Determination of Dymron in Agricultural Products by HPLC

Kobayashi, Masaru; Nagayama, Toshihiro; Hashimoto, Tsuneo; Haneishi, Nahoko; Ito, Masako; Tamura, Yasuhiro; Takada, Chieko; Yasuda, Kazuo

doi:10.3358/shokueishi.40.3_233

Cited by 3 publications

(1 citation statement)

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“…The mobile phase (1.2 mL min −1 ) was composed of methanol and water (65 : 35, v/v). The analysis of dymron was conducted according to the method of Kobayashi et al (1999b), with a minor modification. The amount of dymron was determined by using HPLC (Shimadzu LC‐10AS) equipped with an Inertsil ODS‐2 analytical column (250 × 4.6 mm), a Shimadzu UV spectrometric detector operating at 242 nm, and a chromatocorder.…”

Section: Methodsmentioning

confidence: 99%

Differential safening activity of dymron and fenclorim on pretilachlor injury in rice seedlings in soil

Miyauchi¹,

Kobayashi

Usui

2002

Weed Biology and Management

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The safening activity of dymron [1‐(α,α‐dimethylbenzyl)‐3‐(p‐tolyl)urea] and fenclorim [4,6‐dichloro‐2‐phenylpyrimidine] on the phytotoxic activity of pretilachlor [2‐chloro‐2′,6′‐diethyl‐N‐(2‐propoxyethyl)acetanilide] on rice seedlings was examined in both water and soil culture. The safening activity of fenclorim in water culture was greater than that of dymron, whereas the activity of fenclorim in soil was lower than that of dymron. The fenclorim concentration in soil water was lower than that of dymron at all times when determined after the application at the same concentrations. The phytotoxic activity of pretilachlor and the safening activities of dymron and fenclorim were well correlated with the concentration of each in soil water but not with the amount in total soil. The adsorption of fenclorim on soil solids was greater than those of dymron and pretilachlor. It was suggested that both the phytotoxic activity of pretilachlor and the safening activities of dymron and fenclorim were dependent on their concentrations in soil water, which were primarily dominated by the adsorption on soil.

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Section: Methodsmentioning

confidence: 99%

Differential safening activity of dymron and fenclorim on pretilachlor injury in rice seedlings in soil

Miyauchi¹,

Kobayashi

Usui

2002

Weed Biology and Management

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Analysis of dymron in river-water samples using LC/sonic spray ionization MS.

2001

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Determination of Seventeen Pesticide Residues in Agricultural Products by LC/MS.

Okihashi¹,

Kitagawa²,

Akutsu³

et al. 2002

Journal of the Food Hygienics Society of Japan

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Residues of 17 pesticides in agricultural products were determined by LC/MS with an atmospheric pressure chemical ionization (APCI) interface in both positive and negative ion modes. Pesticides were extracted with acetonitrile, and the extracts were cleaned-up with a primary and secondary amine (PSA) mini-column eluted with acetoneῌhexane (1 : 1). Rice, orange and potato were spiked with the 17 pesticides at 0.1 mg/g and analyzed by the proposed method. The average recoveries of these pesticides usually ranged from 70 to 98ῌ and the relative standard deviations were usually around 10ῌ. These results suggested that LC/MS with APCI could be used to determine the residue levels of the 17 pesticides in these crops.

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Determination of Dymron in Agricultural Products by HPLC

Cited by 3 publications

References 0 publications

Differential safening activity of dymron and fenclorim on pretilachlor injury in rice seedlings in soil

Differential safening activity of dymron and fenclorim on pretilachlor injury in rice seedlings in soil

Analysis of dymron in river-water samples using LC/sonic spray ionization MS.

Determination of Seventeen Pesticide Residues in Agricultural Products by LC/MS.

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