Heavy metal concentrations and its impact on soil microbial and enzyme activities in agricultural lands around ship yards in Chattogram, Bangladesh

The study was conducted to investigate the soil quality including heavy metal concentrations in agricultural lands around dyeing, glass and textile industries at Tangail district of Bangladesh. A total of nine samples, three samples from each industrial site, were collected at a depth of 0-15 cm with an interval of 10 m from each point of the agricultural lands adjacent to selected industries for analyzing the soil chemical properties such as pH, OM, total N, available P and S including heavy metals (Pb, Cd, Ni, Cu and Cr) concentrations. The study found soil pH of 6.4 and 6.1 around textile and glass industry, respectively, while comparatively lower pH (4.4) was observed around dyeing industry. Comparatively higher levels of OM, total N, available P and S were found in soil around dyeing industry, whereas lower levels of OM and available S were observed around textile industry. The Cu, Pb and Cr were the dominant heavy metal around dyeing, glass and textile industry, respectivelyJ. Environ. Sci. & Natural Resources, 10(2): 109-116 2017

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Heavy metal concentrations and enzyme activities in soil from a contaminated Korean shooting range

Journal of Bioscience and Bioengineering ◽

10.1016/s1389-1723(02)80217-1 ◽

2002 ◽

Vol 94 (5) ◽

pp. 406-411 ◽

Cited By ~ 85

Author(s):

In-Sook Lee ◽

Ok Kyung Kim ◽

Yoon-Young Chang ◽

Bumhan Bae ◽

Hyun Hee Kim ◽

...

Keyword(s):

Heavy Metal ◽

Enzyme Activities ◽

Metal Concentrations ◽

Shooting Range ◽

Heavy Metal Concentrations

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Effects of heavy metal concentrations on biological activity of soil micro-organisms

Plant Soil and Environment ◽

10.17221/4131-pse ◽

2011 ◽

Vol 49 (No. 7) ◽

pp. 321-326 ◽

Cited By ~ 63

Author(s):

M. Šmejkalová ◽

O. Mikanová ◽

L. Borůvka

Keyword(s):

Heavy Metal ◽

Microbial Activity ◽

Soil Microbial Activity ◽

Soil Microflora ◽

Significant Inhibition ◽

Metal Concentrations ◽

Heavy Metal Concentrations ◽

Soil Microbial ◽

Cadmium Lead ◽

Micro Organisms

The distribution of cadmium, lead and zinc in exchangeable, organic, and 2M HNO3-extractable fractions as well as the effect of heavy metal concentrations on soil microflora was investigated. Six sampling transects were chosen in theLitavkaRiveralluvium in 1999–2001. Concentrations of all metals increased with decreasing distance from the source of contamination. The concentrations of Cd and Zn in exchangeable fraction were higher than in organically bound fraction, a reverse trend was found in Pb speciation. All measured parameters of soil microbial activity were affected by heavy metal concentrations. The decrease in CFU was most significant in the case of oligotrophic bacteria and spore-forming bacteria. Significant inhibition of C-biomass occurred in soils highly contaminated by heavy metals. The Cbiomass:Cox ratio decreased with increasing soil pollution. Generally, the values of enzymatic activities were highest in the soil above the source of contamination and they were decreased as approaching the source of contamination. Our results demonstrate that several parameters of microbial activity could be used as good indicators of increasing concentrations of Cd, Pb, and Zn in soil.

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