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Displaying 1-5 of 50 results for Tag: Suppressed Conductivity
AN1163: Determination of Anions on the Surface of Printed Circuit Boards by IPC-TM-650 Method 2.3.28 using HPICInstrument Type: IC
Ion chromatography (IC) has become an important technique for the evaluation of ionic cleanliness. This application note describes an IC method using a Thermo Scientific™ Dionex™ IonPac™ AS11-HC-4μm column and a Thermo Scientific™ Dionex™ ICS-5000+ HPIC system to determine extractable anionic contaminants on the surface of PCBs, including inorganic anions and weak organic acids (WOAs) following the extraction procedure described in IPC-TM-650 Method 2.3.28. An ICS-6000 can be used for this application.
AN1157: Determination of Organic Acids in Kombucha Using a High-Pressure Ion Chromatography SystemInstrument Type: IC
This work used the properties of the 4-μm-particle-size Dionex IonPac AS11-HC-4μm column, combined with the Thermo Scientific™ Dionex™ ICS-5000+ HPIC system, to produce a high-resolution separation of organic acids and inorganic anions in kombucha samples, enabling accurate determinations of those analytes. An ICS-6000 can be used for this application.
Trace Anion Analysis in Ultrapure Water Using an Electrolytic Water Purifier with a Compact Ion Chromatography System: 50 ppt StandardInstrument Type: IC
Determinations of trace anions in ultrapure water are important to the electronics industry. In this record, determinations of ng/L (ppt) anions using large volume concentration are made possible by the Electrolytic Water Purifier(EWP) and AutoPrep modules. Calibration standards are prepared using the AutoPrep large and small loops and EWP-purified water diluent, thereby increasing sensitivity by eliminating sources of contamination. The trace anions are separated on an IonPac AS17-C column designed to improve low level sulfate determinations using a Dionex Integrion compact IC system.
AU200: Fast Anion Determinations in Environmental Waters Using a High-Pressure Compact Ion Chromatography SystemInstrument Type: IC
The determination of anions is one of the most important IC applications. Here we have updated Application Note 154 with the 4µm-resin-particle IonPac AS18-Fast-4µm column with expected backpressures approaching the previous system's limitations. In this Application Update, fast anion runs (9 min) were achieved with a gradient separation, saving 4 min run time with while retaining similar chromatography with higher sensitivity than the previous application. This analysis was facilitated by the high pressure capable Dionex Integrion HPIC system configured for Reagent-Free IC.
Determination of Inorganic Anions in Environmental Waters Using a Compact Ion Chromatography SystemInstrument Type: IC
This method shows the determination of inorganic anions in an environmental water sample, previously published in Application Note 154. In this record, the method is executed on an Integrion HPIC system with eluent generation.