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肥料.用色谱法测定肥料的螯合剂.第2部分:用离子偶色谱法测定o,o-EDDHA和o,o-EDDHMA螯合的铁  
 【英文标准名称】  Fertilizers - Determination of chelating agents in fertilizers by chromatography - Part 2: Determination of Fe chelated by o,o-EDDHA and o,o-EDDHMA by ion pair chromatography English version of DIN EN 13368-2:2007-06
 【原文标准名称】  肥料.用色谱法测定肥料的螯合剂.第2部分:用离子偶色谱法测定o,o-EDDHA和o,o-EDDHMA螯合的铁
 【标准号】  DIN EN 13368-2-2007
 【标准状态】  废止
 【国别】  德国
 【发布日期】  2007-06
 【实施或试行日期】  
 【发布单位】  德国标准化学会(DE-DIN)
 【起草单位】  
 【标准类型】  ()
 【标准水平】  ()
 【中文主题词】  螯合剂;螯合化;化学分析和测试;色谱法;钴;铜;测定;测定程序;肥料;离子交换色谱法;铁;实验室器皿;锰;土壤改良物质;测试;锌
 【英文主题词】  Chelating agents;Chelatization;Chemical analysis and testing;Chromatography;Cobalt;Copper;Determination;Determination procedures;Fertilizers;Ion-exchange chromatography;Iron;Laboratory ware;Manganese;Soil improving materials;Testing;Zinc
 【摘要】  This document specifies a method for the chromatographic determination of the iron chelated by each individual ortho(hydroxy)-ortho(hydroxy) isomer of the chelating agents o,o-EDDHA and o,oEDDHMA in fertilizers containing one or both of these substances. The method allows the identification and the determination of the total concentration of water soluble iron chelates of these chelating agents.lt does not determine the free form of the chelating agents.NOTE 1 The substances EDDHA(ethylene diamine di(hydroxy phenyl) acetic acid)and EDDHMA(ethylene diaminedi(hydroxy methyl phenyl)acetic acid) exist as several different isomeric forms. Positional isomers for the hydroxyl ormethyl groups(in ortho,meta,and para positions)as well as stereo isomers(meso and dl-racemic forms)are known.Bothmeso and dl-racemic forms of the ortho,ortho-EDDHA andortho,ortho-EDDHMA are positional isomers for the hydroxyl groups allowed by the Regulation(EC) No 2003/2003. Since para,method here described the para,meta and ortho methyl positional isomers of the o,o-EDDHMA are considered together.NOTE 2 At present,analyticallypure standards only exist for ortho,ortho-EDDHA and ortho,ortho-EDDHAM.All other substances being unavailable as a standard,the influence of their eventual presence in the samples(with respect to the sensitivity and the selectivity of this method)has not been studied.NOTE 3 The meso and the dl-racemic forms of o,o-EDDHA and o,o-EDDHMA can be determined separately by this method.This procedure concerns EC fertilizers covered by Regulation (EC)No 2003/2003[5].lt is applicable to a mass fraction of the metal chelated of at least 0,625﹪.
 【中国标准分类号】  B10
 【国际标准分类号】  65_080
 【页数】  20P.;A4
 【正文语种】  英语
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