On-line monitoring of nine haloacetic acid species at the μgL−1 level using post-column reaction-ion chromatography with nicotinamide fluorescence

Direct determination of trace-level haloacetic acids in drinking water by two-dimensional ion chromatography with suppressed conductivity

“…The second type of IC detection is MS, often used in tandem [29,30]. A third type of IC detectionis fluorimetry(FL), associated with post-column reaction (PCR) [31]. All LC techniques avoid the tedious steps of sample treatment for GC, with LODbetween 0.0007 µg/L and 35.4 µg/L as shown in Table 1.…”

A fully-automated analyzer for determining haloacetic acid concentrations in drinking water

“…All samples were analyzed in duplicate for HAA9 using the optimized SIA-PCR-IC and USEPA 552.3 within 24 h of each other to reduce bias from continued formation of HAAs in the sample bottles (Emmert et al, 2007Hong et al, 2008;Simone et al, 2009). Water quality data was gathered for each sample location from the most recent available water quality report.…”

“…For continuous, on-line, real-time analysis, an automated preconcentration module must do all of the sample handling and preparation steps for SPE preconcentration from sample intake and acidification to elution onto the analyzer for injection. Flow injection analysis (FIA) and sequential injection analysis (SIA) have been regularly used for drinking water sample analysis (Karlberg and Pacey, 1989;Simone et al, 2006Simone et al, , 2009Emmert et al, 2007Emmert et al, , 2009Mesquita and Rangel, 2009;Ranaivo et al, 2011). SIA includes many of FIA's advantages such as highly reproducible flow rates and timing, and is a more appropriate choice here because it uses discontinuous, reversible flow, versus FIA's continuous, unidirectional flow (Skoog et al, 2006).…”

Umweltanalytik mit Ionenchromatografie: Status quo und Zukunftsperspektiven

“…Die wichtigsten Detektionsarten sind die Leitfähigkeitsdetekti-on in Verbindung mit der Suppressionstechnik, die ESI-Single-Quadrupol-MS (Barron und Paull 2006;Matthew et al 2009;Roehl et al 2002) sowie die ICP-MS (Shi und Adams 2009;Liu et al 2004;Guo et al 2003). Daneben finden sich eine Anwendung der Fluoreszenzdetektion in Kombination mit einer Nachsäulenderivatisierung (NSD, Reagenz: Nicotinamid) (Simone et al 2006(Simone et al , 2009 sowie, in jüngster Zeit, mehrere IC-ESI-MS/MS-Applikationen (Zaffiro et al 2009;Xiao et al 2007;Anon 2008;Slingsby et al 2009). …”

“…Zur Trennungsoptimierung werden zwei IonPac AS9-HC-Säulen hintereinander geschaltet. Die Probeninhaltsstoffe werden mit einem Boratpuffer-/NaOHGradienten eluiert (Simone et al 2009). …”