连续流动分析仪在农业水质监测中的应用

Application of Continuous Flow Analyzer in Monitor Agricultural Water Quality

该文采用荷兰SKALAR公司SAN++型连续流动分析仪对农业水质中的总氮(TN)、总磷(TP)和氨氮(NH3-N)指标进行了检测方法的研究,并利用此方法对农业生产用水进行了测定。结果表明:该方法在检测水中的总氮、总磷和氨氮时,标准曲线相关系数r≥0.999;加标回收率分别为103.5%(TN)、98.3%(TP)、98.6%(NH3-N),相对标准偏差(RSD)分别为0.9%(TN)、1.5%(TP)、1.1%(NH3-N),用该方法对实际样品进行测定时也取得了良好的准确度和精密度。运用此方法快速、简便,而且能保证数据的可靠性,尤其适用于大批量农业水环境样品的监测。

In this paper we built a new detection method in monitor agricultural water with SAN＋＋ continuous flow analyzer （SKALAR company, Holland）, and total nitrogen（TN）, total phosphorus （TP） and ammonia （NH3-N） in agricultural water were determined by this method.The results showed that：in this method the TN,TP,NH3-N detection coefficient of correlation r≥0.999; the recovery of standard were： 103.5% （TN）, 98.3% （TP）, 98.6% （NHa- N）, the relative standard deviation （RSD） were：0.9% （TN）, 1.5% （TP）, 1.1% （NH3-N） ,and this method was accuracy and precision.The method is rapid and simple, and can ensure the reliability of data, especially suitable for large quantities of agricultural environmental water sample monitoring.