Studies on Rapid Multi-Residue Analysis of Pesticides in Agricultural Products by LC-MS/MS

Iwakoshi, Keiko; Tamura, Yasuhiro; Otsuka, Kenji; Tomizawa, Sanae; Yamaki, Yumiko; Masubuchi, Tamako; Nakagawa, Yukiko; Masuda, Ryoko; Sato, Chizuko; Sasamoto, Takeo; Takano, Ichiro

doi:10.3358/shokueishi.55.254

Cited by 8 publications

(3 citation statements)

References 9 publications

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“…PSA is reported to have significant retention of organic acids, including fatty acids and some sugars, whereas C 18 is often helpful to retain lipophilic materials, such as sterols. , Independent of straw sample composition, the different results may be due to the use of 0.1% formic acid for rice but not for wheat during extraction. The mechanism of PSA involves weak anion exchange, which in the case of fatty acids entails interaction of their carboxylic acid groups with the amines on the sorbent.…”

Section: Resultsmentioning

confidence: 99%

Multiresidue Analysis of Pesticides in Straw Roughage by Liquid Chromatography–Tandem Mass Spectrometry

Zhang

Feng

Zhu

et al. 2016

J. Agric. Food Chem.

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A multiresidue analytical method using a modification of the "quick, easy, cheap, effective, rugged, and safe" (QuEChERS) sample preparation approach combined with liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis was established and validated for the rapid determination of 69 pesticides at different levels (1-100 ng/g) in wheat and rice straws. In the quantitative analysis, the recoveries ranged from 70 to 120%, and consistent RSDs ≤ 20% were achieved for most of the target analytes (53 pesticides in wheat straw and 58 in rice straw). Almost all of the analytes achieved good linearity with R(2) > 0.98, and the limit of validation levels (LVLs) for diverse pesticides ranged from 1 to 10 ng/g. Different extraction and cleanup conditions were evaluated in both types of straw, leading to different options. The use of 0.1% formic acid or not in extraction with acetonitrile yielded similar final outcomes, but led to the use of a different sorbent in dispersive solid-phase extraction. Both options are efficient and useful for the multiresidue analysis of targeted pesticides in wheat and rice straw samples.

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Section: Resultsmentioning

confidence: 99%

Multiresidue Analysis of Pesticides in Straw Roughage by Liquid Chromatography–Tandem Mass Spectrometry

Zhang

Feng

Zhu

et al. 2016

J. Agric. Food Chem.

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“…Analysis was performed using LC-MS/MS instrumentation consisting of a Triple Quad 5500 (SCIEX, Framingham, USA) and Acquity UPLC series (Waters Corp., Milford, USA). The LC and MS conditions were those used in our routine laboratory tests, basically as described in the previous study 7) (Table 1).…”

Section: Lc-ms/ms Conditionsmentioning

confidence: 99%

“…Sample preparation followed our routine procedure, as described previously. 7) Briefly, 10 g of each sample was placed in a 100 mL polypropylene centrifuge tube and 30 mL of acetonitrile was added. The sample was homogenized thoroughly for 1 min, then the reagents were added: 4 g of anhydrous magnesium sulfate, 1 g of trisodium citrate, 0.5 g of disodium hydrogen citrate and 1 g of sodium chloride.…”

Section: Sample Preparationmentioning

confidence: 99%

Surveillance of Chlorantraniliprole Residues in Vegetables and Fruits Using LC-MS/MS

Nakajima

Otsuka

Tomizawa

et al. 2018

Journal of the Food Hygienics Society of Japan

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We measured the residual amounts of chlorantraniliprole in various vegetables and fruits. Sample solutions were prepared according to our routine procedure based on the QuEChERS method and analyzed by LC-MS/MS. Performance characteristics were evaluated for 8 kinds of food samples by means of recovery tests of 5 replicates at the concentration of 10 ng/g. Recoveries and RSDs ( ) ranged from 50.2 to 93.4 and from 2.1 to 9.7 , respectively. Application of this method to survey 207 vegetables and 163 fruits gave detection rates of 8.2 and 1.2 , respectively. In vegetables, detection rates were high in okra (4 out of 10 samples), paprika (4 out of 23 samples) and tomato (2 out of 6 samples), and leaf vegetables such as lettuce, mizuna, spinach and wrinkled greens also contained high concentrations of chlorantraniliprole. The highest residual concentration was 571 ng/g in mizuna. The samples containing chlorantraniliprole seemed to be mainly from Asian countries, including samples of domestic Japanese origin. However, none of them contained more than the MRL, which suggests that the use of chlorantraniliprole has been properly controlled.

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LC-MS/MS method optimization and validation for trace-level analysis of 71 crop protection chemicals in pulses

Banerjee

Gupta

Singh

et al. 2019

Environ Monit Assess

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Studies on Rapid Multi-Residue Analysis of Pesticides in Agricultural Products by LC-MS/MS

Cited by 8 publications

References 9 publications

Multiresidue Analysis of Pesticides in Straw Roughage by Liquid Chromatography–Tandem Mass Spectrometry

Multiresidue Analysis of Pesticides in Straw Roughage by Liquid Chromatography–Tandem Mass Spectrometry

Surveillance of Chlorantraniliprole Residues in Vegetables and Fruits Using LC-MS/MS

LC-MS/MS method optimization and validation for trace-level analysis of 71 crop protection chemicals in pulses

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