Baltoo Muskan, Banshtu Tanuja, Katna Sapna, Sharma Ajay, Sharma Sakshi, Bakshi Arzoo, Thakur Siddhant
Department of Entomology, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan, Himachal Pradesh, 173230, India.
Department of Entomology, Punjab Agricultural University, Ludhiana, India.
Environ Geochem Health. 2025 Apr 9;47(5):159. doi: 10.1007/s10653-025-02466-0.
A field experiment was conducted to evaluate the persistence of emamectin benzoate 1.50% + fipronil 3.50% SC at recommended and 1.25 times the recommended doses on green, red chilli fruits and soil. QuEChERS method was validated for reliable and effective analysis of residues in green, red chilli fruits and soil matrices. Limit of quantification (LOQ) for emamectin benzoate and fipronil on chilli was 0.01 mg kg and 0.002 mg kg, respectively. Initial deposits of emamectin benzoate and fipronil on green chilli at X dose were 0.261 and 0.321 mg kg, respectively and at 1.25X dose residues were 0.319 and 0.394 mg kg, respectively. Whereas, initial deposits of emamectin benzoate and fipronil on chilli cropped soil at X dose were 0.015 and 0.143 mg kg, respectively and at 1.25 X dose were 0.260 and 0.171 mg kg, respectively. In red chilli fruits, the residues of both the test insecticides were found < LOQ at final harvest at both the doses. Safe waiting periods of 5.26 and 9.06 days for emamectin benzoate and fipronil as combi-product was suggested at X and 1.25 X dose, respectively. The half-lives for test combi-product ranged between 1.26 and 1.71 days. Dietary risk assessment revealed that Theoretical Maximum Daily Intake (TMDI) was < Maximum Permissible Intake (MPI), while Hazard Quotient (HQ) was < 1, thus indicating the combi-product to be safe for consumption. Treating chilli fruits with lukewarm water + 5% NaHCO solution for 10 min removed maximum residues (63.82%) and proved as a good house hold practice.
进行了一项田间试验，以评估1.50%甲氨基阿维菌素苯甲酸盐+3.50%氟虫腈悬浮剂在推荐剂量和1.25倍推荐剂量下在青椒、红椒果实及土壤中的持效性。验证了QuEChERS方法用于可靠、有效地分析青椒、红椒果实及土壤基质中的残留。甲氨基阿维菌素苯甲酸盐和氟虫腈在辣椒上的定量限分别为0.01 mg/kg和0.002 mg/kg。在X剂量下，甲氨基阿维菌素苯甲酸盐和氟虫腈在青椒上的初始沉积量分别为0.261 mg/kg和0.321 mg/kg，在1.25X剂量下残留量分别为0.319 mg/kg和0.394 mg/kg。而在X剂量下，甲氨基阿维菌素苯甲酸盐和氟虫腈在种植辣椒的土壤上的初始沉积量分别为0.015 mg/kg和0.143 mg/kg，在1.25X剂量下分别为0.260 mg/kg和0.171 mg/kg。在红椒果实中，两种测试杀虫剂在两个剂量下最终收获时的残留量均低于定量限。对于甲氨基阿维菌素苯甲酸盐和氟虫腈组合产品，在X剂量和1.25X剂量下分别建议的安全等待期为5.26天和9.06天。测试组合产品的半衰期在1.26至1.71天之间。膳食风险评估显示，理论最大日摄入量（TMDI）低于最大允许摄入量（MPI），而风险商数（HQ）小于1，因此表明该组合产品食用安全。用温水+5%碳酸氢钠溶液处理辣椒果实10分钟可去除最大残留量（63.82%），证明这是一种良好的家庭做法。
