Assessment of heavy metal uptake by corn seeding on serpentine soil amended with different chemical fertilizers
| Autor: | Ming-Fang Lee, 李明芳 |
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| Rok vydání: | 2009 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 97 Serpentinite is one of ultramafic rocks. The serpentinitic soils are characterized as following: (1) Ca/Mg < 1.0, soils fertility is relatively low, such as low availability of N, P and K and unbalance in nutrition, (2) lithiogenic enrichment of heavy metals like Ni, Cr, Mg, Fe, and Co, (3) talc fiber derived from serpentinitic rocks is easily released into the environment to cause the damage of ecological and human health. In this study, three serpentinitic areas having a total of seven soils, in Coastal Range of eastern Taiwan. They are (Wm1 and Wm2), (St3 and St4), and (Ta2, Ta3, and Ta4). The aims of this study are apply DTPA extraction and pot experiments (amended with different chemical fertilizers) to explore the soils characteristics, and heavy metals, to assess their effect grow on the serpentine soil in the shoot of plant and to accumulate heavy metals. Results show that the amended with different chemical fertilizers in the corn seedling on the different growth number of days relations of the heavy metal concentration, The corn will be longer along with the growth time causes hard, in the shoot of corn were uptake more concentrations of Fe, Mn and Ni. Between the concentrations in shoot of corn and the dry weigh, Fe, Mn and Ni(mg/plant) were increase with the growth time, between the concentration (mg/plant) of Fe have good correlation. next respectively is Ni, Co and Mn. No significant correlation between DTPA extraction of heavy metals and the concentrations of heavy metals in corn absolute absorption capability. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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