有机肥料中氯离子检测试纸的研制与应用

DEVELOPMENT AND APPLICATION OF TEST PAPER FOR DETECTING CHLORIDE ION IN ORGANIC FERTILIZER

以试纸为载体,建立有机肥料中氯离子的快速检测方法。通过选择合适的载体,优化制备条件,制作氯离子试纸;通过标准比色卡的制备,建立有机肥料中氯离子的快速检测方法;采用建立的方法对市售样品进行测试,与国家标准方法进行比较,并对样品溶液中的氯离子进行加标(20 mg·L^(-1))回收测定。采用本方法与国家标准方法对样品测定的相对误差在±20%之间,加标回收率均为100%。该方法简便、快速、准确,无须仪器辅助,可用于有机肥料中氯离子的半定量检测。

To establish a rapid detection method of chloride ion in organic fertiliser with test paper as the carrier.Chloride ion test papers were prepared by selecting a suitable carrier and optimizing the preparation conditions.The rapid detection method of chloride ion in organic fertilizer was established through the preparation of standard colorimetric card.The established method was compared with the national standard method to test the commercial samples,and the chloride ion in the sample solution was determined by standard(20 mg·L^(-1))recovery.The relative error of the results using this method and the national standard method was between±20%,and the standard recovery rate were 100%.This method is simple,fast,accurate and requires no instrument assistance.It can be used for the semi-quantitative detection of chloride ion in organic fertiliser.