The biomonitoring of heavy metal pollution in the wood and leaf chemistry of urban trees in Hong Kong

1999 ◽  
Author(s):  
Ching-yee, Christina Ho
Keyword(s):  
Heavy Metal ◽  
Hong Kong ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Urban Trees ◽  
Leaf Chemistry

scholarly journals Environmental Status of a City Based on Heavy Metal Content of the Tree-Rings of Urban Trees: Case Study at Szeged, Hungary

2019 ◽  
Vol 12 (1-2) ◽  
pp. 13-22
Author(s):  
Tímea Kiss ◽  
István Fekete ◽  
Ibolya Tápai
Keyword(s):  
Heavy Metal ◽  
Tree Rings ◽  
Environmental Conditions ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Metal Content ◽  
Heavy Metal Content ◽  
Urban Trees ◽  
Dust Particles ◽  
The Town

Abstract Urban vegetation, especially urban trees could act as ecological archives, as they reflect various elements of their environment. The main aim of the study is to evaluate the spatial and temporal variations of environmental conditions in the city of Szeged (Hungary) based on long-term monitoring of the heavy metal content of tree-rings (soft wood). In general, the living conditions of the urban trees (and other organisms as well) at Szeged was the worst in 2001/05, when the heavy metal pollution was the greatest, therefore the biomass production of the sampled trees decreased. Fortunately, the environmental conditions became better, only there are some points in the industrial area, where the heavy metal pollution of the environment is gradually increases. The temporal change in lead pollution (considerable decline in 2013/17) could be explained by the obligatory usage of lead-free petrol since 1999 and the diversion of through-traffic from the town (2011). The introduction of unleaded petrol had delayed favourable results, as the dust particles containing lead probably circulated in the air for a while before they were gradually become fixed in the soil or they were washed out from the town during heavy rains. The cadmium pollution also declined after the traffic diversion, as it is connected to the usage of brake-linings. Whilst the lead and cadmium content of the tree-rings decreased during the studied decades, the trees accumulated increasing amount of zinc throughout the studied periods, as this element could be up-taken from the ground-water, as the larger the canopy of a tree the denser and deeper its root system is.

Heavy metal pollution in roadside urban parks and gardens in Hong Kong

1987 ◽  
Vol 59 ◽  
pp. 325-328 ◽  
Author(s):  
N.F.Y. Tam ◽  
W.K. Liu ◽  
M.H. Wong ◽  
Y.S. Wong
Keyword(s):  
Heavy Metal ◽  
Hong Kong ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Urban Parks

Potential of urban trees for mitigating heavy metal pollution in the city of Novi Sad, Serbia

2019 ◽  
Vol 191 (10) ◽  
Author(s):  
Amela Greksa ◽  
Branka Ljevnaić-Mašić ◽  
Jasna Grabić ◽  
Pavel Benka ◽  
Vasa Radonić ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Urban Trees ◽  
Novi Sad ◽  
The City

Statistical Analsysis to Evaluate Heavy Metal Pollution in the Air Obatained by Moss Technique in Hanoi and its Surrounding Region

2019 ◽  
Vol 29 (3SI) ◽  
pp. 411
Author(s):  
N. H. Quyet ◽  
Le Hong Khiem ◽  
V. D. Quan ◽  
T. T. T. My ◽  
M. V. Frontasieva ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Statistical Analysis ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Principal Component ◽  
Multivariate Statistical ◽  
Five Factors ◽  
Heavy Metal Elements ◽  
Surrounding Areas ◽  
Potential Pollution

The aim of this paper was the application of statistical analysis including principal component analysis to evaluate heavy metal pollution obtained by moss technique in the air of Ha Noi and its surrounding areas and to evaluate potential pollution sources. The concentrations of 33 heavy metal elements in 27 samples of Barbula Indica moss in the investigated region collected in December of 2016 in the investigated area have been examined using multivariate statistical analysis. Five factors explaining 80% of the total variance were identified and their potential sources have been discussed.

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