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 testing, analysis, measurement, and evaluation studies carried out at our organization, national and international standards and current legal regulations are adhered to, and reliable and impartial results are obtained. These studies are based on state-of-the-art technological equipment, a trained and experienced staff, and modern methods. Among the numerous tests conducted within this scope are waste phenol index determination (TS EN 12457-4) services.