Determination of Waste Phenol Index (TS EN 12457-4)

The phenol index is a concentration of different phenolic compounds according to the degree of color produced by 4-aminoantipyrine after distillation, expressed in milligrams of phenol per liter. In advanced laboratories, methods for determining the phenol index are applied in drinking water, surface water and waste water. Generally, after a pre-distillation, test samples are analyzed by:

• Direct colorimetric method: Measure the phenol index on test samples containing more than 0,10 mg/l in the aqueous phase (without chloroform extraction) using phenol as standard
• Chloroform extraction method: when the colored final product is extracted and concentrated in the chloroform phase, the phenol index is measured without dilution from about 0,002-0,10 mg/l

The main standards based on waste phenol index determination studies are as follows:

• EN 12457-4 Waste characterization - Solid extraction analysis - Suitability test for solid extraction of granular solid wastes and sludges - Part 4: Single-use for materials with a liquid solids ratio of 10 l/kg and a particle size of less than 10 mm (reduced or not reduced) phased party experiment
• TS 6227 ISO 6439 Water quality - Determination of phenol index - Spectrometric methods using 4-Aminoantipyrine after distillation

In the test, analysis, measurement and evaluation studies carried out in our organization, national and international standards and applicable legal regulations are complied with and reliable and impartial results are obtained. These studies are the mostIt is based on state-of-the-art equipment, trained and experienced staff and modern methods. Waste phenol index determination (TS EN 12457-4) services are among the numerous tests carried out in this context.