Volume 11, Issue 41 (fall 2007)
2007, 11(41): 43-51 |
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N. Mirghaffari, H. Shariatmadari. Fluoride Distribution in Groundwater, Soil and Some Crops in Isfahan Region . Journal of Crop Production and Processing 2007; 11 (41) :43-51
URL: http://jcpp.iut.ac.ir/article-1-725-en.html
URL: http://jcpp.iut.ac.ir/article-1-725-en.html
Abstract: (9233 Views)
Concentration of soluble fluoride in groundwater, soil, and some crops in Isfahan region was determined by Ion Selective Electrode (ISE) method. The mean fluoride concentration of water samples in the study area was 0.3 and 0.05 mg L-1 in the spring and summer, respectively. These values are in an acceptable limit for irrigation, whereas for drinking water, they are in deficiency range. The average and maximum concentrations of soluble fluoride in soil samples were 1.0 and 3.2 mg kg-1, respectively. In general, the spatial distribution of fluoride in soils showed that fluoride content around major industrial centers such as Isfahan Steel Factory, Mobarakeh Steel Co., and Isfahan oil refinery was higher than other sites. The minimum and maximum fluoride contents of crops were observed in alfalfa as 0.2 and in corn as 4.2 mg kg-1, respectively. Tomato had the highest mean concentration of fluoride as 3.6 mg kg-1. The fluoride concentration in plants positively correlated with the fluoride concentration in irrigation water and soil (P < 0.01) and negatively correlated with cation exchange capacity of soil (P < 0.05).
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