Coupled ion chromatography for the determination of chloride, phosphate and sulphate in concentrated nitric acid

Biesaga, Magdalena; Schmidt, Nicole; Seubert, Andreas

doi:10.1016/j.chroma.2003.11.001

Cited by 18 publications

(7 citation statements)

References 10 publications

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“…In the four systems ( Table 2 , Figure 7 ), the CD 1N was most sensitive, with a linear range (LR) of 0.02–1.7 μmol/L and a detection limit (DL) of 0.007 μmol/L, and was selected for detection of sulfate. Comparison of the reported methods for detection of sulfate [ 25 , 26 , 27 , 28 , 29 , 30 ] showed the SERS method was more sensitive. The C 60 catalytic SERS method was used to detect sulfate, but the preparation of C 60 is complex, the C 60 nanosol is unstable [ 25 ], and the CD 1N analytical system overcomes the disadvantages.…”

Section: Resultsmentioning

confidence: 99%

“…Sulfate is one of the important anions in water science, food science, soil chemistry, biology, mineralogy and related disciplines. For analysis of trace SO 4 2− , there are visible–ultraviolet spectrophotometry, turbidimetry, fluorescence spectrophotometry, electrochemical analysis, radiochemical analysis, resonance Rayleigh scattering, ion chromatography, and so on [ 25 , 26 , 27 , 28 , 29 , 30 ]. In this experiment, highly catalytic N-doped carbon dots were prepared for the HAuCl 4 -H 2 O 2 reaction, and a new and sensitive SERS quantitative analysis method was proposed for the determination of sulfate in water and beer samples, based on the CD catalysis.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Highly Catalytic N-Doped Carbon Dots and Their Application in SERS Sulfate Sensing

Wang

Luo

et al. 2018

Materials

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Carbon dots (CD) have excellent stability and fluorescence activity, and have been widely used in fluorescence methods. However, there are no reports about using CD as catalysts to amplify SERS signals to detect trace sulfate. Thus, preparing CD catalysts and their application in SERS sulfate-sensing are significant. In this article, highly catalytic N-doped carbon dots (CDN) were prepared by a hydrothermal procedure. CDN exhibited strong catalysis of the gold nanoparticle (AuNP) reaction between HAuCl4 and H2O2. Vitoria blue 4R (VB4R) has a strong SERS peak at 1614 cm−1 in the formed AuNP sol substrate. When Ba2+ ions were added, they were adsorbed on a CDN surface to inhibit the CDN catalytic activity that caused the SERS peak decreasing. Upon addition of analyte SO42−, a reaction with Ba2+ produced stable BaSO4 precipitate and CDN, and its catalysis recovered to cause SERS intensity increasing linearly. Thus, an SERS method was developed for the detection of 0.02–1.7 μmol/L SO42−, with a detection limit of 0.007 μmol/L.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation of Highly Catalytic N-Doped Carbon Dots and Their Application in SERS Sulfate Sensing

Wang

Luo

et al. 2018

Materials

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“…Ion chromatography can also be used to determine the following: trace amounts of anions and cations in high-purity water [71]; inorganic anions in mineral acids [72]; anions and cations in mineral water [73] and sea water [74]; selected ions in alcohols [75]; ions in plant extracts [76] and natural peat bog water rich in organic compounds [77]. Additionally, ion chromatography is applied to research atmospheric precipitation [78], aerosols [79], or runoff water [80].…”

Section: Ion Chromatography Applicationsmentioning

confidence: 99%

Principles and Applications of Ion Chromatography

Michalski¹

2016

Application of IC‐MS and IC‐ICP‐MS in Environmental Research

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“…On Guard II Ag pretreatment column can remove chloride ions before IC analysis [ 12] ; as a result it cannot measure all the ions simultaneously. Several studies have determined trace anions in high concentration of inorganic acid using the methods of column-switching IC [13] and the coupled IC systems, [7] or by IC with mass spectrometry [14] and sequential FIA and IC instruments. [15] These methods, however, require a large amount of experimental apparatus, and are more complex in operation.…”

Section: Introductionmentioning

confidence: 99%

“…[7 ] If the matrix ion cannot be reduced or eliminated, it will strongly interfere with the separation of ions in an ion chromatography (IC) system, which will result in a momentous loss of separation effi ciency due to the peak overload. Currently, IC is well-established and can be considered a preferable technique for routine analysis for chloride determination.…”

Section: Introductionmentioning

confidence: 99%

Determination of Sulfate in Coastal Salt Marsh Sediments With High-Chloride Concentration by Ion Chromatography: A Revised Method

Yang

Chen

Zhang

2013

Instrumentation Science & Technology

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In order to elucidate the relationship between sulfate reduction and mineralization of organic matter in coastal sediments, the content of sulfate in sediment samples should be measured. Chloride, sulfate, bromide, nitrate, and phosphate are the standard anions in coastal sediment samples. Ion chromatography (IC) is one of the popularly used techniques for determinations of these anions. However, the peaks of the fi ve anions in the IC system coincide with each other under high chloride conditions when using the normal method. In this article, an improved, highly sensitive method for simultaneous separation and determination of sulfate, bromide, nitrate, and phosphate in the samples with high chloride concentration is established and evaluated by IC. In high concentrations of chloride samples, the effects of eluent concentration on the retention time and separation of other anions are studied. The peaks of these anions can be well separated on an AS11 ion-exchange column by a low concentration of NaOH eluent (10 mM). in one injection. Gradient elution is helpful to shorten retention time, especially for phosphate. The method detection limit of sulfate is 0.091 mg·L -1 . The recovery of sulfate ranged from 100.5% to 106.8%, when the concentrations of standard solution are close to those of the samples. This technique was validated by determining the content of sulfate and chloride in coastal salt marsh sediment samples.

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Coupled ion chromatography for the determination of chloride, phosphate and sulphate in concentrated nitric acid

Cited by 18 publications

References 10 publications

Preparation of Highly Catalytic N-Doped Carbon Dots and Their Application in SERS Sulfate Sensing

Preparation of Highly Catalytic N-Doped Carbon Dots and Their Application in SERS Sulfate Sensing

Principles and Applications of Ion Chromatography

Determination of Sulfate in Coastal Salt Marsh Sediments With High-Chloride Concentration by Ion Chromatography: A Revised Method

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