General information:
Sulphates in drinking water come mainly by passing water through soils with gypsum or brown charcoal, but they can also come (in groundwater) from the decomposition of organic substances that pollute water, acid rains, etc.
Referential after which the analysis is performed:
The analysis for the determination of sulfates at drinking water is performed within its own laboratory according to the standard national STAS 3069-87.
Principle of the method:
Determination of sulfates to drinking water is performed spectrophotometrically.
Sample rejection cases – quantity of inappropriate sample, sample collected in inappropriate containers, samples not properly labelled, etc.
Recipient – clean container.
The amount of sample required to perform the analysis - minimum 100ml.
Processing required after harvesting – not required.
Stable sample – freshly harvested water is stable for 2 days at 2-8°C or 6 hours at ambient temperature.
The analysis method - spectrophotometric.
Reference values according to the Water Law1)
| Parameter / Unit of measurement | CA value (Maximum permissible concentration) |
|
|
max. 250.0 |
Recommendations for performing the analysis/ Effects of exceeding the reference values –
It is extremely important to avoid the use of high sulphate water when drinking.
In order to reduce the level of sulfates in the water, special filters are used.
Bibliography:
- LEGEA 458/2002 as amended and supplemented by Law no. 311/2004, Government Ordinance no. 11/2010, Law no. 124/2010 and Government Ordinance no. 1/2011
