土壤、废水淤泥、活性污泥和底泥中无机阳离子检测方案(毛细管电泳仪)

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Analytical Equipment DETERMINATION OF WATER-SOLUBLE FORMS OF INORGANIC CATIONS INSOILS， CLAYS， PEAT，WASTEWATER SILT， ACTIVATED SLUDGE， AND BOTTOMSEDIMENTS LUMEX Method M 03-08-2011 INTRODUCTION The content of water-soluble forms of inorganic cations (ammonium， potassium， calcium， sodium，magnesium) is one of the substantial characteristics in agrochemical， land reclamation， and sanitaryassessments of soils (arable， hayland， pasturable， forest nursery soils). The cation balance should becontrolled during ecological soil monitoring for the human activity impact assessment. MEASUREMENT METHOD The measurement method is based on the extraction of water-soluble forms of cations with distilled waterfrom a soil sample and subsequent separation， identification， and determination of analyzed components bythe capillary electrophoresis method with indirect detection at wavelength of 254 or 267 nm. MEASUREMENT RANGE The measurement ranges for inorganic cations are listed below. Cations Measurement ranges*， mg/kg Ammonium 2-20000 Calcium 2-10000 Magnesium 1-10000 Potassium 2-20000 Sodium 2-20000 * for a sample of 2.5-5g The determination of these ions is not hindered by the presence of Ba， Li， Sr， Mn， Fe (II)， Rb， Cs cations inthe concentrations that are typical for this type of samples. EQUIPMENT AND REAGENTS The CAPELcapillary electrophoresis system is used in measurements. Data acquisition， collection，processing and output are performed using a personal computer running under WINDOWSXP/7/8operating system with installed dedicated software package ELFORUN. All reagents must be of analyticalgrade or better. EXAMPLES OF REAL ANALYSES BGE： benzimidazole， with tartaric acid and 18-crown-6 .2mAU Sample： sod-podzolic loamysoil (water extract) Measurement results， mg/kg： 5 1-ammonium (7.3) 2 -potassium (10.6) 3- sodium (5.4) 4- magnesium (7.2) 5 - calcium (33) The information in this leaflet is supplemental. To get more specific， please contact the manufacturer of CAPEL CE systems LUMEXINSTRUMENTS Group. EUROPE Lumex Analytics GmbH E-mail： info@lumexanalytics.de www.lumexanalytics.de ( RUSSI A Lumex-Marketing LLC E-mail： sales@lumex.ru www.lumexinstruments.com ) NORTH AMERICALumex Instruments Canada0890278 B.C. Ltd.E-mail：eaa@lumexinstruments.comwww.lumexinstruments.com www.lumexinstruments.com CHINABeijing Lumex AnalyticalEquipment Co. Ltd.E-mail：lumex@lumex.com.cn帕寸www.lumexinstruments.com LUMEX成功的将毛细管电泳发展成为实验室的常规分析手段，并一直占据该领域的市场领导地位。成熟的仪器、优化的配置、大量的应用方法包集于一体，被用户称为目前性价比最优的分析仪器。CE法、与离子色谱法与常见的湿化学法对饮用水、地表水、工业废水及土壤渗析液中的阴离子分析结果一致性极佳，几种方法可以相互验证。符合标准美国EPA 6500，ASTM D 6508-00；ASTM D7881、ASTM D7882等国际方法。广泛用于解决：常规阴离子检测、高氯酸盐、常规阳离子、金属价态、氯化物、消毒剂及其副产物分析。分析优势特点：1.高效分离效率(百万级理论塔板数)；2.样品试剂和样品量消耗低；3.极低的分析成本，毛细管柱一般无需更换；4.操作简单便捷，实现快速分析 (5-10分钟)。