Measurement of trace nitrate concentrations in seawater by ion chromatography with valve switching

Juan Du; Yun Fa; Yue Zheng; Xuebing Li; Fanglin Du; Haiyan Yang

doi:10.1007/s00343-014-3191-6

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Measurement of trace nitrate concentrations in seawater by ion chromatography with valve switching

Updated：2023-05-16

- Measurement of trace nitrate concentrations in seawater by ion chromatography with valve switching
- Journal of Oceanology and Limnology Vol. 32, Issue 3, Pages: 732-736(2014)
- Affiliations：
  
  1. Public Laboratory Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences
  2. College of Materials Science and Engineering Qingdao University of Science & Technology
  3. College of Food Science and Engineering Shandong Agricultural University
  4. Heterogeneous Catalysis Conversion Group Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences
- Author bio：
- Funds：
- DOI：10.1007/s00343-014-3191-6
  CLC：
- Online First：04 May 2014，
  
  Published：2014
- Accepted：
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Du, J., Fa, Y., Zheng, Y. et al. Measurement of trace nitrate concentrations in seawater by ion chromatography with valve switching., Chin. J. Ocean. Limnol. 32, 732–736 (2014). https://doi.org/10.1007/s00343-014-3191-6
DOI：

Du, J., Fa, Y., Zheng, Y. et al. Measurement of trace nitrate concentrations in seawater by ion chromatography with valve switching., Chin. J. Ocean. Limnol. 32, 732–736 (2014). https://doi.org/10.1007/s00343-014-3191-6 DOI：

摘要

Abstract

An ion chromatographic method with a valve switching facility was developed to determine trace nitrate concentrations in seawater using two pumps

two different suppressors

and two columns. A carbohydrate membrane desalter was used to reduce the high concentrations of sodium salts in samples. In this method

trace nitrate was eluted from the concentrator column to the analytical columns

while the matrix fl owed to waste. Neither chemical pre-treatment nor sample dilution was required. In the optimized separation conditions

the method showed good linearity ( R >0.99) in the 0.05 and 50 mg/L concentration range

and satisfactory repeatability (RSD<5%

n =6). The limit of detection for nitrate was 0.02 mg/L. Results showed that the valve switching system was suitable and practical for the determination of trace nitrate in seawater.

关键词

Keywords

references

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