Moisture analysis retention

The qualitative analysis of retention behaviour in liquid chromatography has now become possible. Quantitative retention-prediction is, however, still difficult the prediction of retention time and the optimization of separation conditions based on physicochemical properties have not yet been completely successful. One reason is the lack of an ideal stationary phase material. The stationary phase material has to be stable as part of an instrument, and this is very difficult to achieve in normal-phase liquid chromatography because the moisture in organic solvents ages the silica gel. 

In many cases, HSI may replace NIR spectrometers to compute concentrations of various compounds or to estimate quality parameters of agricultural and food products. HSI can be used to assess properties as diverse as oil content, moisture, flour yield, softness, sucrose solvent retention capacity, and alpha-amylase activity in grains [26-28] sugar content and maturity of fruits like apple or banana [29-31] drip loss, water-holding capacity, color, pH, and sensory properties of meat [32-39] analysis of mixtures to detect the presence of substances such as, in forages [40], or the concentration of n-3 polyunsaturated fatty acids in designer eggs [41]. 

Soil mechanics is the application of the laws of Mechanics and Hydraulics to problems dealing with soiKref. 1). The seepage flow through the unsaturated soil is an important problem because the soil mass behavior depends on the interactions between the soil grains and pore water. The parameters for the seepage analysis require moisture retention as well as hydraulic conductivity, since hydraulic conductivity depends on water saturation which also relates to capillary suction. The moisture retention is usually described by the relation between the water saturation and capillary potential. 

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