Vattenkvalitet

This part of ISO 13164 gives general guidelines for sampling, packaging, and transporting of all kinds of water samples, for the measurement of the activity concentration of 222Rn.

The test methods fall into two categories:

a) direct measurement of the water sample without any transfer of phase (see ISO 13164-2[7]);

b) indirect measurement involving the transfer of the 222Rn from the aqueous phase to another phase (see ISO 13164-3[8] and 13164-4[9]).

The test methods can be applied either in the laboratory or on-site. The laboratory is responsible for ensuring the suitability of the test method for the water samples tested.

ISThis part of ISO 13164 specifies a test method for the determination of 222Rn activity concentration in a sample of water following its transfer from the aqueous phase to the gas phase by degassing and its detection. It gives recommendations for rapid measurements performed within less than 1 h. The 222Rn activity concentrations, which can be measured by this test method utilizing currently available instruments, range from 0,1 Bq∙l−1 to several hundred thousand becquerels per litre for a 100 ml test sample. This test method is used successfully with drinking water samples. The laboratory is responsible for ensuring the validity of this test method for water samples of untested matrices. This test method can be applied on field sites or in the laboratory.

This document presents a method for evaluating the performance of adsorbent nanomaterials in water treatment for water reuse. By utilizing the adsorption capabilities of nanomaterials, we provide an evaluation method that allows for the assessment of material performance using general parameters, such as the adsorption and desorption capacities.