Matrix Effects in the Determination of Low Anion Concentrations using Suppressed IC

Neele, J; Cleven, R.F.M.J.; Wiel, H. van de

doi:10.1080/03067310290024058

Cited by 3 publications

(7 citation statements)

References 9 publications

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“…Neither resolution decline nor peaks broadening were observed in samples with high anion concentration. These effects were previously reported (Neele et al 2002) as related to high ionic strength matrices in IC but were not observed in the wastewater matrices tested. This difference could be due to the exchange capacity of the columns.…”

Section: Resultssupporting

confidence: 69%

“…Both LOD and LOQ obtained by visual method are higher than those described elsewhere (USEPA 1993;Neele et al 2002;Lopez-Moreno et al 2010). However, these authors calculated the LOD and LOQ by multiplying the standard deviation of the lower standard by 3 (to obtain LOD) or 10 (to obtain LOQ).…”

Section: Limits Of Detection and Quantificationmentioning

confidence: 73%

“…Neither of them utilised the visual method, which gives a stricter response. Additionally, EPA (1993) and Neele et al (2002) used analytical columns characterised by low exchange capacity (20 μeq L −1 ).…”

Section: Limits Of Detection and Quantificationmentioning

confidence: 99%

“…The Environment Protection Agency (EPA) validated an IC method to analyse various anions in drinking water, surface water, groundwater, mixed domestic and industrial wastewaters (USEPA 1993). Since then, many papers have been published validating IC methodologies for different environmental samples, such as drinking water (Jackson et al 1998;Miskaki et al 2007;Lopez-Moreno et al 2010), well-water (Lopez-Moreno et al 2010), brines (Singh et al 1996), high ionic water sample (Neele et al 2002), coal mine and river water sample (Michalski et al 2012).…”

Section: Introductionmentioning

confidence: 99%

“…It is usually caused by compound co-elution with the analyte, which can either reduce or increase the response (signal suppression or signal enhancement, respectively) (Matuszewski et al 2003;Kruve et al 2015). There is a claim that IC is highly matrix independent (Neele et al 2002), but the matrix effect in anion analyses using IC techniques was extensively investigated for cleaner matrices, such as drinking water and groundwater (Miskaki et al 2007;Lopez-Moreno et al 2010). Yet, to date, there are no studies addressing the matrix-effect in anion analyses using IC techniques adopted for wastewater samples.…”

Section: Introductionmentioning

confidence: 99%

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Matrix Effect Assessment of an Ion Chromatographic Method to Determine Inorganic Anions in Wastewater

Costa

Camiloti

Sabatini

et al. 2018

Water Air Soil Pollut

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Inorganic anion monitoring is essential for bioreactor operation and is related for pollution control or energy and products recovery. However, there is a lack of studies validating methods for inorganic anions analyses in conditions compatible to those in bioreactor operations treating different types of wastewater. This paper provides a systematic statistical study and matrix-effect assessment for sugarcane vinasse, leachate, sewage and synthetic sewage. Sample preparation consisted of only a filtration and sample dilution. Cl − , NO 2 − , NO 3 − , PO 4 3− and SO 4 2− were determined in a Dionex ICS 5000® equipped with a chemical conductivity suppressor. Calibration curves were linear and well-adjusted between 2.5 and 50 mg L −1 for all the anions in all the tested matrices, except PO 4 3− and SO 4 2− in vinasse. A calibration range for PO 4 3− in all tested matrices was 5.0 to 100 mg L −1 , whereas a range from 5.0 mg L −1 to 50 mg L −1 was obtained for SO 4 2− in vinasse. All the anions yielded recoveries in the range of 85-115% for all the tested matrices. Relative standard deviations lower than 10 and 2% were achieved for peak areas and retention times, respectively. A signal enhancement was observed for all the tested matrices and all the anions. The matrix effect level varied from −1.7 (NO 2 − in vinasse) to −33.9% (Cl − in leachate). Sewage was the less affected matrix, while leachate gave higher matrix effects. Validation results and the matrix effect assessment showed that a simple sample preparation is suitable for multi-elemental analyses of inorganic anions for complex environmental samples.

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Section: Resultssupporting

confidence: 69%

Section: Limits Of Detection and Quantificationmentioning

confidence: 73%

Section: Limits Of Detection and Quantificationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Matrix Effect Assessment of an Ion Chromatographic Method to Determine Inorganic Anions in Wastewater

Costa

Camiloti

Sabatini

et al. 2018

Water Air Soil Pollut

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show abstract

Equilibrium-based approach for prediction of matrix-related interferences in anion chromatography

Hajós

Horváth

2008

Journal of Chromatography A

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Utilization of Matrix Effect for Enhancing Resolution in Cation Exchange Chromatography

Páll,

Kormány,

Horváth

2024

Molecules

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In ion chromatography studies, the matrix effect of other inorganic ions present in the sample is a well-known phenomenon. In this work, the behavior of inorganic and organic ions was studied in a system overloaded with ammonium ions. The ammonium ions came from a solution of ammonium hydroxide in various concentrations (0.25–1.25%). In this system, which was significantly overloaded with ammonium ions, the behavior of three ions were tested (lithium, tris, and sodium cations). The measurements were performed at different eluent concentrations (6–17 mM), chromatographic column temperatures (25–40 °C), and injected volumes (15–40 µL). The retention times of sodium and lithium ions increased with increasing amounts of injected ammonium, while tris remained essentially unchanged, indicating that the resolution of these ions can be influenced by varying the concentration of the matrix. The results suggested that the observed effect was due to a combination of the pH change caused by the injected matrix, the dissociation of tris ions, the dissociation of the carbocylic ion-exchange groups of stationary phase, the change in buffer capacity, and the amount of ammonium ion introduced. It has been shown that in a well-designed experiment, the addition of ammonium hydroxide to the sample at concentrations greater than 1% can improve the efficiency of organic and inorganic cation separation. It was found that 8 mM methanesulfonic acid eluent, 30 °C, 1% ammonium hydroxide matrix concentration, and 25 µL injection were optimal for the baseline separation of tris and sodium ions on the high-capacity Dionex CS16 column. These ions could not be separated on this column without the presence of the ammonium matrix.

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Matrix Effects in the Determination of Low Anion Concentrations using Suppressed IC

Cited by 3 publications

References 9 publications

Matrix Effect Assessment of an Ion Chromatographic Method to Determine Inorganic Anions in Wastewater

Matrix Effect Assessment of an Ion Chromatographic Method to Determine Inorganic Anions in Wastewater

Equilibrium-based approach for prediction of matrix-related interferences in anion chromatography

Utilization of Matrix Effect for Enhancing Resolution in Cation Exchange Chromatography

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