EN 15452-2008
肥料.螯合剂的测定.由反相高效液相色谱法对o,p-EDDHA的铁螯合物进行测定[代替:CEN CEN/TS 15452]
Fertilizers - Determination of chelating agents - Determination of iron chelated by o,p-EDDHA by reversed phase HPLC [Superseded: CEN CEN/TS 15452]
EN 15452-2008 中，可能用到以下仪器设备
非常抱歉，我们暂时无法提供预览，您可以试试： 免费下载 EN 15452-2008 前三页，或者稍后再访问。
点击下载后，生成下载文件时间比较长，请耐心等待......
- 标准号
- EN 15452-2008
- 发布日期
- 2008年07月01日
- 实施日期
- 废止日期
- 无
- 国际标准分类号
- 65.080
- 发布单位
- IX-CEN
- 引用标准
- EN 1482-2
- 被代替标准
- CEN/TS 15452-2006
- 适用范围
- This European Standard specifies a method for the chromatographic determination of the amount of iron chelated 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 fraction of iron chelated by this chelating agent. The method is not applicable for the determination of the amount of free chelating agent. NOTE 1 This method has been shown to be also suitable for the determination of the amount of iron chelated by each of 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. For complete 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 meso form and a d/l pair (the racemic isomers) exist, for o,p-EDDHA two different d/l pairs exist. All four stereoisomers are observed separately in this method. NOTE 4 Currently, an analytically pure standard only exists for o,o-EDDHA. The method for o,p-EDDHA has been developed with an o,p-EDDHA standard containing an uncertain concentration of o,p-EDDHA.