All India Network Project on Pesticide Residues, Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi, 110012, India,
Environ Monit Assess. 2014 Dec;186(12):8453-61. doi: 10.1007/s10661-014-4016-y. Epub 2014 Sep 14.
Supervised field trials were conducted at four different agro-climatic locations of India to evaluate the dissipation pattern and risk assessment of spiromesifen on tomato. Spiromesifen 240 SC was sprayed on tomato at 150 and 300 g a.i. ha(-1). Samples of tomato fruits were drawn at 0, 1, 3, 5, 7, 10 and 15 days after treatment and soil at 15 days after treatment. Quantification of residues was done on gas chromatograph-mass spectrophotometer in selective ion monitoring mode in the mass range of 271-274 (m/z). The limit of quantification of the method was found to be 0.05 mg kg(-1), while the limit of determination was 0.015 mg kg(-1). Residues were found below the LOQ of 0.05 mg kg(-1) in 10 days at both the doses of application at all the locations. Spiromesifen dissipated with a half-life of 0.93-1.38 days at the recommended rate of application and 1.04-1.34 days at the double the rate of application. Residues of spiromesifen in soil were detectable level (<0.05 mg kg(-1)) after 15 days of treatment. A preharvest interval (PHI) of 1 day has been recommended on tomato on the basis of data generated under All India Network Project on Pesticide Residues. Spiromesifen 240 SC has been registered for its use on tomato by Central Insecticide Board and Registration Committee, Ministry of Agriculture, Government of India. The maximum residue limit (MRL) of spiromesifen on tomato has been fixed by Food Safety Standard Authority of India, Ministry of Health and Family Welfare, Government of India as 0.3 μg/g after its risk assessment.
在印度四个不同的农业气候区进行了田间试验，以评估螺旋霉素在番茄上的消解模式和风险评估。在番茄上以 150 和 300 g a.i./ha 的剂量喷洒 240 SC 螺旋霉素悬浮剂。施药后 0、1、3、5、7、10 和 15 天分别采集番茄果实样品，施药后 15 天采集土壤样品。采用气相色谱-质谱联用仪在选择离子监测模式下，在质量范围 271-274（m/z）进行残留量的定量分析。该方法的定量限为 0.05mg/kg，测定限为 0.015mg/kg。在所有地点的两种施药剂量下，10 天内均未检出残留量低于 0.05mg/kg 的限量。在推荐施药剂量下，螺旋霉素半衰期为 0.93-1.38 天，在双倍施药剂量下半衰期为 1.04-1.34 天。施药后 15 天，土壤中残留的螺旋霉素仍可检出（<0.05mg/kg）。根据全印农药残留网络项目获得的数据，建议番茄的休药期为 1 天。中央杀虫剂委员会和注册委员会已将 240 SC 螺旋霉素悬浮剂注册用于番茄，该委员会隶属于印度农业部门。在对其进行风险评估后，印度食品安全标准管理局将螺旋霉素在番茄上的最大残留限量（MRL）定为 0.3μg/g。
