选定代表着水溶性的甲胺磷和代表着脂溶性的氰戊菊酯,在茉莉花园中以1β000倍和800倍的比例进行混合喷施,然后采摘茉莉鲜花与茶坯拼合并窨制成茉莉花茶,同时检测其农药残留量。结果表明:茉莉鲜花中的农药残留可通过花茶的窨制转移到茶叶中;对水解度较高的农药(甲胺磷)而言,茶坯含水量对农药残留的转移起着第一重要作用;对脂溶性农药(氰戊菊酯)而言,配花量对农残的转移起着第一重要作用。
:In this paper,methamidophos and fenvalerate were selected,which represent water-soluble pesticide and fat-soluble pesticide respectively, and sprayed in the proportion of 1β000 and 800 in jasmine garden. The fresh jasmine flower was pluched and processed for jasmine tea. The pesticide residue in jasmine flower and jasmine tea were determined respectively. Results indicated that the pesticide residues of the fresh jasmine flower can transfer into jasmine tea through manufacturing process. The water content of refined tea is the critical factor in the transferring of water-soluble pesticide (methamidophos), while the jasmine flower amount is the critical factor in the transferring of fat-soluble pesticide (fenvalerate).
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