Carasek, Eduardo

doi:10.1080/03067310903582309

Cited by 9 publications

(1 citation statement)

References 20 publications

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“…Due to the common usage of this chemical compound with various formulations, pendimethalin has been detected at high concentrations in rivers in Brittany, France (840 ng/L), and in surface waters in several European countries, which is known to affect various biotic components of freshwater ecosystems, such as phytoplankton, zooplankton, and aquatic fauna [ 9 ]. In Brazil, the contamination by pendimethalin in 53 river water samples ranged from 0.06 to 0.38 μ g/L [ 10 ]. The hard clam samples showed contamination by pendimethalin at levels from 16.1 to 60.1 ng/g in China [ 11 ].…”

Section: Introductionmentioning

confidence: 99%

Determination of Pendimethalin Dynamic Residual Distribution in Crucian Carp Tissues and Associated Risk Assessment

Qiao

Yuan

Gang

et al. 2021

International Journal of Analytical Chemistry

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Pendimethalin has been considered a moderately to extremely toxic compound for fish and aquatic organism. This study developed the determination of dynamic residual distribution for pendimethalin in crucian carp tissues (muscle, liver, kidney, gill, and blood) under semistatic exposure system by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) method. The pendimethalin residues in various fish tissues increased initially and then decreased, and the residue amount of pendimethalin varied from tissue to tissue of crucian carp. Particularly, the pendimethalin accumulation in most fish tissues made significant decreases at two-time points. Pendimethalin was initially absorbed and enriched by fish body, and then partial pendimethalin was discharged into the outside environment through the metabolism function of crucian carp. The residue levels of pendimethalin distributed in crucian carp were ranked in the following decreasing order: liver > kidney > gill or muscle > blood, attributed to the fact that pendimethalin tends to accumulate in lipid-rich tissues of fish. Risk assessment results indicated that the chronic risk from dietary exposure to pendimethalin through crucian carp consumption for Chinese residents was acceptable, along with a lower estimated exposure dose (EED) than acceptable daily intake (ADI) and risk quotient (RQ) < 1. This study performed the first analysis for pendimethalin residual distribution in crucian carp tissues under semistatic exposure condition and provided a reference for pollution control and risk assessment of pendimethalin aimed at aquatic products.

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Section: Introductionmentioning

confidence: 99%

Determination of Pendimethalin Dynamic Residual Distribution in Crucian Carp Tissues and Associated Risk Assessment

Qiao

Yuan

Gang

et al. 2021

International Journal of Analytical Chemistry

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Pesticides (New Generation) and Related Compounds, Analysis of

Ccanccapa

Picó

2017

Encyclopedia of Analytical Chemistry

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This article presents an overview of analytical methods for the analysis of pesticide (new‐generation) and related compounds in the last 5 years, which updates the previous one. Pesticides included in this group display almost no change, but the evolution of analytical techniques is important. In general, new pesticides are now included in multiresidue methods with generic sample treatment methodologies being able to extract as many pesticide classes as possible. However, this article focuses not only on these common multiresidue methods but also on specific methodologies as single‐residue methods for the analysis of new‐generation pesticides. The most widely used detection technique for the determination of pesticides is mass spectrometry (MS) combined with gas chromatography (GC) and/or liquid chromatography (LC). However, the advances in immunoassays, biosensors and other techniques are also included. Finally, the future perspectives and the trends for pesticide residue analysis in food and environmental matrices are outlined.

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Investigation of 10 Herbicides in Surface Waters of a Horticultural Production Catchment in Southeastern Australia

Allinson

Bui

Zhang

et al. 2014

Arch Environ Contam Toxicol

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Herbicides are regularly applied in horticultural production systems and may migrate off-site, potentially posing an ecological risk to surface waterways. However, few studies have investigated the levels and potential ecotoxicological impact of herbicides in horticultural catchments in southern Australia. This study investigated the presence of 10 herbicides at 18 sites during a 5-month period in horticulturally important areas of the Yarra Valley in southeastern Australia. Seven of the 10 herbicides were detected in the streams, in 39 % of spot water samples, in 25 % of surface sediment samples, and in>70 % of the passive sampler systems deployed. Few samples contained residues of ≥2 herbicides. Simazine was the herbicide most frequently detected in water, sediment, and passive sampler samples and had the highest concentrations in water (0.67 μg/L) and sediment (260 μg/kg dry weight). Generally the concentrations of the herbicides detected were several orders of magnitude lower than reported ecotoxicological effect values, including those for aquatic plants and algae, suggesting that concentrations of individual chemicals in the catchment were unlikely to pose an ecological risk. However, little is known about the combined effects of simultaneous, low-level exposure of multiple herbicides of the same mode of action on Australian aquatic organisms nor their contribution when found in mixtures with other pesticides. Further research is required to adequately assess the risk of pesticides in Victorian aquatic environments.

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Pendimethalin in surface waters of rivers in the proximity of irrigated paddy fields by solid phase microextraction and gas chromatography

Cited by 9 publications

References 20 publications

Determination of Pendimethalin Dynamic Residual Distribution in Crucian Carp Tissues and Associated Risk Assessment

Determination of Pendimethalin Dynamic Residual Distribution in Crucian Carp Tissues and Associated Risk Assessment

Pesticides (New Generation) and Related Compounds, Analysis of

Investigation of 10 Herbicides in Surface Waters of a Horticultural Production Catchment in Southeastern Australia

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