Micro liquid–liquid extraction of synthetic pyrethroids from surface waters for liquid-chromatographic determination

Albaseer, Saeed S.; Rao, R. Nageswara; Swamy, Y.V.; Mukkanti, K.; Bandi, Boje Gowda

doi:10.1080/02772248.2011.589843

Cited by 6 publications

(3 citation statements)

References 13 publications

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“…In water samples of paddy fields, CMN was detected at a concentration of 0.6 μg/L . In surface water, CMN ranges from less than 1 μg/L to 2.8 μg/L and even to as high as 4.9 μg/L after heavy rains . However, CMN has been recently classified as a restricted pesticide by the US Environmental Protection Agency (EPA) owing to its high toxicity to fish, characterized as alters the swimming behavior and causes histopathological changes in the gills, liver, and gonads. , Environmental pollution resulting from the abuse of chemicals is a potential threat to all levels of biological organization, including human health and aquatic organisms. , To contemplate a clean environment in a policy and planning, unless possible effects on aquatic inhabitants are assessed it can only be a dream.…”

Section: Introductionmentioning

confidence: 99%

ROS-Induced Hepatotoxicity under Cypermethrin: Involvement of the Crosstalk between Nrf2/Keap1 and NF-κB/iκB-α Pathways Regulated by Proteasome

Zhao

Wang

Liu

et al. 2021

Environ. Sci. Technol.

121

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Cypermethrin (CMN) is a man-made insecticide, and its abuse has led to potential adverse effects, particularly in sensitive populations such as aquatic organisms. The present study was focused on the toxic phenotype and detoxification mechanism in grass carp (Ctenopharyngodon idella) after treatment with waterborne CMN (0.651 μg/L) for 6 weeks in vivo or 6.392 μM for 24 h in vitro. In vivo, we describe the toxic phenotype of the liver of grass carp in terms of pathological changes, serum transaminase levels, oxidative stress indexes, and apoptosis rates. RNA-Seq analysis (2 × 3 cDNA libraries) suggested a compromise of proteasome and oxidative phosphorylation signaling pathways under CMN exposure. Thus, these two pathways were chosen for the in vitro study, which suggested that the CMN intoxicationinduced proteasome pathway caused hepatotoxicity in the liver cell line of grass carp (L8824 cells). Moreover, pretreatment with MG132, a proteasome inhibitor, displayed protection against the toxic effects of CMN by enhancing antioxidative and antiinflammatory capability by directly inhibiting the proteasomal degradation of nuclear factor erythroid-2 related factor (Nrf2) and IκB-α, thus turning on the transcription of downstream genes of Nrf2 and NF-κB, respectively. Taken together, these results suggest proteasome activity as a reason for CMN-induced hepatotoxicity.

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Section: Introductionmentioning

confidence: 99%

ROS-Induced Hepatotoxicity under Cypermethrin: Involvement of the Crosstalk between Nrf2/Keap1 and NF-κB/iκB-α Pathways Regulated by Proteasome

Zhao

Wang

Liu

et al. 2021

Environ. Sci. Technol.

121

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“…The fortified samples were preconcentrated 100 times by taking 10 mL of the sample and performing liquid–liquid extraction × 3 times with dichloromethane. The final volume of the extract for a µPAD assay was 100 µL [ 55 ]. The accuracy and precision of the type-II pyrethroid detection on a µPAD were expressed as a percentage of recovery and the standard deviation from individual µPAD.…”

Section: Resultsmentioning

confidence: 99%

“…While environmental water samples can be directly analyzed following the assay procedure as previously described, some environmental samples may contain very low concentrations of pyrethroids, below the detection limits of this device without preconcentration. To account for this, environmental water samples can also be preconcentrated via micro liquid–liquid extraction [ 54 , 55 ] and quantified using the assay procedure. To test this, ten milliliters of an environmental water sample was transferred in a 50 mL centrifuge tube and extracted with 1 mL of dichloromethane (DCM) three times.…”

Section: Methodsmentioning

confidence: 99%

A Microfluidic Paper-Based Analytical Device for Type-II Pyrethroid Targets in an Environmental Water Sample

Pengpumkiat

Nammoonnoy²,

Wongsakoonkan

et al. 2020

Sensors

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A detection method for type-II pyrethroids in an environmental water sample using a microfluidic paper-based analytical device (µPAD) is reported here. The detection approach is based on the formation of cyanide from the hydrolysis of type-II pyrethroids and the colorimetric detection of cyanide on a layer-based µPAD. Parafilm and inexpensive laminating pouches were used to create a hydrophobic barrier for the assay on the µPAD. This detection approach was selective to type-II pyrethroids in water for which an environmental water sample was tested. The calibration curves for cypermethrin, deltamethrin, cyhalothrin, and fenvalerate ranged from 2 to 40 µg/mL without sample preconcentration. The lower concentrations of type-II pyrethroids can be assessed by including a preconcentration step prior to the detection on a µPAD. This detection system provides an alternative platform for fast, semiquantitative testing for pesticide contamination in environmental surface water by allowing for portability, low reagent/sample consumption, and low-cost testing.

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Simultaneous determination of pyrethroids and pyrethrins by dispersive liquid-liquid microextraction and liquid chromatography triple quadrupole mass spectrometry in environmental samples

2017

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A simple and environmentally friendly dispersive liquid-liquid microextraction (DLLME) method coupled with electrospray ionization liquid chromatography triple quadrupole mass spectrometry (LC-QqQ-MS/MS) was developed for the simultaneous determination of 17 synthetic and natural pyrethroids. A comparison of solid-phase extraction (SPE) versus DLLME for water samples and only "dilute and shoot" versus the additional extract cleanup by DLLME for sediment samples is reported. Chloroform was the extracting solvent in the DLLME technique for both water and sediment samples. Ultrasonic energy was applied to fully extract the analytes into fine droplets, providing high recoveries in short times. Method detection limits (MDLs) ranged from 0.12 to 0.62 ng L and recoveries from 70 to 119% with RSD values 2-15% (n = 5) for water samples. In sediment samples, MDLs ranged from 0.50 to 2.50 ng g and recoveries from 71 to 112% with RSDs 2-16% (n = 5). The proposed method showed a good linearity within the range of 10-500 ng mL, with coefficients of determination (R ) higher than 0.99. Matrix effects were observed for most compounds in water and sediment (ME%< -10%). The proposed methodology was applied for the analysis of water and sediment samples from Albufera wetland and Turia River. Acrinathrin (48 ng g) and etofenprox (16 ng g) were detected in sediment samples. Graphical abstract Pyrethrins and pyrethroid determination in water and sediments by DLLME and LC-MS/MS.

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Micro liquid–liquid extraction of synthetic pyrethroids from surface waters for liquid-chromatographic determination

Cited by 6 publications

References 13 publications

ROS-Induced Hepatotoxicity under Cypermethrin: Involvement of the Crosstalk between Nrf2/Keap1 and NF-κB/iκB-α Pathways Regulated by Proteasome

ROS-Induced Hepatotoxicity under Cypermethrin: Involvement of the Crosstalk between Nrf2/Keap1 and NF-κB/iκB-α Pathways Regulated by Proteasome

A Microfluidic Paper-Based Analytical Device for Type-II Pyrethroid Targets in an Environmental Water Sample

Simultaneous determination of pyrethroids and pyrethrins by dispersive liquid-liquid microextraction and liquid chromatography triple quadrupole mass spectrometry in environmental samples

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