Multiresidue Analysis of Pesticides in Foods Using Acetonitrile Extraction, Gel Permeation Chromatography and Mini-column Cleanup, and Dual-column GC-ECD.

Ueno, Eiji; Oshima, Harumi; Saito, Isao; Matsumoto, Hiroshi

doi:10.3358/shokueishi.41.178

Cited by 17 publications

(4 citation statements)

References 12 publications

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“…24,27,28) Grapefruit was produced by natural crossing pomelo and orange, so it is necessary to note that similar interfering peaks appear over the entire product ions produced from the protonated molecule of imazalil on the chromatograms of the test solution of pomelo by LC conditions. In addition to the MS/MS system, EI-SIM/Scan mode GC-MS, 9) negative chemical ionization (NCI)-SIM/Scan mode GC-MS, 17) dual-column GC-ECD/ECD, 3,11) dual-column GC-FPD/NPD, [4][5][6] ESI-SIM/Scan mode LC-MS with diode-array detection (DAD), 13,14) and HPLC with post-column FLD for residual N-methyl carbamate pesticides, 24,29) were also adopted. Thus, the systematic method using plural separation and detection systems has been constructed.…”

Section: Development Of the Systematic Multi-residue Methodsmentioning

confidence: 99%

“…4). 3,13) Then, to prevent breakthrough of solid-phase extraction (SPE) column, and to fully exhibit the performance of gel permeation chromatography (GPC) column, by removing many high polar contaminants such as salt, sugar and amino acid with the water, after the ultrasonic dehydration and re-dissolution method using ethyl acetate and anhydrous sodium sulfate was adopted as a pre-cleanup, [3][4][5][6][7][8] the auto-cleanup system combining GPC and mini-column SPE was developed. The large-molecular-size contaminants such as lipids were removed by GPC.…”

Section: )mentioning

confidence: 99%

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Development and diffusion of a systematic method for determining multiple pesticide residues in agricultural products

Ueno

2015

J. Pestic. Sci.

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In Japan, the Positive List System for the regulation of agricultural chemical residues in foods has been in force since May 29, 2006. Moreover, food poisoning caused by methamidophos-laced frozen gyōza dumplings came to light on Jan. 30, 2008. The news has set off alarms about the safety of not only perishables but also unexpected pesticides in processed foods. Therefore, a reliable systematic method was developed for determining pesticide residues in various foods. Firstly, ca. 200 target pesticides were selected by statistically analyzing the monitoring data in Aichi Prefecture. Secondly, a systematic method using plural separation and detection systems combining GC-MS/MS and LC-MS/MS as first priority was constructed. As the sample preparation method corresponding to the systematic method, a simple and easy acetonitrile extraction method, an auto-cleanup system combining GPC and mini-column SPE were developed. Thirdly, a new official multi-residue method that is able to determine a wide range of pesticides in various foods including fatty processed foods was developed. And finally, a comprehensive chromatographic detection system by dual-column GC-MS(/MS) and an interactive database without the use of pesticide standards was commercialized.

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Section: Development Of the Systematic Multi-residue Methodsmentioning

confidence: 99%

Section: )mentioning

confidence: 99%

Development and diffusion of a systematic method for determining multiple pesticide residues in agricultural products

Ueno

2015

J. Pestic. Sci.

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“…ESI electrospray ionization -Scheduled MRM LC-MS/MS 31,34,35 MS/MS 1 EI-SIM/Scan GC-MS 13 NCI negative chemical ionization -SIM/Scan GC-MS 23 GC-ECD/ECD 7,15,16 FPD ame photometric detector NPD nitrogen phosphorus detector GC-FPD/NPD 8 10,16 PDA photodiode-array detector ESI-SIM/Scan LC-PDA/MS 17,19 N- solid-phase extraction, SPE 7 12 gel permeation chromatography, GPC GPC -Nprimary secondary amine, PSA GPC-SPE Fig. 4 13, 17,23 GC-MS /MS Fig.…”

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Development and diffusion of a systematic method for determination of multiple pesticide residues in agricultural products

Ueno

2015

Jpn. J. Pestic. Sci.

