秋葵果实内外的氰戊菊酯（α-氰基-间苯氧基苄基α-异丙基-对氯苯基乙酸酯）残留量

Fenvalerate (alpha-cyano-m-phenoxy-benzyl alpha-isopropyl-p-chlorophenyl acetate) residues in and on okra fruits.

作者信息

Jain R K

机构信息

Department of Microbiology, Barkatullah University, Bhopal, India.

出版信息

Sci Total Environ. 1996 Sep 9;187(3):253-5. doi: 10.1016/0048-9697(96)05074-7.

DOI:10.1016/0048-9697(96)05074-7

PMID:8711468

Abstract

Okra crop was sprayed with sumicidin 20E (Fenvalerate 20% EC) at the rate of 300 ml/ha (C1), 375 ml/ha (C2) and 500 ml/ha (C3). Residues in fruit samples were determined by gas chromatography (Hewlett Packard 5890 A) at different time intervals to establish the safe waiting period for Fenvalerate. The initial deposits of Fenvalerate on okra fruits for C1, C2 and C3 were 1.4 ppm, 2.8 ppm and 4.5 ppm, respectively. Seven days after spraying, the initial deposits of C1, C2 and C3 decreased to 0.03 ppm, 0.05 ppm and 0.67 ppm, respectively. The residue values of Fenvalerate on okra fruits 7 days after spraying were below the tolerance limit (0.2 ppm; Anonymous, 1978; FAO, 1980) for C1 and C2, but above it in the case of C3. Ten days after spraying, the residue values of C1, C2 and C3 were below the tolerance limit.

摘要

秋葵作物以300毫升/公顷（C1）、375毫升/公顷（C2）和500毫升/公顷（C3）的剂量喷施速灭杀丁20E（氰戊菊酯20%乳油）。通过气相色谱法（惠普5890 A）在不同时间间隔测定果实样本中的残留量，以确定氰戊菊酯的安全等待期。C1、C2和C3处理下，氰戊菊酯在秋葵果实上的初始沉积量分别为1.4 ppm、2.8 ppm和4.5 ppm。喷施7天后，C1、C2和C3的初始沉积量分别降至0.03 ppm、0.05 ppm和0.67 ppm。喷施7天后，C1和C2处理下秋葵果实上氰戊菊酯的残留量低于耐受限度（0.2 ppm；无名氏，1978年；粮农组织，1980年），但C3处理高于该限度。喷施10天后，C1、C2和C3的残留量均低于耐受限度。