喷雾荧光示踪剂回收率影响因素实验

Analysis on the Recovery Rate of Spraying of Fluorescent Tracers

荧光剂作为喷雾实验常用的示踪剂,其回收率对实验结果的准确性至关重要。设计了荧光示踪剂回收率影响因素的实验方案,用若丹明WT和荧光素钠作为荧光示踪剂,分别在不同稀释液和洗取液、气象条件、遮盖率、采样时间和沉积载体上测试荧光示踪剂回收率的变化情况。结果表明,在单因素试验中,其他条件相同的情况下,若丹明WT在典型阴天的回收率较高;荧光示踪剂回收率随遮盖率增加而增加;随采样时间增加而降低;滤纸更适宜作为沉积载体。

The fluorescent is usually used as tracers for spraying deposit analysis in pesticide application study.The recovery rate of the tracers is significant for a reasonable explanation of the spraying performance.Experimental scheme was designed in this work and fluorescent was used as tracers.The scheme comprised of a few spraying factors and different environmental conditions.Rhodamine WT and fluorescein sodium were used for the recovery rate tests and weather condition,shading rate,sampling times and sampler feathers were considered as constraints.The experiments shown,on the condition of the same shading rate,sampling times and samplers,recovery rate of Rohdamine WT was higher than fluorescein sodium.If sampling time was fixed with the same deposition carrier,the increase of shading rate would increase the recovery rate of fluorescent tracer.If shading rate and deposition carriers were kept same,the increase of sampling time would decrease the recovery rate of fluorescent tracers.On the condition of the same shading rate and sampling time,filter papers were more suitable deposition carrier comparing to silver papers.