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BS ISO 18643

来源：花匠小妙招时间：2024-08-25 09:24

BS ISO 18643-2016【现行】

中文名称：

肥料和土壤改良剂. 尿素肥料中缩二脲含量的测定. 高效液相色谱法

英文名称：

Fertilizers and soil conditioners. Determination of biuret content of urea-based fertilizers. HPLC method

基本信息

发布日期：2016-03-31
实施日期：2016-03-31
发布单位：英国国家标准(BSI)
中国标准分类：B10(土壤、肥料综合)
国际标准分类：65.080(肥料)
起草单位：BSI

目录 1Scope 2Normative references 3Principle 4Reagents 4.1Acetonitrile, HPLC grade. 4.2Mobile phase, 150 ml water + 850 ml acetonitrile, filtered by 0,22 μm membrane as pre-treatment, 5Apparatus 5.1Ordinary laboratory apparatus. 5.2Ultrasonic bath. 5.3High-performance liquid chromatography instrument, with UV detector. 5.4Microsyringe, 5 μl ~ 50 μl. 5.5Syringe-driven filter, with organic filter membrane of 0,22 μm pores. 5.6Injection loop, volume of 10 μl. 5.7Sieve, with the aperture size of 0,50 mm. 6Procedure 6.1Preparation of test sample 6.2Preparation of test solution 6.3Preparation of biuret working standard solutions 6.4HPLC conditions 6.5Preparation of standard curve 6.6Determination of the biuret content in the test solution 6.7Calculation and expression of the results 6.8Precision 6.8.1Ring test 6.8.2Repeatability, r 6.8.3Reproducibility, R 7Test report关联标准评论