Dissipation of captan in soil and tomato plants in field conditions
Yükleniyor...
Dosyalar
Tarih
2008
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Pisa Univ Press
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Residues of captan in tomato plant and soil conditions were investigated. Nonsystemic phthalimide fungicide, captan was applied in pre-emergence at 1.5. 3 and 6 kg ha(-1). Soil and plant samples were collected at 4 h I day and 30 days after the application and analyzed for captan residues. A gas chromatographic method using aceytone, dichioromethane and petroleum ether as extraction solvents, was used to analyse residual captan. Captan residues were determined by gas chromatography-electron capture detection (GC-ECD), using an activated silica gel capillary column. The recovery of captan in soil and tomato was 83.7%. 84.4%, respectively. The concentration levels of captan residues in tomato field samples at the recommended preharvest interval were below the EU Codex and Turkish Food Codex established MRL values. The results showed that captan dissipation in soil and tomato coincided with C = 4.1628 e(-0.8959t), C = 2.0874 e(-0.4993t), the DT50 were about 2.1 and 2.6 d, respectively. The dissipation rate of captan in soil was faster than that of in tomato.
Açıklama
Anahtar Kelimeler
Gas-Chromatography, Organic-Matter, Extraction, Organochlorine, Degradation, Pesticides, Adsorption, Residues, Grapes
Kaynak
Agrochimica
WoS Q Değeri
Q4
Scopus Q Değeri
Q4
Cilt
52
Sayı
5
