A new method for the estimation of total dissolved salts in saturation extracts of soils from electrical conductivity
A new method for the estimation of total dissolved salts in saturation extracts of soils from electrical conductivity
复制标题
一种根据电导率估算土壤饱和提取物中总溶解盐的新方法
DOI：
10.1111/j.1365-2389.1994.tb00496.x
复制
发表时间：
1994
影响因子：
4.2
通讯作者：
P. Martinez
中科院分区：
文献类型：
--
作者：
M. Simón;O. Cabezas;I. García;P. Martinez
总结
我们已经确定了电导率（Ee）和总溶解盐（S）的饱和提取物从巴扎盆地（省格拉纳达，西班牙东南部）的39个土壤样品。Ee的范围为2.8至110 dS m−3，S的范围为2至444 8 dm−3。
S和Ee之间的关系不是线性的。当饱和提取物用逐渐大量的蒸馏水稀释时，其电导率（Eec）用以下公式计算：
其中艾德和Ew是稀释浸提液和蒸馏水的电导率，f是稀释因子，S和Eec之间的关系趋于线性。
当计算电导率（艾德）在0.1和0.3 dS m −1（E*ec）之间的稀释液的Eec值时，S（mg dm−3）和Eec（dS m − 1）之间的线性相关系数最高。回归方程为S= 490 E*ec，r2= 0.999。该关系式可用于所有饱和浸提液，无论存在的离子的浓度和类型如何。
Summary
We have determined electrical conductivity (Ee) and total dissolved salts (S) in saturation extracts from 39 soil samples from the Baza basin (Province of Granada, south-east Spain). Ee ranged from 2.8 to 110dS m−3, and S from 2 to 444 8 dm−3.
The relationship between S and Ee was not linear. When the saturation extracts were diluted with progressively larger quantities of distilled water and their electrical conductivity calculated (Eec) with the equation
where Ed and Ew are the conductivity of the diluted extract and the distilled water and f is the dilution factor, the relationship between S and Eec tended to become linear.
The highest linear correlation coefficient relating S (mg dm−3) and Eec (dS m−1) was reached when Eec, values were calculated for dilutions with a conductivity (Ed) between 0.1 and 0.3 dS m−1 (E*ec). The regression equation was S= 490 E*ec with r2= 0.999. This relationship can be used in all saturation extracts, regardless of the concentration and type of ions present.