标准编号：ISO 19746:2017
中文名称：基础肥料尿素含量测定（通过高性能液相色谱法）（HPLC）
英文名称：Determination of urea content in urea-based fertilizers by high performance liquid chromatography (HPLC)
发布日期：2017-02
标准范围
This document specifies the test procedure for determining the urea content in urea-based fertilizers, including urea, urea aldehydes [methylene urea fertilizers, isobutylene diurea (IBDU), crotonylidene diurea (CDU)], urea triazone fertilizers, urea ammonium nitrate (UAN), sulfur- and polymer-coated urea (SCU and PCU), as well as compound fertilizers containing urea. The method is based on High Performance Liquid Chromatography (HPLC).The proposed method is an extension of the AOAC Official Method 2003.14 which was collaboratively studied for the “Determination of Urea in Water-Soluble Urea-Formaldehyde Fertilizer Products and in [4] Aqueous Urea Solutions” in 2003. The method was published in the Journal of AOAC in 2004 and was granted the First Action in 2003 and the Final Action in 2008.This method also applies to the determination of biuret content in urea containing fertilizer with the [5]results published in the J. AOAC in 2014 . This method was adopted by the International Organization for Standardization (ISO) as a Committee Draft (ISO/CD 18643) in 2014, and after review and the Ring [6]Test Analyses .NOTE This HPLC method can also be utilized to analyse Crotonylidene diurea (CDU) and Isobutylidene [1]diurea (IBDU) contents within those above-mentioned fertilizers, in addition to EN 15705 .
立即下载标准文件