Abstract :

The thin layer chromatography gas chromatography ECD detector was employed to evaluate soil samples and wheat stalks collected during the spring season for the presence of chlorine organic pesticides, namely DDT, DDE, DDD, HCH alpha, and gamma isomers. The study revealed that the uppermost concentration of pesticides is constrained within the depth interval of 0–10(20) cm, with their infiltration extending to a depth of 2.0–2.5 m. The initial investigation focused on examining the dynamics and movement of OCP, including substances such as DDT, DDD, DDE, alpha HCH, and gamma HCH, throughout the Syrdarya region. This page provides an overview of organochlorine pesticides, their residual presence, their application in agricultural regions, and the constituent makeup of wheat stalks. In April 2023, a collection of samples was obtained from several districts within the Syrdarya region. Subsequently, a comprehensive analysis was conducted on a total of 15 samples. The gas chromatography technique with an electron capture detector (GC/ECD) was employed for the investigation of organic chlorine insecticides. The isolation and quantification of organic chlorine insecticides with low to medium polarity were achieved using a capillary column.

---

Keywords :

beta and gamma isomers soil sample, Boyovut, DDD, DDE, DDT, ECD detector, gas chromatography technique., Gulistan, HCH alpha, Mirzaabad, organochlorine pesticides (OCP), soil samples, Syrdarya region

---

References :

1. National report on the state of the environment and the use of natural resources in the Republic of Uzbekistan (retrospective analysis for 1988-2007). T.: 2008. p. 54–55.
2. Depredelenie ostatkov pesticidesidov v selskohozyyastvennyx produktax thinkosloynym metodom i metodom GX–MS. Jumabaeva I.M., Djuraev T.A., Kushiev Kh.Kh. Nauuchnyi Vestnik Namanganskogo №2, str. 84–85.
3. Determination of some chlorinated organic pollutants in plants and soil samples from Kosovo. Vlora Gashi, BakirKelmendi, NexhdetShala, Ismaij Caca, Orinda Gashi and Valmire Havolli Vol. 12 | No. 3 |1540–1546| July–September 2019 ISSN: 0974-1496 | e–ISSN: 0976–0083 | CODEN: RJCABP, Rasayan. J. Chem.
4. Monitoring of pesticides in the environment and production: environmental toxicological and analytical aspects. M.I. Lunyov
5. Zashchita pestitsidov and agrophytocenozov. M.I. Lunyov M.: Kolos, 1992. 269 p.
6. Ivanova A.S. 2001, X 3, p. 42–50.
7. Juykova, T.V. Ecological toxicology: teacher and practical for bachelor’s and master’s degree / T.V. Zhuykova, V.S. Bezel. – Moscow: Izdatelstvo Yurayt, 2018. – 362 p.
8. Vasiliev, V.P. Okhrana okrujayushchey sredy pri spolzovanii pesticidesidov / V.P. Vasilev. – Kiev, 1983. – 127 p.
9. Riskieva, Kh.T. Zagryaznenie pochv i voz¬niknovenie chronicheskikh zabolevaniy nasele¬niya / Kh.T. Riskieva, M.A. Nasedzhanov // Po¬chvovedenie i agrokhimiya v XXI veke: materialy Mejdunarodnoy nauchno-prakticheskoy konferentsii. – Tashkent, 2003. – p. 354–363.