Asokan, Aparna and Saxena, Mohini and Asokan, Pappu Fungal Ergosterol as an Indicator of Heavy Metal Accumlation in Soil amended with coal ash. Fersenius Environmental Bulletin.

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Based on the results obtained from the lab scale study, pilot scale experiments were conducted on the use of 15- 25 % ie. 300 to 650 MT ha-1 (metric tonnes per hectare of land) of coal ash to increase the agricultural productivity of sandy, silty clay loam and clayey soil of wasteland located at different parts of India. The present work is an attempt to evaluate the contribution of coal ash addition to these soils in terms of heavy metal loading through fungal invasion via ergosterol estimation in se-questering the heavy metals. The ergosterol estimation was done by HPLC. Ergos-terol was eluted at 8 min after injecting of 20 µl of the extract. An increased content of ergosterol with increased concentration of coal ash is noticed, which is influenced by the sample moisture content, thus freeze-dried samples have 25 % more ergosterol content. Statistically signifi-cant results were obtained with freeze-dried soil samples with 25% coal ash addition on sandy soil (p<0.05), while with silty clay loam or clayey soil and 20 % or 15 % coal ash application, respectively, significant results at p<0.05 were obtained with Farm Yard Manure (FYM). Soil amended with coal ash addition showed an increase in concentration of heavy metals and trace elements with higher dose of coal ash treatment.

Item Type: Article
Subjects: Waste-to-Wealth > Agriculture
Depositing User: Mr. B.K. Prasad
Date Deposited: 20 Jan 2014 08:24
Last Modified: 23 Jan 2014 05:58

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