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“…̮῏̮̯̯ῌ ῢQ9) ΰ̲QῦQ´ΏQQ̲ῐ Q̮̯QQ`Qῧ῭Q̮̯῍3.2 GPC ̯̯ῌ ῢQ 9) ΰ̲QῦῒQΐΏ̱῝Q῝ῧ LC-10 ῧ῭ῦ̮QΌQῒQΐ῝ῧ̳Q̱Q̳ CLNpak EV-2000 (20 mm i.d.300 mm) QῩῴῐ ̱Q̳ CLNpak EV-G (20 mm i.d.100 mm) ῧ`῝̯̰ῧQ̮̯῍ 3.3 GC ̯̯ GC-NPD/FPD: Hewlett Packard Q῝ 5890 II ῒ̱ῐ ῺQ̳Q 7673 ̳ΐῌ ῾QῲQ̱Q̳ ῌJ & W Scientific Q῝ DB-5 ms (0.32 mm i.d.30 m), QQ 0.5 mm ῒRestek Q῝ Silcosteel ῌ ῼ̱̲̳ NPDΐ ῍J & W Scientific Q῝ DB-1701P (0.32 mm i.d.30 m), QQ 0.25 mm ῒFPD, S Qῐ ΐῌ Restek Q῝ Siltek TM ῴῐ ̱Q ̳ (0.53 mm i.d.2 m), Restek Q῝ Siltek TM Y Ό ῶ ̲ῐQῩῳQῺῐ (4 mm i.d., ̲ῐ ῐQῌ Siltek TM…”

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Multiresidue Analysis of Nitrogen-containing and Sulfur-containing Pesticides in Agricultural Products Using Dual-column GC-NPD/FPD.

Ueno¹,

Oshima²,

Saito³

et al. 2002

Journal of the Food Hygienics Society of Japan

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We investigated simultaneous analytical methods for pesticide residues in large numbers of agricultural products samples. Extraction of each sample with acetonitrile was followed by a salting-out step using a graduated cylinder. The test solution was cleaned up with gel permeation chromatography (GPC), which separated the pesticide eluate into 2 fractions, and then with a tandem mini-column. Analysis was done with a dual-column GC equipped with a dual NPD and FPD (S mode) detector. Use of the Siltek TM -deactivated liner, guard column, and Y connector, and Silcosteel ῌ -treated NPD jet was e#ective for preventing the breakdown of sulfur-containing pesticides.Recoveries of 87 nitrogen-containing and sulfur-containing pesticides from fortified spinach, tomato, apple, strawberry and brown rice, ranged from 71 to 127 with RSD values of 1ῑ24, except for recoveries of aldicarb, amitraz, ethiofencarb, imazalil, propamocarb and triflumizole. Detection limits of pesticides were very good (0.3ῑ5 ppb (NPD) and 2ῑ20 ppb (FPD)) for routine analysis of pesticide residues in foods.Surveillance of pesticides in agricultural products was carried out by using the present method. From 22 out of 33 samples, 21 pesticides (43 in total) were detected. The results indicated that the present method can be applied as an e$cient and reliable means for monitoring pesticide residues in agricultural products.

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Multiresidue Analysis of Pesticides in Foods Using Acetonitrile Extraction, Gel Permeation Chromatography and Mini-column Cleanup, and Dual-column GC-ECD.

Cited by 17 publications

References 12 publications

Development and diffusion of a systematic method for determining multiple pesticide residues in agricultural products

Development and diffusion of a systematic method for determining multiple pesticide residues in agricultural products

Development and diffusion of a systematic method for determination of multiple pesticide residues in agricultural products

Multiresidue Analysis of Nitrogen-containing and Sulfur-containing Pesticides in Agricultural Products Using Dual-column GC-NPD/FPD.

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