ISO 16588 Water Quality, Determination of Six Complexing Agents, Standard Test for Gas Chromatographic Method

Product Safety Tests

ISO 16588 Water Quality, Determination of Six Complexing Agents, Standard Test for Gas Chromatographic Method

EUROLAB laboratory provides testing and compliance services within the scope of ISO 16588 standard. This International standard specifies a method for the determination of the following six water-soluble organic complexing agents in the concentration range from 0,5 micrograms/liter to 200 micrograms/liter:

ISO 16588 Water Quality, Determination of Six Complexing Agents, Standard Test for Gas Chromatographic Method

  • EDTA (ethylenedinitrilotetraacetic acid);
  • NTA (nitrilotriacetic acid);
  • DTPA (diethylenetrinitrilopentaacetic acid);
  • MGDA (methylglycinediacetic acid);
  • ß-ADA ( ß-alaninediacetic acid);
  • 1,3-PDTA (1,3-propylenenitrilotetraacetic acid).

A test sample is stabilized with formaldehyde and evaporated to dryness. Hydrochloric or formic acid is added and the sample is evaporated to dryness again.

The complexing agents are then esterified to n-propyl, iso-propyl or n-butyl esters. Water is added and the esters are extracted with n-hexane, separated and identified by gas chromatography and quantified by a nitrogen sensitive detector or mass spectrometry.

EUROLAB assists manufacturers with ISO 16588 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.

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