Determination of ultra-trace amounts of inorganic selenium species in natural water by ion chromatography-inductively coupled plasma-mass spectrometry coupled with nano-Al2O3 solid phase extraction

• Authors: Qingyang Liu
• Languages of publication: EN

Abstracts

EN

This work presents a nano-Al2O3 solid phase extraction technique for the determination of ultra-trace amounts of inorganic selenium species in aqueous systems using ion chromatography inductively coupled plasma-mass spectrometry (IC-ICP-MS). In this experiment, the inorganic selenium species were successfully extracted on a nano-Al2O3 solid phase column and then quantitative eluted with a 100 mmol L−1 NaOH solution. Extraction conditions such as solvent identity, solvent concentration, solvent volume, solvent pH and salt addition were optimized. Under the optimum extraction conditions (elute solvent: 100 mmol L−1 NaOH, solvent volume: 4 mL, pH: 7.0), low detection limits (Se (IV): 6 ng L−1, Se (VI): 11 ng L−1; RSD−1, R2 > 0.999) were obtained for all of the analytes. Good spiked recoveries over the range of 80–98% were obtained by applying the proposed method on real environmental water samples. These results indicated that this method is very sensitive and reliable when monitoring trace levels of inorganic selenium species in aqueous samples. [...]

Keywords

EN

IC-ICP-MS; Nano-Al2O3 ; Solid phase extraction; Se(IV); Se(VI)

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2010
• Volume: 8
• Issue: 2
• Pages: 326-330

Dates

published

1 - 4 - 2010

online

23 - 3 - 2010

Contributors

author

Qingyang Liu

• Beijing Center for Physical and Chemical Analysis, 100089, Beijing, China

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Identifiers

DOI

10.2478/s11532-009-0132-x