有机物料对土壤中水溶性氟环境效应的影响

The environmental effect of organic materials on soil soluble fluorine

土壤是固、液、气三相共存体,氟在土-水-植物、动物界面的转化可通过土壤水溶性氟含量表征。试验选用典型贵州黄壤和石灰土,运用有机质进行土壤污染修复的机理,通过向模拟高氟污染土壤中添加有机物料泥炭和风化煤,采用两因素最优设计,研究两种有机物料对土壤中水溶性氟含量的影响。结果表明,泥炭和风化煤都能降低土壤中水溶性氟含量,且泥炭的处理效果更好,最佳添加量是1.258g·kg-1。同时表明,黄壤和石灰土环境下氟形态转化的化学机理不同,运用有机质修复氟污染黄壤添加适量就可达到理想效果,而氟污染石灰土还存在其它更直接有效的方法改变氟在石灰土环境下的形态及其活性。

Fluorine transformation in soil-water-plant and animal system can be represented by soil soluble fluorine content. This research was based on mechanism that organic material has reconditions action on soil pollution. We chose yellow soil and calcareous soil in Guizhou province, peat coal and gentle breeze coal were added into simulated high fluorine polluted soil to study the effect of organic material on soil soluble fluorine content using the qualified design. The results indicate that both peat coal and gentle breeze coal can decrease soluble fluorine content in soil, while the reconditions action of peat coal was better than gentle breeze coal and the optimum added level of peat coal was 1.258 g·kg^-1. It was found that chemistry mechanism of fluorine conformation transformation were different in yellow soil and calcareous soil circumstance. By applying suffice quantum of organic material can be reconditioned and achieve ideal effect in fluorine polluted yellow soil. Whereas by changing configuration and activity of fluorine was necessary in fluorine polluted calcareous soil circumstance.