Navigation Links
Sediment pollution should be included in water quality assessment
Date:10/5/2010

and organic compounds. Further hydromorphological pressure comes from the construction of ports, dredging, sediment disposal and land reclamation.

The study focused on the trends of water and sediment contamination by metal pollutants (arsenic, cadmium, copper, chromium, mercury, nickel, lead and zinc) and the response of these areas to water treatment programmes in recent years.

Two methodologies

The chemical status of these water bodies was assessed using two approaches: (i) following the principle of one out, all out as established by the WFD any metal in waters over the EQS will result in the whole body of water failing to achieve the chemical status, and (ii) combining an analysis of the chemical quality of both the surface waters and the underlying sediment, using a weighted methodology proposed by these researchers previously.

Using the first approach, few of the water bodies achieved good chemical status, and the percentage of systems meeting this status falls over time, having reached values close to zero in recent years. Using the second approach, more than 50 per cent of the water bodies achieved Good Status, with the percentage of systems meeting this status remaining steady over time.

The researchers argue that the second approach is more accurate in assessing chemical status as it is better at discriminating between less polluted water and that which is highly polluted, and more in line with the responses of the biological indicators. Moreover, when all the information was incorporated at the level of water bodies from various biological, hydromorphologic, physico-chemical and chemical indicators, the ecological quality of water bodies in the Basque Country showed progressive recovery, especially since 2000, when most of the water treatment plans were completed.

By considering both water and sediment analysis in determining the status of water quality, resources could better be target
'/>"/>

