Surface water quality indicators of Danube Delta lakes between 2003-2005
The most important indicators that are recommended to be analysed for quality classes clasification according with 161//2006 Normative are presented in a mutiannual dinamic 2003-2005. We determined totalmineral nitrogen concentration, total phosphorus concentration and heavy metals: cadmium, zinc, c...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
CITDD Publishing House
2007-10-01
|
Series: | Scientific Annals of the Danube Delta Institute |
Subjects: | |
Online Access: | http://www.ddni.ro/manager/editor/UserFiles/File/Scientific%20annals/volume/13/22.pdf |
Summary: | The most important indicators that are recommended to be analysed for quality classes clasification according with 161//2006 Normative are presented in a mutiannual dinamic 2003-2005. We determined totalmineral nitrogen concentration, total phosphorus concentration and heavy metals: cadmium, zinc, copper and lead. The biogene elements like nitrogen and phosphorus have concentrations corresponding for good waters, under 1.13 mg/l for nitrogen and for phosphorus 0.4 mg/l in 2003. For the heavy metals analysed, we observe theconcentrations that surpasses the limits for the second quality classes are cadmium and lead. |
---|---|
ISSN: | 1842-614X 2247-9902 |