Acid Rain Analysis
This report discusses an intercomparison exercize between laboratories carrying out acid rain analysis. The chemical results from the study stress the need for strict measurement protocols to improve comparability between different laboratories. Some analytical techniques proved to be inadequate for measuring small samples, for example the use of colorimetric titration in the case of alkalinity and turbidity for sulphate. Outlier values were found in some cases even when the most sophisticated equipment was used, indicating a lack of good laboratory practice. This is particularly evident where low concentrations are used. Differences in the concentrations of anions and cations, and the comparison of measured and calculated conductivity, indicate that some laboratories are still not checking their results using the methods suggested in previous exercizes.
Bibliographic Reference: EUR 18135 EN (1998) 65pp.
Availability: Available from CCR Ispra - Servizio Pubblicazioni
Record Number: 199910463 / Last updated on: 1999-03-19
Original language: en
Available languages: en