Related Experiment Video
Updated: Mar 29, 2026
GC-based Detection of Aldononitrile Acetate Derivatized Glucosamine and Muramic Acid for Microbial Residue Determination in Soil
Published on: May 19, 2012
Determination of metrafenone in bitter gourd and soil by GC with ECD
Siwei Wang1, Yanping Liu1, Haibin Sun1
1Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Guangzhou 510640, PR China.
Abstract:
A method for determination of metrafenone residues in bitter gourd and soil was developed. All samples were extracted with ethyl acetate, purified with the glass column of florisil and NH2-SPE column, analyzed by gas chromatography with electronic capture detector (GC-ECD). The results showed that it had good linearity in the range of 0.01-2 mg/L and the correlation coefficient (r) was 0.9999. The average recoveries of metrafenone in bitter gourd and soil were 83.51-91.75% and 84.76-91.72% with the relative standard deviation of 3.48-9.18% and 4.23-7.25%, respectively. The limit of detection was estimated to be 0.005 mg/kg, the minimum concentration of detection in bitter gourd and soil was 1 × 10(-2) mg/kg.
Related Concept Videos
01:19Gas Chromatography: Types of Detectors-II
01:14Gas Chromatography–Mass Spectrometry (GC–MS)
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall....
01:13Gas Chromatography: Overview of Detectors
A non-destructive detector allows a sample to be analyzed without altering or consuming it, meaning the sample can be collected after detection for further analysis. Examples include thermal conductivity detectors and...
01:21Gas Chromatography: Types of Detectors-I
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...