JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Concentration Dependent Effect of Heavy Metals on Soil Carbon Mineralization
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Concentration Dependent Effect of Heavy Metals on Soil Carbon Mineralization
Walpola, Buddhi Charana; Yoon, Min-Ho;
  PDF(new window)
 Abstract
The present laboratory investigation was conducted to assess the effect of heavy metals on carbon mineralization. Soil was treated with three concentrations (50, 100 and soil) of two heavy metals (Cd and Zn) in a factorial combination of treatments replicated four times. Determination of carbon mineralization was carried out at 3, 7, 14, 21, 28, 42 and 56 days after metal treatments.. The amount of -C released from heavy metal treated soils was found to be decreased at an increasing rate during the first 28 days, followed by slow release as incubation progressed. The total amounts of -C released were 448, 382 and soil respectively for soils treated with 50, 100 and soil of Zn. The corresponding figures for Cd treated soils were 406, 354 and soil implying that dose-dependent reduction in cumulative -C released from soils. The inhibition of carbon mineralization was found to be high in Cd treated soils than that of Zn treated. Therefore, tolerance and adaptation of the microbial community is likely to be related to the concentration and the type of metal. According to the results, carbon mineralization can be considered as possible indicator of soil pollution by means of heavy metals.
 Keywords
Heavy metals;Incubation;Carbon mineralization;Soil pollution;
 Language
English
 Cited by
 References
1.
Anderson, J.P.E. 1982. Soil respiration. In: page A. L., R. H. Miller and D. R. Keeney (eds) Methods of soil analysis. Part 2, 2nd edn. (Agronomy monograph no. 09) American Society of Agronomy and Soil Science Society of America, Madison, Wis. Pp 837-871.

2.
Brookes, P. C. 1995. The use of microbial parameters in monitoring soil pollution by heavy metals. Biol. Fertil. Soils. 19:269-279. crossref(new window)

3.
Burkhardt C., H. Insam, T. C. Hutchinson, and H. H. Reber. 1993. Impact of heavy metals on the degradative capabilities of soil bacterial communities. Biol. Fertil. Soils. 16:154-156. crossref(new window)

4.
Gazso, L.G. 2001. The key microbial processes in the removal of toxic metals and radionuclides from the environment. (a review) Cent. Eur. J of Ocuup. Environ. Med. 7:178-185.

5.
Kao, P.H., C.C. Huang, and Z.Y. Hseu. 2006. Response of microbial activities to heavy metals in a neutral loamy soil treated with bio solid. Chemosphere. 64:63-70. crossref(new window)

6.
Mapa, R.B., S. Somssiri, and S. Nagarajah. 1999. Soils of the wet zone of Sri Lanka. Soil Sci. Soc. SL. Sri Lanka. 1:23-92.

7.
Min Lio, L. Yun-kuo, Z. Xiao-min, and H. Chang-yong. 2005. Toxicity of cadmium to soil microbial biomass and its activity: Effect of incubation time on Cd ecological dose in a paddy soil. J. Zhejiang Univ. Sci. B. 6:324-330.

8.
Nwachukwu, O.I. and I.D. Pulford. 2011. Microbial respiration as an indication of metal toxicity in contaminated organic materials and soil. J. Hazard. Mater. 185:1140-1147. crossref(new window)

9.
Nwuche, C.O. and E.O. Ugoji. 2008. Effects of heavy metal pollution on the soil microbial activity. Int. J. Environ. Sci. Tech. 5:409-414. crossref(new window)

10.
Panabokke, C.R. 1980. Handbook of the soils of Sri Lanka. J. Soil Sci. Soc. 2:83-85.

11.
SAS Institute. 1988. SAS/STAT user's guide, Release 6.03. SAS Institute, Cary, North Carolina, USA.

12.
Ultra, Jr V. U., A. Yano, K. Iwasaki, S. Tanaka, Kang-YuMei, and K. Sakurai. 2005. Influence of chelating agent addition on copper distribution and microbial activity in soil and copper uptake by brown mustard (Brassica juncea). Soil Sci. Plant Nutr. 51:193-202. crossref(new window)

13.
Utgikar, V.P., N. Chaudhary, A. Koeniger, H.H. Tabak, J.R. Haines, and R. Govind. 2004. Toxicity of metals and metal mixtures: Analysis of concentration and time dependence for zinc and copper. Water res. 38:3651-3658. crossref(new window)

14.
Walpola, B.C., K.K. I.U. Arunakumara, and M.H. Yoon. 2011. Evaluation of nitrogen mineralization in soil polluted by zinc and cadmium. Korean J. Soil Sci. Fert. 44:559-564. crossref(new window)

15.
Yao, H.Y., Z.L. He, M.J. Wilson, and C.D. Campbell. 2000. Microbial biomass and community structure in a sequence of soils with increasing fertility and changing land use. Microb. Ecol. 40:223-237.