Inorganic cations were determined in municipal wastewater samples using a high pressure capillary IC system. All six cations were separated on IonPac CS16 capillary column at 30 mM MSA and 40 C. The high pressure capabilities of the ICS-5000+ capillary IC system were demonstrated by using flow rates at 3x of the typical capillary flow rate, 30 uL/min. The separation at the standard flow rate of 10 uL/min is also shown. An ICS-6000 can be used for this application.

Ion chromatography (IC) with suppressed conductivity detection is an effective technique to simultaneously determine common inorganic anions in water samples. However determining nitrate and nitrite at low concentrations in high ionic strength samples such as mineral water, wastewater, and brine, can be challenging. IC with UV detection provides an alternate approach for determining ions with chromophore properties without compromising sensitivity. This method updates AU132 using a Dionex IonPac AS18-Fast capillary column on a capillary IC system. An ICS-6000 can be used for this application.

Anion determinations in municipal waste water samples using EPA Method 300.1 on an integrated IC System with a Thermo Scientific Dionex IonPac AS22 anion-exchange column to separate and quantify inorganic anions with manually-prepared carbonate/bicarbonate eluents on a Thermo Scientific Dionex ICS-1100 or a Thermo Scientific Dionex ICS-1600 IC system. This method provides an economical way to meet EPA Method 300.1 (A) regulatory testing requirements.

AS22 Fast_City A Wastewater This method updates inorganic anion determinations using the AS22 Fast carbonate column. All seven anions are determined within 5 min.

In this Application Note, we describe an ion exclusion chromatography (ICE) method with pulsed amperometric detection (PAD) using a Pt disposable working electrode and an optimized waveform to determine total cyanide in drinking and wastewater samples. The samples are acid distilled, trapped in 1 M NaOH, and diluted to 250 mM NaOH prior to analyses using the EPA-approved MICRO DIST™ sample preparation system. This ICE-PAD method has the advantages of eluting cyanide before sulfide with Rs > 3, and excluding other interferences, such as chloride and sulfate that typically interfere in ion ...