Determination of Neonicotinoid Pesticide Nitenpyram and Its Metabolites in Agricultural Products

Tsumura, Yukari; Nakamura, Yumiko; Tonogai, Yasuhide; Kakimoto, Yoshihisa; Tanaka, Y.; Shibata, Tadashi

doi:10.3358/shokueishi.39.127

Cited by 13 publications

(12 citation statements)

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“…D3–7 also supported the imine functional group that was proposed for Deg_03. There is also literature precedent suggesting Deg_03 as a nitenpyram metabolite in plants …”

Section: Resultsmentioning

confidence: 99%

“…There is also literature precedent suggesting Deg_03 as a nitenpyram metabolite in plants. [18] The remaining degradation products identified by retention time and empirical formula did not contain sufficient information in the acquired product ion spectra to propose reaction product structures with a high degree of empirical support. Indeed, it is worth noting that LC/QTOFMS alone is not capable of identifying all of the nitenpyram reaction products, as some could be short-lived or not readily ionize in positive electrospray.…”

Section: Proposed Structures Of Nitenpyram Degradation Productsmentioning

confidence: 99%

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Nitenpyram degradation in finished drinking water

Noestheden

Roberts²,

Hao

2016

Rapid Comm Mass Spectrometry

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Similarities between the identified nitenpyram reaction products and imidacloprid metabolites highlight the importance of this study, as the toxicity of neonicotinoids to pollinators has been linked to their metabolites. Based on the proposed reaction mechanisms, the identified nitenpyram reaction products in finished drinking water could also be present in the environment and water treatment facilities. As such, identifying these degradation products will aid in evaluating the environmental impact of neonicotinoid pesticides. Copyright © 2016 John Wiley & Sons, Ltd.

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“…D3–7 also supported the imine functional group that was proposed for Deg_03. There is also literature precedent suggesting Deg_03 as a nitenpyram metabolite in plants …”

Section: Resultsmentioning

confidence: 99%

Section: Proposed Structures Of Nitenpyram Degradation Productsmentioning

confidence: 99%

Nitenpyram degradation in finished drinking water

Noestheden

Roberts²,

Hao

2016

Rapid Comm Mass Spectrometry

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“…Tsumura et al reported that 80.4% of CPMA in a water/acetone (20 : 150) mixture was converted to CPMF during rotary evaporator concentration and recovery was only 9.0%. 3) In addition, CPMA is highly polar, 2,3) and a chromatogram peak is not as good in shape as twin peaks in separation by common reversed-phase chromatography. 4) Consequently, a novel analytical procedure is required for the measurement of CPMA that would be entail extraction with a lower-ratio-organic solvent and would not require a concentration procedure.…”

Section: Introductionmentioning

confidence: 99%

“…As CPF is not produced under natural conditions, 3) the targets for analysis were the other three compounds. A watermixed solvent was selected for the extraction to prevent conversion of CPMA to CPMF.…”

Section: Introductionmentioning

confidence: 99%

Determination of nitenpyram and its metabolites in agricultural products by using hydrophilic interaction liquid chromatography-tandem mass spectrometry

Yoshida

Murakawa²,

Toda

2013

J. Pestic. Sci.

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A simple and rapid method for the measurement of a neonicotinoid pesticide, nitenpyram, and its metabolites, CPMA and CPMF, was investigated. The three compounds were determined individually and simultaneously by simple ultrasonic extraction followed by hydrophilic interaction liquid chromatography-tandem mass spectrometry (HILIC-MS/MS). Good chromatograms were obtained using a non-modified silica gel column. The calibration curves were straight (R 2 >0.999) for each compound; they were 0.002-2 mg/kg for 5 g of agricultural product sample with limits of detection (S/N=3) of 0.24-0.36 µg/kg (nitenpyram), 0.12-0.19 µg/kg (CPMA), and 0.13-0.18 µg/kg (CPMF). Good recoveries were obtained for sweet pepper, mandarin orange, onion, and brown rice (93.0-106.6% in recovery). For contaminated samples, data by the presented method agreed well with nitenpyram data by HPLC-UV and the total of CPMA and CPMF by derivatization followed by gas chromatography-flame thermionic detection.

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“…En lo que se refiere a la metodología analítica, la mayoría de las investigaciones han sido realizadas utilizando LC, [86][87][88][89][90][91][92][93][94][95][96][97][98][99]101,[103][104][105][107][108][109][110][111][112][113][114][115][116][117][118][119][120][121][122][123][126][127][128][129] con muy pocos trabajos que emplean GC, 125,130,137 la técnica de ELISA 100,134 o electroforesis. 102,106 Dentro de los detectores más utilizados, los que llevan la delantera son los espectrómetros de masas [87][88]…”

Section: Figura 3: Estructura Química De Los Siete Neonicotinoidesunclassified

Residuos de Neonicotinoides y Espinosad en cera y polen : Determinación por LC-ESI-MS

Arellano¹,

Pilar²

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Determination of Neonicotinoid Pesticide Nitenpyram and Its Metabolites in Agricultural Products

Cited by 13 publications

References 0 publications

Nitenpyram degradation in finished drinking water

Nitenpyram degradation in finished drinking water

Determination of nitenpyram and its metabolites in agricultural products by using hydrophilic interaction liquid chromatography-tandem mass spectrometry

Residuos de Neonicotinoides y Espinosad en cera y polen : Determinación por LC-ESI-MS

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