Tedion (tetradifon)
Zweig, G; Sherma, J
| HERO ID | 2075645 |
|---|---|
| Year | 1972 |
| Title | Tedion (tetradifon) |
| Authors | Zweig, G; Sherma, J |
| Volume | VI |
| Page Numbers | Analytical methods for pesticides and plant growth regulators |
| Abstract | PESTAB. Residues of Tedion (tetradifon) and Thiodan (endosulfan) are extracted from vegetables with alcohol-hexane and are cleaned up by ethyl ether-petroleum ether elution on a Florisil column. Additional cleanup on carbon is required when waxy vegetbles are being analyzed. Fractional elution from the Florisil column separates Thiodan from DDT, which has a conflicting retention time on gas chromatography. Analysis is on an instrument equipped with a silver electrode halogen microcoulometric titration cell, a 1 mV recorder, a disk integrator, and a 6 ft X 1/4 in. o.d. aluminum column packed with 15-20% w/w Dow Corning high vacuum silicone grease or DC-200 fluid on 30-60 mesh acid-washed Chromosorb P. The column temperature is 230DEG C, the injection block temperature is 250DEG C, the nitrogen carrier gas flow rate is 120 ml/min, and the sensitivity range is 128. Recoveries of Thiodan (1-2 ppm) and Tedion (2 ppm) from broccoli were 78-95% (mean 87%) and 95-102% (mean 97%) respectively. |
| Report Number | PESTAB/75/2806 |
| Is Certified Translation | No |
| Dupe Override | 2075645 |
| Comments | Journal: IN ISSN: |
| Is Public | Yes |