AN56DeterminationofTraceAnionsandKeyOrganicAcids创新.PDFVIP

DIONEX Application Note AN 56 July 1988 Determination of Trace Anions and Key Organic Acids in High Purity, Ammoniated, and Borated Waters Found in Steam Cycle Power Plants INTRODUCTION Power Plant Operating Limits In 198~ (Revised . 1984),1 the Electric Power Research InstItute Ionic contamination has.lon.g been recognIzed as a (EPRI) published pressurized water reactor (PWR) primary cause of corrOSIon m steam cycle p°.wer water chemistry guidelines for nuclear power plants. Accordingly, monitorin~ and contr°.11mg plants which called for a limit of 20 ppb of chlo- such contaminants are of great Importance m ride and sulfate in the boiler blowdown from power plant operations. Dionexs chemically s~p- recirculating boilers. Since recirculating boilers pressed Ion Chromatography (IC) technology IS concentrate nonvolatile impurities by a factor of used worldwide to provide the required sub parts- as much as l00X to 200X, feedwater contaminants per-billion (Ppb) level measurement sensitivity for should be held to significantly less than 1 ppb. inorganic anions in high purity water. As descrIbed EPRI published the Interim Consenus Guidelines below, orga