MgO,MnO,FeO,Co,Ni and Cr abundances exhibit a negative correlation with SiO2,whereas Al2O3,TiO2 and Na2O exhibit a positive correlation with SiO2.Total REE concentration,in the range from 20.59×10-6 to 147.80×10-6,increases from ultramafic to dioritic rocks.
The density and the concentration of carbazole of the crude oil decrease gradually from the deep to the shallow,while some other parameters,such as content of saturated hydrocarbon,C21-/C22+,C21+22/C28+29,reset/regular steranes,carbon isotope and ratio of gas to oil,increase gradually from the deep to the shallow. These varying tendences in vertical were due to migration fractionation from the bottom to the top.
The result of the factor analysis indicate that Mg2+ ,Na+ , Cl-, SO42-and K+ derive from both natural processes and external pollution sources. The industrial pollution source represented by COD also has some influence on the concentration of Cl-, SO42-and K+ in groundwater.
Maximum absorption wavelength was elected,as 640nm. The chromogrnic acidity of hydrochloric acid is 0.24 mol/L~1.44 mol/L. Beer's law is obeyed in the range of 0 μg/mL~1.6 μg/mL of rare earth concentration.
② The best craft parameters and craft conditions for Gaojiawang acidified palygorskite organising modification is: WD-51 concentration 2.0%(wt%), modification temperature 120 ℃ , and modification time 60 mins, adopting iso-propyl alcohol as thinner of WD-51.
The sedimentation mechanism of the gypsum is that the SO_4~2- which come from the PTB convulsion and the Ca~2+ which come from seawater are combined in CaSO_4 if their concentration product overruns its state of equilibrium.