Determination of tris(2-chloroethyl) phosphate in leachates from landfills by capillary gas chromatography using flame photometric detection

1994 ◽  
Vol 684 (2) ◽  
pp. 366-369 ◽  
Author(s):  
Akio Yasuhara
Keyword(s):  
Gas Chromatography ◽  
Capillary Gas Chromatography ◽  
Photometric Detection ◽  
Flame Photometric Detection

scholarly journals Development of Methods for Determination of the Residues of 15 Pesticides in Medicinal Herbs Isatis indigotica Fort. by Capillary Gas Chromatography with Electron Capture or Flame Photometric Detection

2005 ◽  
Vol 88 (3) ◽  
pp. 720-728 ◽  
Author(s):  
Feng Tang ◽  
Yongde Yue ◽  
Rimao Hua ◽  
Shimei Ge ◽  
Jie Tang
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Pesticide Residues ◽  
Capillary Gas Chromatography ◽  
Medicinal Herbs ◽  
Raw Material ◽  
Isatis Indigotica ◽  
Photometric Detection ◽  
Flame Photometric Detection

Abstract Two multiresidue methods were developed for the determination of 15 pesticides (organochlorines, organphosphorus compounds, pyrethroids, and fungicides) in medicinal herbs Isatis indigotica Fort. and its formulations. The analytical procedure is based on ultrasonic assisted extraction and liquid-liquid extraction (LLE). After solvents were added, the raw material or granule sample was sonicated in an ultrasonic water bath and then centrifuged, filtered, and cleaned up by LLE. The infusion sample was extracted with petroleum ether by LLE. The pesticide residues were determined by capillary gas chromatography with electron-capture or flame photometric detection. Recoveries with the method at concentrations between 0.4 μg/kg and 10 μg/kg ranged from 70.2 to 119.5% for raw material, 73.2 to 105.1% for granule formulation, and 72.8 to 113.3% for infusion formulation. The relative standard deviation values were <20% for all of the pesticides studied. The pesticide detection limits were within the ranges 0.3–0.5 μg/L for endosulfan, 3–7.5 μg/L for pyrethroids, 0.7–32.5 μg/L for organophosphorus pesticides, and 0.1–0.6 μg/L for the other pesticides. The proposed methods are simple and rapid and provide simultaneous determination of pesticide residues in Isatis indigotica Fort. with acceptable recoveries and repeatability and an adequate limit of determination.

Determination of dibutyltin compounds in soft polyurethane foam by gas chromatography with flame photometric detection

The Analyst ◽  
1998 ◽  
Vol 123 (5) ◽  
pp. 1091-1094
Author(s):  
Makoto Nagase ◽  
Mineki Toba ◽  
Hiroyuki Kondo ◽  
Kiyoshi Hasebe
Keyword(s):  
Gas Chromatography ◽  
Polyurethane Foam ◽  
Photometric Detection ◽  
Flame Photometric Detection
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