General information:
Aluminiu is an essential nutrient for the human body and is found in important quantities in mineral waters.
Referential after which the analysis is performed:
The analysis for determining the aluminum content in drinking water is performed within its own laboratory according to the national standard SR ISO 8288:2001.
The principle of the method:
Determination of the aluminum content in drinking water is performed by molecular absorption spectroscopy method.
Canuses of sample rejection – quantity of inappropriate sample, sample collected in inappropriate containers, samples not properly labelled, etc.
Recipient of collection – clean container, before sampling, the container after being washed in the usual way, is washed with nitric acid d = 1.4 diluted 1+1 and then with water.
The amount of sample required to perform the analysis - minimum 100ml.
Processing required after harvesting – The samples are taken in polyethylene or polypropylene containers, clean. After sampling, acidify, as soon as possible, with 8 ml of conc. hydrochloric acid to reduce the pH and to avoid precipitation of calcium carbonate. The samples should be analyzed as soon as possible after sampling.
Sample stability – freshly harvested water is stable for 2 days at 2-8°C or 6 hours at ambient temperature.
The analysis method – molecular absorptionspectroscopy.
Reference values according to water law1)
| Parameter / Unit of measurement | CA value (Maximum permissible concentration) |
| Aluminiu, μg/L | 200 |
Recommendations for performing the analysis/ Effects of exceeding the reference values –
The excess intake of aluminum in a water translates into mineral deposits on pipes and harmful effects on human health.
For reducing the aluminum content of the water, filters and special installations are often used.
Bibliography:
- LEGEA 458/2002 with subsequent amendments and completions Law no. 311/2004, Government Ordinance no. 11/2010, Law no. 124/2010 and Government Ordinance no. 1/2011
