Relationship between soil test methods and uptake of copper and zinc by grasses on polluted soils
作者:
R. S. Singh,
R. P. Singh,
R. K. Rai,
H. P. Agrawal,
期刊:
Communications in Soil Science and Plant Analysis
(Taylor Available online 1994)
卷期:
Volume 25,
issue 9-10
页码: 1313-1320
ISSN:0010-3624
年代: 1994
DOI:10.1080/00103629409369117
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
A study was conducted to evaluate the suitability of selected analytical methods for correlating the uptake of copper (Cu) and zinc (Zn) by grasses on soils exposed to sewage and industrial effluents and automobile exhausts. Samples of soils and selected grasses, such asCynodon dactylonandCyperus rotundusgrowing on these polluted soils, were taken and analysed for their Cu and Zn contents by extraction. Four extractants, 4M HNO3, DTPA‐CaCl2(pH 7.3), 1N NH4OAc (pH 4.8), and 0.001N HCl were used. The results revealed that for the extraction of Cu and Zn from these soils, the efficiency of extraction was in the order of 4M HNO3> 1N NH4OAc > DTPA‐CaCl2> 0.001N HCl. Significant positive correlationns were found between all the extracting methods and the Cu and Zn uptake by the grasses. The DTPA‐CaCl2and 0.001N HCl extractants were found to be most promising extractants for the determination of Cu and Zn in the polluted soil in view of their high statistical relationship with the uptake of these elements by the grasses.
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