BS EN 15452-2008 肥料.螯合剂的测定.用反相高效液相色谱法(HPLC)测定o,p-EDDHA螯合的铁

标准号：BS EN 15452-2008
中文标准名称：肥料.螯合剂的测定.用反相高效液相色谱法(HPLC)测定o,p-EDDHA螯合的铁
英文标准名称：Fertilizers - Determination of chelating agents - Determination of iron chelated by o,p-EDDHA by reversed phase HPLC
标准类型：G20
发布日期：2008/8/29 12:00:00
实施日期：2008/8/29 12:00:00
中国标准分类号：G20
国际标准分类号：65.080
引用标准：EN 1482-2
适用范围：This European Standard specifies a method for the chromatographic determination of the amount of ironchelated by each of the individual isomers of the chelating agent ortho-para EDDHA (o,p-EDDHA) in fertilizers.The method allows the identification of this chelating agent and the determination of the water soluble fractionof iron chelated by this chelating agent. The method is not applicable for the determination of the amount offree chelating agent.NOTE 1 This method has been shown to be also suitable for the determination of the amount of iron chelated by eachof the individual isomers of the chelating agent ortho-ortho EDDHA (o,o-EDDHA) in fertilizers.NOTE 2 o,o-EDDHA and o,p-EDDHA are abbreviations used in this European Standard for the sake of simplicity. Forcomplete names see Annex C.NOTE 3 The substances o,o-EDDHA and o,p-EDDHA both exist as different stereoisomers. For o,o-EDDHA a mesoform and a d/l pair (the racemic isomers) exist, for o,p-EDDHA two different d/l pairs exist. All four stereoisomers areobserved separately in this method.NOTE 4 Currently, an analytically pure standard only exists for o,o-EDDHA. The method for o,p-EDDHA has beendeveloped with an o,p-EDDHA standard containing an uncertain concentration of o,p-EDDHA.