Angioni A, Schirra M, Garau V L, Melis M, Tuberoso C I G, Cabras P
Dipartimento di Tossicologia, Università di Cagliari, via Ospedale 72, I-09124 Cagliari, Italy.
Food Addit Contam. 2004 Nov;21(11):1065-70. doi: 10.1080/02652030400010066.
Residues of the pesticides azoxystrobin, fenhexamid and pyrimethanil were determined in strawberry after field treatment. The effect of 'home' washing with tap water and a commercially available vegetable detergent on residue levels was also studied. After treatment, azoxystrobin and pyrimethanil residues on strawberry were on average 0.55 and 2.98 mg kg(-1), respectively, values below the maximum residue level (MRL) fixed by the European Union (2.0 and 5 mg kg(-1), respectively), while fenhexamid residues were on average 2.99 mg kg(-1), which is very close to the MRL of 3.0 mg kg(-1), but some samples were over the MRL. Thereafter, all residues declined, with a half-life of about 8 days (azoxystrobin and fenhexamid) and 4.8 days (pyrimethanil). Washing the fruit with tap water reduced the residues of azoxystrobin and fenhexamid but did not affect pyrimethanil residues. Finally, when fruits were washed with a commercial detergent, greater amounts were removed (about 45% of azoxystrobin and pyrimethanil and 60% of fenhexamid).
在田间处理后，测定了草莓中农药嘧菌酯、二甲嘧酚和嘧霉胺的残留量。还研究了用自来水和市售蔬菜洗涤剂进行“家庭”清洗对残留量的影响。处理后，草莓上嘧菌酯和嘧霉胺的残留量平均分别为0.55和2.98毫克/千克，低于欧盟规定的最大残留限量（MRL）（分别为2.0和5毫克/千克），而二甲嘧酚残留量平均为2.99毫克/千克，非常接近3.0毫克/千克的MRL，但一些样品超过了MRL。此后，所有残留量均下降，嘧菌酯和二甲嘧酚的半衰期约为8天，嘧霉胺的半衰期为4.8天。用自来水清洗水果可降低嘧菌酯和二甲嘧酚的残留量，但不影响嘧霉胺的残留量。最后，当用市售洗涤剂清洗水果时，去除的量更多（嘧菌酯和嘧霉胺约45%，二甲嘧酚60%）。
