A Simple and Efficient Optimized Solid-Liquid Extraction with Low Temperature Partition Procedure for Dissipation and Translocation Study of Pesticide Residues in Rice Grains

Ávila, Mariane Borges Rodrigues de; Faroni, L. R. D.; Heleno, Fernanda Fernandes; Queiroz, Maria Eliana Lopes Ribeiro de; Almeida, Rodrigo I.

doi:10.21577/0103-5053.20200099

Cited by 3 publications

(3 citation statements)

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“…The methodology should have at least a LOQ below the Residual Maximum Limit (RML) of carbendazim in soybean seeds of 1.0 mg kg À 1 . [15] Similar results were obtained by Ávila et al [16] in the analysis of pesticides in rice grains. This method is known as the signal-to-noise method, comparing the measurement of signals from samples at known low concentrations of the compound of interest in the matrix and a blank (matrix free of the compound of interest) of these samples.…”

Section: Validation Methods For Sle-ltp In Soybean Seedssupporting

confidence: 77%

“…The Liquid-Liquid Extraction with Low Temperature Partitioning (LLE-LTP) method showed satisfactory results in the research by Goulart et al, [16] for the extraction of carbamates in water samples with LOD for aldicarb, carbofuran and carbaryl were 10 g L À 1 , 10 g L À 1 and 5 g L À 1 , respectively, and the LOQ were 33 g L À 1 , 33 g L À 1 and 17 g L À 1 , respectively. The LLE-LTP accuracy was greater than 90 % and the coefficient of variation was less than 8.4 %.…”

Section: Chromatographic Analysis Of Watermentioning

confidence: 99%

“…For water samples, LLE-LTP was used, which was optimized and validated by Goulart et al [17] for the determination of carbamates (aldicarb, carbaryl and carbofuran) in water. For the preparation of soybean seed sample, an adaptation of the SLE/LTP method was performed, which was optimized and validated by Ávila et al [16] for pesticide extraction from rice grains. These methods are easy to perform, with high analytical frequency and low consumption of organic solvents.…”

Section: Extractions Of Pesticides In Samplesmentioning

confidence: 99%

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Determination of Pesticides in Soybean Seeds Incorrectly Discarded Near a Spring of the Paranaíba River, GO‐Brazil

Júnior

Cardoso

Goulart

et al. 2021

Chemistry & Biodiversity

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The objective of this research was to evaluate the contamination of pesticides of carbamate and benzimidazole classes in soil, water and soybean seeds, incorrectly discarded near a spring in the state of Goiás-Brazil. The Solid-Liquid and Liquid-Liquid Extraction with Low Temperature Partition (SLE/LTP or LLE/LTP) methods were used for pesticide extraction and the analyses were performed by HPLC-UV. A high resolution mass spectrometer was used to confirm the identity of the compounds present in the seeds. The results showed that the soybeans were treated with the pesticide carbendazim and the dosage was three times higher than established by Brazilian legislation. In the soil and water analyzed there was no presence of the pesticides researched, nor of the carbendazim detected in the seeds. Since this was an environmental crime due to incorrect disposal, it is not known how long ago it occurred. Thus, depending on how long the seeds had been exposed there, the pesticide could have leached out, and caused contamination in the spring and soil. Thus, we conclude that the incorrect disposal of seeds treated with pesticides can be a risk to the permanence of life on the site.

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Section: Validation Methods For Sle-ltp In Soybean Seedssupporting

confidence: 77%

Section: Chromatographic Analysis Of Watermentioning

confidence: 99%