Fourier transform infrared determination of imidacloprid in pesticide formulations

Quintás, Guillermo; Armenta, Sergio; Garrigues, Salvador; Guárdia, Miguel de la

doi:10.1590/s0103-50532004000200023

Cited by 30 publications

(19 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, some alternative techniques like an enzyme-linked immunosorbent assay (ELISA) [21,22], fluorimetry [23], Fourier transform infrared spectroscopy (FTIR) [24] have been employed for the rapid, selective analysis of neonicotinoid containing samples of different origins. Electroanalytical methods such as differential-pulse polarography (DPP) [25], square-wave adsorptive stripping voltammetry on a hanging mercury drop electrode (HMDE) [26]), have also been published on the determination of imidacloprid, in commercial formulations and spiked river water samples.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Monitoring of Photocatalytic Degradation of Selected Neonicotinoid Insecticides by Cathodic Voltammetry with a Bismuth Film Electrode

et al. 2008

View full text Add to dashboard Cite

An electroanalytical method has been developed for the determination of two water soluble pyridine based neonicotinoid insecticides (imidacloprid and acetamiprid) by differential pulse voltammetry with a bismuth film electrode in aqueous Britton -Robinson buffer solution as supporting electrolyte. The bismuth film electrode preparation was optimized for cathodic voltammetric application. The reduction peaks of the neonicotionids appeared at potentials more negative than À 0.5 V (BiFE vs. Ag/AgCl/3.0 M KCl) and the signal characteristics depended on the pH of the supporting electrolyte. The best analysis conditions were found to be pH 8.0 for imidacloprid and pH 3.0 for acetamiprid at the following measurement parameters: pulse amplitude 50 mV, pulse width 50 ms and scan rate 25 mV. Calibration curves were linear in the concentration range of 2.43 -51.1 mg/cm 3 for imidacloprid and 2.95 -47.3 mg/cm 3 for acetamiprid, while the detection limits were 0.73 mg/cm 3 and 0.88 mg/cm 3 for imidacloprid and acetamiprid, respectively. The electroanalytical method has allowed monitoring the heterogeneous photocatalytic (O 2 /TiO 2 /UV) degradation of the two insecticides via their disappearance. The dynamics and the reaction rate determined on the basis of the electrochemical data were validated with HPLC/DAD and FTIR measurements.

show abstract

Section: Introductionmentioning

confidence: 99%

“…, and pyridine part of the molecule at the bands at 1572 and 1476 cm À1 [24]. The signals completely disappeared after 30 min of illumination.…”

mentioning

confidence: 95%

Monitoring of Photocatalytic Degradation of Selected Neonicotinoid Insecticides by Cathodic Voltammetry with a Bismuth Film Electrode

et al. 2008

View full text Add to dashboard Cite

show abstract

“…FTIR enables identi cation of chemical bonds in drug molecules, polymers or proteins used in formulations [40]. The IR spectra of sodium caseinate, DOX, NaCNs and DOX-NaCNs and their respective physical mixture were recorded using a Varian FTIR equipped with a Varian Resolution Pro 640 software (Agilent, Santa Clara, CA, USA).…”

Section: Compatibility Study Of Dox-nacns Using Ftirmentioning

confidence: 99%

A Comparative Evaluation of Anti-Tumour Activity Following Oral And Intravenous Delivery of Doxorubicin In A Xenograft Model of Breast Tumour

Rehan

Karim

Ahemad

et al. 2021

Preprint

View full text Add to dashboard Cite

Extensive studies have been conducted on natural materials due to their unique and biodegradable properties for oral drug delivery. In the current research, we fabricated sodium caseinate nanomicelles (NaCNs) using casein as a natural polymer to develop a controlled-release oral drug delivery system. NaCNs was explored to improve the therapeutic potential of Doxorubicin (DOX) with reduced toxicity in healthy organs. The synthesized and thoroughly characterized DOX-loaded NaCNs were subjected to in vivo anti-tumour evaluation and bio-distribution analysis in a 4T1-induced breast cancer model. Our findings indicated an almost eight-fold reduction in tumour size in the group orally treated with DOX-NaCNs when compared to free DOX. It is plausible that the enhanced anti-tumour effects of oral DOX-NaCNs is related to the controlled release of DOX from the delivery system as well as the longer circulatory time of the drug in the blood, as confirmed by the bio-distribution study, when compared with free DOX and the intravenous formulation of DOX-NaCNs. Additionally, the tumour drug accumulation for the orally administered DOX-NaCNs was 1.27- and 6.8-fold higher than that of the intravenously administered DOX-NaCNs and free DOX, respectively and overall, was 8.34-times higher than the orally administered free DOX. In comparison, the orally administered DOX-NaCNs showed significant reduction in tumour size (5.66 ± 4.36mm3) after the two doses as compared to intravenously administered DOX-NaCNs (10.29 ± 4.86 mm3) on day 17 of the experimental period. Moreover, NaCNs were well tolerated in the mice at a single dose of 2,000 mg/kg in an acute oral toxicity study. Moreover, no significant change in the body weight was observed after treatment with the single dose of NaCNs when compared to the control group. Thus, NaCNs emerge as a safe and non-toxic delivery system with excellent bio-distribution profile and high anti-tumour effects that present as a potential option for oral chemotherapy.

show abstract

“…Often, such methods of choice are being based on high-and ultra-performance liquid chromatography (HPLC and UPLC) combined with the sensitive detection by a diode-array (Obana et al, 2002;Mandić et al, 2005;Watanabe et al, 2007), mass spectrometry (Obana et al, 2003;Kamel, 2010;Liu et al, 2010), thermal-lens spectrometry (Guzsvány et al, 2007a), amperometric detector (De Erenchun et al, 1997) or with an electrochemical detector and post column photochemical reactor (Rancan et al, 2006a,b). Furthermore, procedures based on photochemically induced fluorescence detection (Vilchez et al, 1998;Vilchez et al, 2001), micellar electrokinetic capillary chromatography (Carretero et al, 2003) and Fourier transform infrared spectrometry (Quintas et al, 2004), simple derivative spectrophotometry (Guzsvány, 2006;Guzsvány et al, 2009a) have also been used for the determination of imidacloprid or thiamethoxam. There are also studies related to bioassayes, the enzyme-linked immuno assay (ELISA) for identifying imidacloprid (Li et al, 2000;Lee et al, 2001;Watanabe et al, 2006), acetamiprid (Watanabe et al, 2006) and thiamethoxam Kim et al, 2006).…”

Section: Instrumental Analysis Of Insecticides a Survey Of Contempormentioning

confidence: 99%

Electroanalysis of Insecticides at Carbon Paste Electrodes with Particular Emphasis on Selected Neonicotinoid Derivatives

Papp¹,

Švancara²,

Vytřas³

2012

Insecticides - Advances in Integrated Pest Management

View full text Add to dashboard Cite

Fourier transform infrared determination of imidacloprid in pesticide formulations

Cited by 30 publications

References 13 publications

Monitoring of Photocatalytic Degradation of Selected Neonicotinoid Insecticides by Cathodic Voltammetry with a Bismuth Film Electrode

Monitoring of Photocatalytic Degradation of Selected Neonicotinoid Insecticides by Cathodic Voltammetry with a Bismuth Film Electrode

A Comparative Evaluation of Anti-Tumour Activity Following Oral And Intravenous Delivery of Doxorubicin In A Xenograft Model of Breast Tumour

Electroanalysis of Insecticides at Carbon Paste Electrodes with Particular Emphasis on Selected Neonicotinoid Derivatives

Contact Info

Product

Resources

About