Determination of trace metallic impurities in high-purity quartz by ion chromatography

Dash, K.; Chandrasekaran, K.; Thangavel, S.; Dhaville, S.M.; Arunachalam, J.

doi:10.1016/j.chroma.2003.08.014

Cited by 15 publications

(11 citation statements)

References 15 publications

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“…The quartz samples were digested using a multi-channel vapour phase digestion (MCVPD) assembly, similar to that described previously [3]. The sample rack in that design was modified so that 10 samples (including three blanks) could be digested within a reasonable time (6 h) when a mixture of HF, HNO 3 and H 2 O 2 was used instead of HF alone.…”

Section: Vpd Apparatusmentioning

confidence: 99%

“…Purified quartz is a suitable matrix for the IC determination of trace metals [3], because the resulting silica matrix along with unreacted HF can be completely volatilised. So, initially it looked possible, that by using a mixture of oxidising agents along with HF, followed by matrix volatilisation, phosphorus can be determined by IC after its conversion to orthophosphate ion.…”

Section: Release Of Phosphate Through Ion-exchange Dissolutionmentioning

confidence: 99%

“…Purified quartz can be digested by HF vapour [3] to determine trace metals. This approach requires modification to prevent loss of phosphorus.…”

Section: Vapour Phase Digestionmentioning

confidence: 99%

“…For the analysis of quartz for trace metals, various spectroscopic techniques [2] and also ion chromatography (IC) [3] have been used. Determination of a non-metal like phosphorus by quadrupole ICP-MS [4] is prone to severe interferences.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Ion chromatographic determination of trace level phosphorus in purified quartz

Dash

Thangavel

Rao

et al. 2004

Journal of Chromatography A

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Section: Vpd Apparatusmentioning

confidence: 99%

Section: Release Of Phosphate Through Ion-exchange Dissolutionmentioning

confidence: 99%

“…Purified quartz can be digested by HF vapour [3] to determine trace metals. This approach requires modification to prevent loss of phosphorus.…”

Section: Vapour Phase Digestionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ion chromatographic determination of trace level phosphorus in purified quartz

Dash

Thangavel

Rao

et al. 2004

Journal of Chromatography A

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“…Examples of mixed-bed separations have been published for determination of lanthanides (Bruzzoniti et al, 1997), where retention mechanisms are complex (Janvion et al, 1995), and in other applications such as determining trace impurities in quartz (Dash et al, 2004). In 1986 Hartwick's group published a mixed-bed method for oligonucleotide and DNA fragment separation (Floyd et al, 1986).…”

Section: Mixed-bedmentioning

confidence: 99%

Comprehensive multi‐dimensional liquid chromatographic separation in biomedical and pharmaceutical analysis: a review

Dixon

Pitfield

Perrett

2006

Biomedical Chromatography

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‘Multi‐dimensional’ liquid separations have a history almost as long as chromatography. In multi‐dimensional chromatography the sample is subjected to more than one separation mechanism; each mechanism is considered an independent separation dimension. The separations can be carried out either offline via fraction collection, or directly coupled online. Early multi‐dimensional separations using combinations of paper chromatography, electrophoresis and gels, in both planar and columnar modes are reviewed. Developments in HPLC have increased the number of measurable analytes in ever more complex matrices, and this has led to the concept of ‘global metabolite profiling’. This review focuses on the theory and practice of modern ‘comprehensive’ multi‐dimensional liquid chromatography when applied to biomedical and pharmaceutical analysis. Copyright © 2006 John Wiley & Sons, Ltd.

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Ion chromatography with the indirect ultraviolet detection of alkali metal ions and ammonium using imidazolium ionic liquid as ultraviolet absorption reagent and eluent

Liu

2016

J of Separation Science

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Indirect ultraviolet detection was conducted in ultraviolet-absorption-agent-added mobile phase to complete the detection of the absence of ultraviolet absorption functional group in analytes. Compared with precolumn derivatization or postcolumn derivatization, this method can be widely used, has the advantages of simple operation and good linear relationship. Chromatographic separation of Li(+) , Na(+) , K(+) , and NH4 (+) was performed on a carboxylic acid base cation exchange column using imidazolium ionic liquid/acid/organic solvent as the mobile phase, in which imidazolium ionic liquids acted as ultraviolet absorption reagent and eluting agent. The retention behaviors of four kinds of cations are discussed, and the mechanism of separation and detection are described. The main factors influencing the separation and detection were the background ultraviolet absorption reagent and the concentration of hydrogen ion in the ion chromatography-indirect ultraviolet detection. The successful separation and detection of Li(+) , Na(+) , K(+) , and NH4 (+) within 13 min was achieved using the selected chromatographic conditions, and the detection limits (S/N = 3) were 0.02, 0.11, 0.30, and 0.06 mg/L, respectively. A new separation and analysis method of alkali metal ions and ammonium by ion chromatography with indirect ultraviolet detection method was developed, and the application range of ionic liquid was expanded.

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Determination of trace metallic impurities in high-purity quartz by ion chromatography

Cited by 15 publications

References 15 publications

Ion chromatographic determination of trace level phosphorus in purified quartz

Ion chromatographic determination of trace level phosphorus in purified quartz

Comprehensive multi‐dimensional liquid chromatographic separation in biomedical and pharmaceutical analysis: a review

Ion chromatography with the indirect ultraviolet detection of alkali metal ions and ammonium using imidazolium ionic liquid as ultraviolet absorption reagent and eluent

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