geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Determination of chlorpyrifos and 3 5 6 tri chloro 2 pyridinol residues in peppermint hay and peppermint oil


, : Determination of chlorpyrifos and 3 5 6 tri chloro 2 pyridinol residues in peppermint hay and peppermint oil. Journal of Agricultural & Food Chemistry 29(2): 321-323

Procedures were described for the determination of the insecticide O,O-diethyl O-(3,5,6-trichloro-2-pyridyl)phosphorothioate (chlorpyrifos) and its metabolite, 3,5,6-trichloro-2-pyridinol in mint hay and oil. After extraction, chlorpyrifos residues were cleaned up on a silica gel column and quantitated by P-specific gas chromatography. The metabolite was separated from the extraction solvent by liquid-liquid partitioning with aqueous sodium carbonate, followed by chromatography on acid alumina. The column eluate was treated with N,O-bis(trimethylsilyl)acetamide and analyzed by electron capture gas chromatography. These methods were sensitive to 0.02 ppm in hay and to 0.1 ppm for the parent compound and 0.5 ppm for the metabolite in oil. Recoveries averaged 88%.

US$29.90

PMID: 6164709


Other references

Cabrera M.C.; Munoz R.; Poncela R.; Gonzalez G.; Socorro A.R., 1997: Study of pesticide contamination in the unsaturated zone and the aquifer of Grand Canary and Tenerife, Canary Islands. Pages 211-217 1997

Schalken J.A.; Debruyne F.M.J., 1989: Gene expression in urological malignancies. Bolla, M , E M Chambaz And C Vrousos (Ed ) Colloque Inserm (Institut National De La Sante Et De La Recherche Medicale), Vol 190 Facteurs De Croissance Et Oncogenes; (Inserm (National Institute Of Health And Medical Research) Colloquium, Vol 190 Growth Factors And Oncogenes); 8th Cancer Symposium Of Grenoble, Grenoble, France, March 10-11, Xi+222p Les Editions Inserm: Paris, France Illus Paper 197-208

Chernitskii, Av, 1980: Operation of helicopters for chemical protection of plants (Analytical review). Khimiia v sel'skom khoziaistve8(9): 6-11

Shea, T.C.; Antman, K.H.; Eder, J.P.; Elias, A.; Peters, W.P.; Schryber, S.; Henner, W.D.; Schoenfeld, D.A.; Schnipper, L.E.; Frei, E., 1988: Malignant melanoma. Treatment with high-dose combination alkylating agent chemotherapy and autologous bone marrow support. Nineteen patients with metastatic malignant melanoma were treated with 20 courses of high-dose combination alkylating agent chemotherapy and autologous bone marrow support. All 20 treatment courses were evaluable for toxic reactions and 17 of 20 c...

Lachaise, F.; Meister, M.F.; Hétru, C.; Lafont, R., 1986: Studies on the biosynthesis of ecdysone by the Y-organs of Carcinus maenas. High specific activity tritiated ecdysone precursor, 2,22,25-trideoxyecdysone, was incubated with Y-organs from intermoult and premoult shore crabs. Several metabolites were identified among which ecdysone and 25-deoxyecdysone. The concomitant pro...

Minamino, N.; Kangawa, K.; Matsuo, H., 1984: Neuromedin C: a bombesin-like peptide identified in porcine spinal cord. From a side fraction obtained in our previous isolation of neuromedin B from porcine spinal cord, we have purified another decapeptide that exhibits a potent stimulant effect on the smooth muscle preparation of rat uterus. By microsequencing and s...

Fox, M.W.; Onofrio, B.M., 1997: Indications for fusion following decompression for lumbar spinal stenosis. Degenerative lumbar spinal stenosis is a common condition affecting middle-aged and elderly people. Significant controversy exists concerning the appropriate indications for fusion following decompressive surgery. The purpose of this report is to...

Allavena P.; Zanaboni F.; Rossini S.; Meredino A.; Mantovani A., 1985: Cytotoxic lymphocytes from ovarian cancer patients reactive against autologous tumor. Journal of Leukocyte Biology 38(1): 81

Schmidt, Guenter., 2001: Reversopelma petersi sp n Araneae Theraphosidae Theraphosinae, a new spider species from northwest South America Reversopelma petersi sp n Areneae Reversopelma petersi sp n Areneae Reversopelma petersi sp n Areneae Reversopelma petersi sp n Areneae Reversopelma petersi sp n Areneae Reversopelma petersi sp n Areneae Reversopelma petersi sp n Areneae Reversopelma petersi sp n Areneae Reversopelma petersi sp n Areneae Reversopelma petersi sp n Areneae. Arachnologisches Magazin. Maerz-April; 92: 1-10

Herszényi, László.; Pregun, Ián.; Tulassay, Z., 2009: Diagnosis and recognition of early esophageal neoplasia. Barrett's esophagus (BE) is the precursor lesion of esophageal adenocarcinoma, a malignancy with increasing incidence in Western countries. Malignant transformation of Barrett's metaplasia is a multistep process in which intestinal metap...