Saha Soumen, Mondal Rahul, Mukherjee Subhadeep, Sarkar Mitali, Kole Ramen Kumar
Department of Chemistry, University of Kalyani, Kalyani, Nadia, West Bengal, 741235, India.
Department of Agricultural Chemicals, Faculty of Agriculture, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, Nadia, West Bengal, 741252, India.
Environ Monit Assess. 2017 Apr;189(4):150. doi: 10.1007/s10661-017-5871-0. Epub 2017 Mar 9.
Acetamiprid insecticide has been widely used to control paddy insects. In order to find out the dissipation of acetamiprid residues in paddy (variety: Satabdi), field studies were conducted in Nadia, West Bengal. Acetamiprid (20% SP) was applied twice at 10 g (T), 20 g (T) and 40 g (T) a.i. ha with three replications along with untreated control (T). Residue analysis of acetamiprid in paddy (leaf, grain, husk and straw) and soil was conducted utilizing high-pressure liquid chromatograph (HPLC) with UV detector at LOQ of 0.05 mg kg. The recoveries of acetamiprid from fortified paddy sample were obtained in the range of 81.8 to 93.1% (for leaf, grain, husk and straw), and for soil, it was 87.2 to 94.3% at the LOQ level and upper two levels of LOQ. The initial residue of acetamiprid (0.11-0.99 mg kg) dissipated following the first-order reaction kinetics with the half-life of 1.5 to 1.8 days in paddy leaf and 1.3 to 1.4 days in soil. In harvested samples of paddy straw, grain and soil, the residue was found below LOQ. Because of the rapid dissipation, acetamiprid may be considered to have low risk to the ecosystem. Therefore, the use of acetamiprid for plant protection in paddy may be considered safe for food and environmental health.
啶虫脒杀虫剂已被广泛用于防治稻田害虫。为了查明啶虫脒在稻田（品种：萨特巴迪）中的残留消解情况，在西孟加拉邦纳迪亚进行了田间研究。啶虫脒（20%可湿性粉剂）以10克（T）、20克（T）和40克（T）有效成分/公顷的用量进行了两次施药，设置三个重复，并设未处理对照（T）。利用配备紫外检测器的高压液相色谱仪（HPLC）对稻田（叶片、谷粒、稻壳和稻草）及土壤中的啶虫脒进行残留分析，定量限为0.05毫克/千克。在定量限水平及高于定量限的两个水平下，强化稻田样品中啶虫脒的回收率在81.8%至93.1%之间（针对叶片、谷粒、稻壳和稻草），土壤中的回收率为87.2%至94.3%。啶虫脒的初始残留量（0.11 - 0.99毫克/千克）遵循一级反应动力学进行消解，在稻田叶片中的半衰期为1.5至1.8天，在土壤中的半衰期为1.3至1.4天。在收获的稻草、谷粒和土壤样品中，残留量低于定量限。由于消解迅速，啶虫脒对生态系统的风险可能被认为较低。因此，啶虫脒用于稻田植物保护对食品和环境健康可能被认为是安全的。
