title: Determination and dynamics of ethylicin residues in cotton-field ecosystem.
abstract: In this work, we developed an efficient method to determine the ethylicin content in soil, cotton plant and cotton seed, and we also studied the fate of ethylicin in the cotton field ecosystem. The residual ethylicin was analyzed by GC-ECD. The limit of quantification was 0.005 mg/kg for soil, 0.01 mg/kg for the plant and cotton seed. The kinetics study of ethylicin residue showed that the ethylicin concentration in plant and soil can be regressively quantified as C = 1.0762e(-0.2529t) and C = 0.5535e(-0.1333t), representing a half-live of 2.7 and 5.2 days, respectively. As a conclusion, a dosage of 354 g a.i. ha(-1) was recommended, which could be considered as safe to human beings and animals.
authors.affiliation: Central Laboratory of Shandong Academy of Agricultural Science, Shandong Key Laboratory of Testing Technology for Food Quality and Security, No. 202 Gongye North Road, Jinan 250100, China.
authors.forename: Zilei
authors.initials: Z
authors.lastname: Chen
authors.forename: Hong
authors.initials: H
authors.lastname: Zhang
authors.forename: Ruiyan
authors.initials: R
authors.lastname: Ding
authors.forename: Wenzheng
authors.initials: W
authors.lastname: Wang
authors.forename: Wenbo
authors.initials: W
authors.lastname: Wang
authors.forename: Huidong
authors.initials: H
authors.lastname: Li
mesh_terms: D017753:Ecosystem; D004784:Environmental Monitoring; D005659:Fungicides, Industrial / Q000032:analysis*; D003368:Gossypium; D010573:Pesticide Residues / Q000032:analysis*; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis*; D013441:Sulfinic Acids / Q000032:analysis*
chemical_list: D005659:Fungicides, Industrial; D010573:Pesticide Residues; D012987:Soil; D012989:Soil Pollutants; D013441:Sulfinic Acids; C578025:ethylicin