Correlation of the Fluorine Content in Soil and Vegetables from Luoyang Suburban Vegetable Fields
ZHU Shu-fa et al (School of Chemical Engineering, Henan University of Science and Technology, Luoyang, Henan 471003)
[Objective] The research aimed to discuss the correlation of the fluorine content in soil and vegetables from Luoyang suburban vegetable fields. [Method] By using ion selective electrode method, the content of fluorine in soils and vegetables was analyzed. [Result] The soils have been polluted by fluorine in the study areas. Fluorine concentration in vegetables exceeded the national food sanitation standard (1 mg/kg). [Conclusion] The content of fluorine has not shown a correlation between whole fluorine and water-soluble fluorine in soils. But it has presented a significant correlation between the water-soluble fluorine in soil and the fluorine in vegetables.