Multiclass MSPD method for pesticide determination in dehydrated Hyptis pectinata (sambacaitá) medicinal plant by GC-MS

Aquino, Adriano; Souza, Michel R.R.; Maciel, Samia Tássia Andrade; Alexandre, Marcelo R.; Navickiene, Sandro

doi:10.1590/s0103-50532011000800017

Cited by 7 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…When comparing to chromatographic methods, our electrochemical method seems to be of similar sensitivity. Only some of chromatographic methods combined with mass spectrometry detection are more sensitive [ 11 , 12 ], while the others are less [ 6 , 8 , 9 , 13 ]. Quantification limit of our method is below the proposed MRL within European Union.…”

Section: Discussionmentioning

confidence: 99%

Improved electroanalytical characteristics for flumetralin determination in the presence of surface active compound

et al. 2017

View full text Add to dashboard Cite

The use of square wave voltammetry (SWV) and square wave adsorptive stripping voltammetry (SWAdSV) in conjunction with a cyclic renewable silver amalgam film electrode for the determination of flumetralin is presented. Poor separation of two overlapped reduction peaks is significantly improved when hexadecyltrimethylammonium bromide is used as a component of the supporting electrolyte solution (together with BR buffer pH 9.5). The SW technique parameters were investigated and found optimal as follows: frequency 50 Hz, amplitude 40 mV, and step potential 5 mV. Accumulation time and potential were studied to select the optimal conditions in adsorptive voltammetry. The analytical curve was linear for the flumetralin concentration range from 1.0 × 10−6 to 1.0 × 10−5 mol dm−3 and from 5.0 × 10−9 to 1.0 × 10−7 mol dm−3 for SWV and SWAdSV, respectively. Detection limit of 6.5 × 10−10 mol dm−3 was calculated for accumulation time 60 s at −0.2 V. The repeatability of the method was determined at a flumetralin concentration level equal to 5.0 × 10−9 mol dm−3 and expressed as %RSD = 5.0% (n = 6). The proposed method was applied and validated successfully by studying the recovery of herbicide content in spiked environmental samples.Graphical abstract

show abstract

Section: Discussionmentioning

confidence: 99%

Improved electroanalytical characteristics for flumetralin determination in the presence of surface active compound

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The application of field-developed biosensors depends directly on the obtained LODs, assessing whether they can detect low concentrations at trace levels of pesticide. Pesticide MRLs should always be considered in reliability studies of pesticide techniques [ 107 , 108 ]. As a result, the low readings were compared to the MLRs established by the Codex Alimentarius [ 109 ] and the United States Environmental Protection Agency (USEPA) [ 110 ].…”

Section: Dataset Visual Approachesmentioning

confidence: 99%

Recent Advances in Nanomaterial-Based Biosensors for Pesticide Detection in Foods

et al. 2022

Self Cite

View full text Add to dashboard Cite

Biosensors are a simple, low-cost, and reliable way to detect pesticides in food matrices to ensure consumer food safety. This systematic review lists which nanomaterials, biorecognition materials, transduction methods, pesticides, and foods have recently been studied with biosensors associated with analytical performance. A systematic search was performed in the Scopus (n = 388), Web of Science (n = 790), and Science Direct (n = 181) databases over the period 2016–2021. After checking the eligibility criteria, 57 articles were considered in this study. The most common use of nanomaterials (NMs) in these selected studies is noble metals in isolation, such as gold and silver, with 8.47% and 6.68%, respectively, followed by carbon-based NMs, with 20.34%, and nanohybrids, with 47.45%, which combine two or more NMs, uniting unique properties of each material involved, especially the noble metals. Regarding the types of transducers, the most used were electrochemical, fluorescent, and colorimetric, representing 71.18%, 13.55%, and 8.47%, respectively. The sensitivity of the biosensor is directly connected to the choice of NM and transducer. All biosensors developed in the selected investigations had a limit of detection (LODs) lower than the Codex Alimentarius maximum residue limit and were efficient in detecting pesticides in food. The pesticides malathion, chlorpyrifos, and paraoxon have received the greatest attention for their effects on various food matrices, primarily fruits, vegetables, and their derivatives. Finally, we discuss studies that used biosensor detection systems devices and those that could detect multi-residues in the field as a low-cost and rapid technique, particularly in areas with limited resources.

show abstract

“…100,101 Dispersão da matriz em fase sólida Introduzida em 1989 por Barker e colaboradores, 102 a dispersão da matriz em fase sólida (matrix solid phase dispersion, MSPD) combina A natureza da coluna de MSPD e a faixa de interações torna a MSPD uma técnica apropriada para isolar e/ou limpar multirresíduo a partir de matrizes complexas. [102][103][104][105][106][107][108][109][110][111][112][113][114] O suporte sólido e o solvente de eluição são parâmetros críticos, mas esses certamente têm in fluência menor que a dispersão da matriz do topo até a base da coluna de MSPD. Na extração em fase sólida (solid phase extraction, SPE), a maioria das substâncias da amostra é retida nos primeiros milímetros do topo da coluna (efeito da matriz), enquanto que em MSPD a deposição da amostra com o sorvente na coluna é uniforme.…”

Section: Método Quechersunclassified

O estado da arte na determinação de resíduos de medicamentos veterinários em alimentos de origem animal empregando técnicas cromatográficas acopladas à espectrometria de massas

Prestes¹,

Martins²,

Friggi³

et al. 2013

Quím. Nova

View full text Add to dashboard Cite

The determination of veterinary drug residues in foods of animal origin is an important issue because of the risk these compounds pose to human health in addition to their persistence and tendency to bioaccumulate. In recent years, significant progress has been made in the area and this review presents the state of the art in sample preparation procedures associated with chromatographic techniques coupled to mass spectrometry for multiresidue determination of veterinary drugs in food of animal origin at concentration levels suitable for the control of residues and contaminants in food.

show abstract

Multiclass MSPD method for pesticide determination in dehydrated Hyptis pectinata (sambacaitá) medicinal plant by GC-MS

Cited by 7 publications

References 15 publications

Improved electroanalytical characteristics for flumetralin determination in the presence of surface active compound

Improved electroanalytical characteristics for flumetralin determination in the presence of surface active compound

Recent Advances in Nanomaterial-Based Biosensors for Pesticide Detection in Foods

O estado da arte na determinação de resíduos de medicamentos veterinários em alimentos de origem animal empregando técnicas cromatográficas acopladas à espectrometria de massas

Contact Info

Product

Resources

About