Contact: Amaia Portugal
a.portugal@elhuyar.com
34-943-363-040
Elhuyar Fundazioa
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Paleozoic sediment curve provides new tool for tracking sea-floor sediment movements
2. Sedimentary records link Himalayan erosion rates and monsoon intensity through time
3. Ultra-fine coatings on sediment grains influence nitrate and sulfate storage in soil
4. Soil and sediment contamination assessment more accurate
5. Sediment yields climate record for past half-million years
6. Arctic lake sediments show warming, unique ecological changes in recent decades
7. Delineating primary and secondary organic carbon in neoproterozoic glacial sediments
8. What lies beneath: Study examines sediment movement during floods in rivers
9. Chemical equator discovery will aid pollution mapping
10. Lichens function as indicators of nitrogen pollution in forests
11. Wildfires cause ozone pollution to violate health standards, new study shows
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/27/2014)... Listeria is a dreaded bacterium that can be ... last few weeks, 28 persons in Denmark have been ... in supermarkets. 13 have died. , The bacterium is ... uncanny ability to adapt to changes in its surroundings, ... Together with colleagues from the Department of Biochemistry and ...
(Date:8/27/2014)... that century-old museum specimens hold clues to how global climate ... and kill trees and the news is not good. ... oak and maple trees in warmer urban areas, which raises ... warming," says Dr. Elsa Youngsteadt, a research associate at NC ... , "More scale insects would be a problem, since scales ...
(Date:8/26/2014)... Like a protective tent over a colony of ... infections especially difficult. Microorganisms protected in a biofilm ... antibiotic resistance and recalcitrance to treatment, and biofilm-protected ... bacterial infections in humans and are 50 to ... bacterial infections. , "In essence, we may have ...
Breaking Biology News(10 mins):Researchers discover why Listeria bacterium is so hard to fight 2Researchers discover why Listeria bacterium is so hard to fight 3Museum specimens, modern cities show how an insect pest will respond to climate change 2Breakthrough antibacterial approach could resolve serious skin infections 2Breakthrough antibacterial approach could resolve serious skin infections 3
... Science and Technology has awarded almost $100,000 as part ... companies based in NJIT,s high technology business incubator. ... www.lenterra.com , located in NJIT,s Enterprise Development Center (EDC), ... "The Center works hard to help young inventors ...
... aromatase inhibitors to treat breast cancer or prevent its ... dietary supplement, researchers report. Genistein, a soy isoflavone ... can negate the effectiveness of aromatase inhibitors, which are ... promote tumor growth in some types of breast cancer. ...
... scientists and colleagues have completed the genome sequence and ... and destructive plant parasites - Meloidogyne hapla , ... northern root-knot nematode. The research could help lead ... the ubiquitous parasitic worm, which, along with other species ...
Cached Biology News:Exciting new companies at NJIT's small biz incubator get 100K in grants 2The dietary supplement genistein can undermine breast cancer treatment 2The dietary supplement genistein can undermine breast cancer treatment 3NC State researchers get to root of parasite genome 2NC State researchers get to root of parasite genome 3
(Date:8/26/2014)... WASHINGTON , Aug. 26, 2014 ... Next Generation Dx Summit; Moving Assays to ... "Targeted Detection and Monitoring of Cell Free Tumor ... the analytical component of its Precision Cancer Monitoring ... high clinical sensitivity for the detection of tumor ...
(Date:8/26/2014)... 2014  Guardant Health, a healthcare company focused ... products, has been recognized today by the World ... . As an innovator in non-invasive, tumor profiling, ... a wide variety of industries and regions to ... ® , Guardant Health,s first commercially available product, ...
(Date:8/26/2014)... , Aug. 26, 2014 Albany Molecular ... that William S. Marth , President and Chief ... Stanley Global Healthcare Conference on Monday, September 8, 2014 ... audio webcast of the presentation can be accessed at ... The webcast will be archived for 90 ...
(Date:8/26/2014)... MA (PRWEB) August 26, 2014 ... manage core research facilities , the University ... Kansas Cancer Center have chosen iLab Solutions' web-based ... effectively increase productivity. , "We are very ... and KU Cancer Center signed on with us,” ...
Breaking Biology Technology:Highly Sensitive and Quantitative Analytical Performance is Translational for Clinical Utility of Cell-Free Tumor DNA Diagnostics 2Highly Sensitive and Quantitative Analytical Performance is Translational for Clinical Utility of Cell-Free Tumor DNA Diagnostics 3Highly Sensitive and Quantitative Analytical Performance is Translational for Clinical Utility of Cell-Free Tumor DNA Diagnostics 4Guardant Health Named a 2015 Technology Pioneer by World Economic Forum 2The University of Kansas Medical Center and The University of Kansas Cancer Center Select iLab Solutions Web-based Software to Streamline Operations 2The University of Kansas Medical Center and The University of Kansas Cancer Center Select iLab Solutions Web-based Software to Streamline Operations 3
... , , , For ultrafast purification of up to 750 g ... Features and benefits , , ... ultrapure DNA , ... No risk of DNA pellet loss during precipitation , ...
... , For transfection of cells with siRNA in RNAi procedures, , , ... , , , , , ... Quick and easy setup , Ready-to-use reagent , ... , , Principle , , , , , ...
... , , , , , For fast and efficient multiplex PCR , ... , , Kit Contents ... Storage and Stability , Technical Assistance , ... Limitations , Product Warranty and Satisfaction Guarantee , ...
Cached Biology Technology:HiSpeed Plasmid Kits 2TransMessenger Transfection Reagent 2TransMessenger Transfection Reagent 3QIAGEN Multiplex PCR Handbook 2QIAGEN Multiplex PCR Handbook 3QIAGEN Multiplex PCR Handbook 4QIAGEN Multiplex PCR Handbook 5QIAGEN Multiplex PCR Handbook 6QIAGEN Multiplex PCR Handbook 7QIAGEN Multiplex PCR Handbook 8QIAGEN Multiplex PCR Handbook 9QIAGEN Multiplex PCR Handbook 10QIAGEN Multiplex PCR Handbook 11QIAGEN Multiplex PCR Handbook 12QIAGEN Multiplex PCR Handbook 13QIAGEN Multiplex PCR Handbook 14QIAGEN Multiplex PCR Handbook 15QIAGEN Multiplex PCR Handbook 16QIAGEN Multiplex PCR Handbook 17QIAGEN Multiplex PCR Handbook 18QIAGEN Multiplex PCR Handbook 19QIAGEN Multiplex PCR Handbook 20QIAGEN Multiplex PCR Handbook 21QIAGEN Multiplex PCR Handbook 22QIAGEN Multiplex PCR Handbook 23QIAGEN Multiplex PCR Handbook 24QIAGEN Multiplex PCR Handbook 25QIAGEN Multiplex PCR Handbook 26QIAGEN Multiplex PCR Handbook 27QIAGEN Multiplex PCR Handbook 28QIAGEN Multiplex PCR Handbook 29QIAGEN Multiplex PCR Handbook 30QIAGEN Multiplex PCR Handbook 31QIAGEN Multiplex PCR Handbook 32QIAGEN Multiplex PCR Handbook 33
... CyScribe GFX Purification Kit, 25 ... CyDye labeled cDNA probesProvides efficient removal ... from labeling reactions with superior yields ... for the purification of cDNA labeled ...
Detects caspase activation by flow cytometry....
Apoptosis Detection Systems and Reagents...
Barcoded Slides, 5 Packs of 5 Slides (25/Case)...
Biology Products: