Development of Simultaneous Analysis for 8 kinds of Organonitrogen Fungicides in Vegetables and Fruits by FTD-GC

Tonogai, Yasuhide; Tsumura, Yukari; Nakamura, Yumiko; Ito, Yoshio; Miyata, Masahiro; Kamakura, Kazumasa; Hasegawa, Masumi; Wada, Ichirou; Fujiwara, Yasushi

doi:10.3358/shokueishi.34.216

Cited by 4 publications

(5 citation statements)

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“…10) 2) It has a lower detection limit (0.001 ppm for both tetraconazole and diniconazole), rather than 0.03 ppm 12) or 0.01 ppm. 14,22) 3) It is speciˆc for the two compounds, and thus gave the best recovery rate for both, while other methods 6,8,10,11,16,19,28,32,33) used for multipesticide screening are nonspeciˆc for the studied compounds. 4) GC-ECD is comparatively economical, and more available than GC-MS-MS 7,9,10,24,28) or GC-MS. 19,23)…”

Section: Recoverymentioning

confidence: 99%

“…Estimation of the residual amounts of tetraconazole and diniconazole is largely dependent on GC methods using NPD, 11) FPD, 11,25) ECD, 12,14,25) FTD, 22) TSD, 25) GC-MS, 19,23) or GC/MS/MS, 10,24) although better precision and sensitivity values are obtained with the LP-GC/MS/MS approach (lowpressure tandem mass gas chromatography). 7 9,28) HPLC methods are used to a lesser extent, 4,12,16,26,27) LC/MS is used for both fungicides, 33) and LC/MS/ MS (liquid chromatography tandem mass spectrometry) is also used.…”

Section: Introductionmentioning

confidence: 99%

“…16,32) In some cases no clean up is required. 6 9) In the case of diniconazole liquidliquid extraction and solid-phase extraction, 12,14,20) TLC, 15) or column chromatography 16,22) are used for sample clean-up.…”

Section: Introductionmentioning

confidence: 99%

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Determination of Tetraconazole and Diniconazole Fungicide Residues in Tomatoes and Green Beans by Capillary Gas Chromatography

et al. 2007

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A sensitive gas chromatographic method using an electron-capture detector (ECD) has been developed for the determination of tetraconazole and diniconazole fungicide residues in tomatoes and green beans. The developed method consists of extraction with methanol, partition with methylene chloride, and column chromatographic clean-up, followed by capillary gas chromatographic determination. The recoveries of both fungicides were greater than 90％ for both plant samples. The limits of determination of the method were 0.001 ppm for both fungicides. The method was applied to determine residues and the rate of disappearance of tetraconazole and diniconazole from tomatoes and green beans [openˆeld treatment, 50 cc of Domark 10％ EC (emulsiˆable concentrate), and 35 cc of Sumi-eight 5％ EC; both for 100 l of water]. The fungicides incorporated into the plants decreased rapidly with a half-life around 3 days for diniconazole and from 4.5 to 6.5 days for tetraconazole. No residues could be detected in the plants during the period of study of 21 days afterˆeld application. Hence, the plants could be used safely after that period of time.

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Section: Recoverymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Determination of Tetraconazole and Diniconazole Fungicide Residues in Tomatoes and Green Beans by Capillary Gas Chromatography

et al. 2007

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“…The experiment found that when Carb/NH 2 composite column was adopted for purification, (-)-(S,S)-triadimenol had matrix interference peak, and it was unable to conduct quantitative determination. Florisil column was adopted for purification that can remove the matrix interference to the target peak [32], and the mean recovery rate of the target analytes was 95.0%. This experiment also observed the purification effect of self-made Florisil column and commercial Florisil column on the extraction solution of fruit and vegetable puree samples.…”

Section: Optimization Of Purification Conditionsmentioning

confidence: 99%

Analytical research on the separation and residue of chiral pesticide triadimenol in fruit and vegetable puree

Zhang¹,

Xie²,

Hou³

et al. 2021

J of Separation Science

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In this paper, a method for the separation of triadimenol stereoisomers using ultra-performance convergence chromatography and an analytical method for the determination of triadimenol stereoisomer residues in pumpkin puree, apple puree, and tomato puree as a supplement for infants are established. Test samples were extracted with acetonitrile and successively purified with graphitized carbon black and Florisil column. Afterward, Acquity Trefoil AMY1 column was adopted for chiral separation of chromatographic column, and gradient elute was carried out with supercritical carbon dioxide-methanol as the mobile phase and with external standard method for quantitation. Results showed that the linearly dependent coefficient of the four kinds of triadimenol stereoisomers within 1.0 and 50 mg/L was greater than 0.9997, and the limit of quantitation of the four kinds of triadimenol stereoisomers was 0.05 mg/kg. Recovery experiment was carried out within 0.05 and 1.0 mg/kg scope, the recoveries were 81.0-107%, and the relative standard deviation was 2.3-7.6%. This method implemented the separation of triadimenol stereoisomers and its residue test in pumpkin puree, apple puree, and tomato puree as a supplement for infants, and it can provide reliable technical support for the analysis of pesticide residue and assessment of product quality.

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“…4 A number of methods have been reported for determination of BX residues in samples, such as enzyme-linked immunosorbent assay in water and wine 5,6 and gas chromatography in vegetables and fruits. [7][8][9] The method for determination of BX enantiomers in soil and water was reported with (R,R) Whelk-O 1 and cellulose tris-(3,5-dimethylphenylcarbamate) (CDMPC) as chiral stationary phase (CSP). 10 In this study, a high-performance liquid chromatography (HPLC) method for stereoselective determination of BX in rabbit plasma was developed and validated.…”

Section: Introductionmentioning

confidence: 99%

Stereoselective determination of benalaxyl in plasma by chiral high‐performance liquid chromatography with diode array detector and application to pharmacokinetic study in rabbits

et al. 2006

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A chiral high-performance liquid chromatography method with diode array detector was developed and validated for stereoselective determination of benalaxyl (BX) in rabbit plasma. Good separation was achieved at 20 degrees C using cellulose tris-(3,5-dimethylphenylcarbamate) as chiral stationary phase, a mixture of n-hexane and 2-propanol (97:3) as mobile phase at a flow rate of 1.0 ml/min. The assay method was linear over a range of concentrations (0.25-25 microg/ml) in plasma and the mean recovery was greater than 90% for both enantiomers. The limits of quantification and detection for both enantiomers in plasma were 0.25 and 0.1 microg/ml, respectively. Intra- and interday relative standard deviations (RSDs) did not exceed 10% for three-tested concentrations. The method was successfully applied to pharmacokinetic studies of BX enantiomers in rabbits. The result suggested that the pharmacokinetics of BX enantiomers was stereoselective in rabbits.

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Development of Simultaneous Analysis for 8 kinds of Organonitrogen Fungicides in Vegetables and Fruits by FTD-GC

Cited by 4 publications

References 0 publications

Determination of Tetraconazole and Diniconazole Fungicide Residues in Tomatoes and Green Beans by Capillary Gas Chromatography

Determination of Tetraconazole and Diniconazole Fungicide Residues in Tomatoes and Green Beans by Capillary Gas Chromatography

Analytical research on the separation and residue of chiral pesticide triadimenol in fruit and vegetable puree

Stereoselective determination of benalaxyl in plasma by chiral high‐performance liquid chromatography with diode array detector and application to pharmacokinetic study in rabbits

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