FLUORINE IN SOILS
FLUORINE IN SOILS
复制标题
土壤中的氟
DOI：
10.1097/00010694-194605000-00001
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发表时间：
1946
期刊：
影响因子：
--
通讯作者：
Glen Edgington
中科院分区：
文献类型：
--
作者：
W. O. Robinson;Glen Edgington
给出了不同质地、母质和地理分布的代表性土壤的 30 个剖面、总共 137 个样品的氟含量。在含有磷酸盐岩的田纳西州土壤中，氟含量从微量到 7,070 ppm 不等。表层土壤的平均值为 292 ppm。一般来说，氟含量随着土壤深度的增加而增加。氟在胶体物质中相当集中。氟含量最高的土壤中的大部分氟以磷灰石的形式存在。然而，有证据表明，一般来说，普通土壤中氟的主要来源是云母粘土。一般来说，土壤中的磷和氟含量之间不存在相关性，其中氟主要不是以磷灰石形式存在。结果表明，可能存在于土壤中的 6 个云母粘土样品的氟含量范围为 300 至 7400 ppm，平均为 3730 ppm。其中奥陶系膨润土含氟量最多。以过磷酸钙形式添加到土壤中的大部分氟被较重的质地土壤保留。粗糙的沙质土壤保留较少的添加氟。以过磷酸钙形式添加氟似乎不会显着增加植物的氟含量。给出了在已知氟含量的土壤上生长的 28 个植被样本的氟含量。需要指出的是，这些样品中受到氟污染的可能性很小。 « less
The fluorine content of 30 profiles, 137 samples in all, of representative soils of varied texture, parent material, and geographic distribution are given. This fluorine content varies from a trace to 7,070 ppm in an unusual Tennessee soil containing phosphate rock. The average for surface soils is 292 ppm. In general, the fluorine content increases with the depth of the soil. Fluorine is considerably concentrated in the colloidal matter. Much of the fluorine in soils highest in fluorine is in the form of apatite. Evidence, however, is presented to show that, in general, the main source of fluorine in the ordinary soil is the micaceous clays. In general, there is no correlation between the phosphorus and fluorine contents of soil where the fluorine present is not mainly in the form of apatite. It is shown that six samples of micaceous clays, which probably occur in soil, have fluorine contents ranging from 300 to 7400 ppm averaging 3730 ppm. One Ordovician bentonite contains the maximum quantity of fluorine. Much of the fluorine added to the soil in the form of superphosphate is retained by the heavier textured soils. Coarse, sandy soils retain less of the added fluorine. Added fluorine in themore » form of superphosphate does not appear to increase significantly the fluorine content of plants. The fluorine contents of 28 samples of vegetation grown on a soil of known fluorine content are given. It is pointed out that there is very little chance of fluorine contamination in these samples.« less