瓶装饮用水中氯酸盐、高氯酸盐和亚氯酸盐离子检测方案(毛细管电泳仪)

Analytical Equipment DETERMINATION OF CHLORATE， PERCHLORATE，AND (CHLORITE IONS IN DRINKING WATER INCLUDING BOTTLED WATER LUMEX Method M 01-52-2012 INTRODUCTION Chlorination remains the most widespread way of disinfecting water in the world. Its flaws are： high toxicity ofchlorine and other chlorinating reagents， also formation of various chlorine-containing compounds， includingchlorite-， chlorate， and perchlorate anions. Maximum permitted levels (MPL) of these components areestablished in WHO Guidelines for drinking water and other regional and national regulations. MEASUREMENT METHOD The method is based on water test processing cation exchanger in the H-form， separation， identification anddetermination of mass concentration of chlorate， perchlorate， and chlorite ions by capillary electrophoresis.Identification and quantitative determination of the analyzed anions is performed by indirect detectionmeasuring UV absorption at 254 or 266 nm wavelength. MEASUREMENT RANGE Ranges of the measured mass concentrations of anions and MPL are listed below. Anions Measurement ranges*， mg/l MPL， mg/I WHO Guidelinesfor drinking water (4"ed.) GSO 149/2014OS 8/2012 ISIRI 1053 Guidelines forCanadian Drinking WaterQuality (2008) Chlorate 0.5-200 0.7 0.7 1 Perchlorate 0.5-50 二 一 Chlorite 0.2-50 0.7 0.7 1 The determination of chlorate， perchlorate， and chlorite anions is not hindered by the presence of chloride，sulfate， nitrate， nitrite， formate， fluoride， phosphate， acetate， carbonate anions， neutral organic compounds，and other inorganic and organic anions in the concentrations that are typical for these types of samples. EQUIPMENT AND REAGENTS The CAPEL capillary 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： 3-nitrobenzoic acid， with TRIS and CTAB Sample： the prepared test of tapwater with an additive Measurement results： C -the accompanying anions (chloride， sulfate， nitrate， 170 mg/L) 1- chlorate (0.5mg/L) 2 - perchlorate (0.5 mg/L) 3-chlorite (0.2 mg/L) The information in this leaflet is supplemental. To get more specific， please contact the manufacturer of CAPEL CE systems LUMEXINSTRUMENTS Group. EUROPE RUSSIA CHINA Lumex Analytics GmbHE-mail： info@lumexanalytics.dewww.lumexanalytics.de ( 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 Beijing Lumex AnalyticalEquipment Co.Ltd.E-mail： lumex@lumex.com.cnwww.lumexcn.comwww.lumexinstruments.com 氯化物仍是世界上最普遍的消毒水的方法。它的缺点是：二氧化氯和其他氯化试剂的高毒性，也容易形成各种含氯化合物，包括绿泥石、氯酸盐和高氯酸盐阴离子。这些物质的最大允许水平（MPL）在WHO饮用水指南和其他区域和国家法规中都有明确规定。毛细管电泳法以H型水处理阳离子交换剂为基础，通过毛细管电泳分离、鉴定来测定氯酸盐、高氯酸盐和绿泥石离子的质量浓度。检测波长为254或266 nm。氯化物、高氯酸盐和绿泥石阴离子的测定不受氯化物、硫酸盐、硝酸盐、亚硝酸盐、甲酸盐、氟化物、磷酸盐、乙酸盐、碳酸根离子、中性有机化合物和其他无机和有机阴离子的的影响。