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Determination of Inorganic Anions and Melamine in Fertilizers by Ion Chromatography

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  • LIANG, Chen
  • ZHANG, Miaomiao
  • WANG, Xiaojiao
  • YAN, Yunli
  • FU, Pengfei

Abstract

A chromatographic analysis method for determining inorganic anions and melamine in fertilizers was established using ion chromatography (IC). The fertilizer samples were extracted by ultrasonic method with 7 g/L trichloroacetic acid solution and centrifuged. The supernatant is purified by a solid phase extraction column. Then, the anions in the solution were purified using SH-AP-1 (250 mm×4.0 mm) as a separation column, and measured by a suppressed conductivity detector; the melamine in the solution was separated using SH-CC-4 (200 mm×4.0 mm) as a separation column and detected by a UV detector. The results show that the mass concentration of anions had a linear relationship with its peak area within a certain range, the linear correlation coefficient r of the standard curve was greater than 0.999, the recovery rate of spiked samples was 93.4%-104.4%, and the relative standard deviation (RSD) of the measured value (n = 6) was less than 4%. Thus, this method is widely suitable for detection of anions and cations in a variety of fertilizer samples.

Suggested Citation

  • LIANG, Chen & ZHANG, Miaomiao & WANG, Xiaojiao & YAN, Yunli & FU, Pengfei, 2021. "Determination of Inorganic Anions and Melamine in Fertilizers by Ion Chromatography," Asian Agricultural Research, USA-China Science and Culture Media Corporation, vol. 13(08), August.
    • Handle: RePEc:ags:asagre:317690
    DOI: 10.22004/ag.econ.317690
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    Keywords

    Agribusiness;

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