Simultaneous determination of 7 kinds of pyrethroids in agricultural products by capillary ECD-GC.

Simultaneous determination of procymidone, pyridaben and beta-cypermethrin residues in tea solution by GC-ECD.

A sensitive and effective method for the simultaneous quantitative determination of procymidone, pyridaben and beta-cypermethrin residues in tea solutions was developed and validated using a gas chromatograph (GC) equipped with an electron capture detector (ECD). The analysis of the three pesticides in tea solutions involved extraction with petroleum ether-ethyl acetate (3:1, v/v), cleanup usin...

Simultaneous Analysis of Seven Non-authorized Pesticides Residue in Cucumber Using Spiked Calibration Curve by GC/ECD

Background: Lack of farmers’ knowledge, illegal production and import, and economical situation are the main reasons for non-authorized usage. In this study, one of the major center of cucumber cultivation at south west of Iran, Darreh shahr City in Ilam Province were studied for non-authorized pesticides usage, which health authorities and national standard organization do not recommend....

Determination of Multiclass Pesticides in Dry Herbs Using GC-ECD

[Determination of diphenyl and o-phenylphenol in agricultural products by GC/MS].

A simple determination method of diphenyl (DP) and o-phenylphenol (OPP) in agricultural products by GC/MS was examined. DP and OPP were extracted with ethyl acetate in the presence of anh. sodium sulfate. After addition of n-butanol, the extract solution was concentrated. Clean-up was achieved by shaking with graphitized bulk carbon (Supelclean ENVI-Carb). Addition of polyethylene glycol sharpe...

Development and Validation of a GC/MS Method for Simultaneous Determination of 7 Monoterpens in Two Commercial Pharmaceutical Dosage Forms

Terpenes are active constituents of many pharmaceutical dosage forms with naturalproducts origin. One of the challenges in developing dosage forms with herbal originis their standardization as pharmaceutical products. GC-Mass is the most decisive andreliable technique to fulfill the requirements in this regard. In the present study, a reliable,rapid, and accurate method was developed for determ...