Sentence examples for geochemical values from inspiring English sources

There is strong correlation between top soil and sub soil geochemical values.

Holdout validation is used to assess: (i) the optimum number of samples for calculating local GM values, and (ii) the optimum scale at which to group data when using linear regression analysis to estimate GM soil ABCs from local sediment geochemical values.

These findings provide baseline geochemical values for common and parallel geological domains in the eastern region of Cameroon.

This index was calculated using Eq. (1) proposed by Müller (1969): {text{I}}_{text{geo}} =, log_{2} frac{{C_{n} }}{{1.5 times B_{n} }} (1 where Cn is the sediment metal concentration; A is the constant for modifying the fluctuation of the background value caused by lithological movement, usually 1.5 (Bhuiyan et al. 2010); and Bn is the geochemical background value of the metal.

It is computed using the following relationship: I geo = log 2 C n 1.5 B n, (2 where C n is the measured concentration of the element in the sediment samples, and B n is the geochemical background value in the Earth's crust (Lide [2005]).

{mathrm{I}}_{{{mathrm{geo}}}} = log_{2} frac{{{mathrm{C}}_{{mathrm{n}}} }}{{1.5{mathrm{B}}_{{mathrm{n}}} }}varvec (1 where Igeo is geoaccumulation index of the metal; Cn is the measured concentration of the element in the sample and Bn is the geochemical background value.

It is calculated using the following relationship: (2) I geo = log ⁡ 2 (C n 1.5 B n ), where C n is the mean concentration of the element in the examined soil and B n is the geochemical background value in the crust.

However, groundwater and saline springs in the region presents a wider range of geochemical and isotopic values that are not always distinguishable from OSPW.

The Mullers geochemical index (Igeo) values ranged from 8.02 9.67 and 7.32 7.90 for both Ankobra and Tano River basin, respectively.

The trace element concentrations and Sr isotope data obtained for reference rock material Geological Survey of Japan JB-3 (Table 1) were consistent with the reported values (Geochemical reference samples database of Geological Survey of Japan: http://riodb02.ibase.aist.go.jp/geostand/).jp/geostand/

Environmental conditions (for example, temperature, humidity, pH value, geochemical properties of soil) or use of different sample treatments may affect the condition of the ancient DNA.