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The mobile phase composed of acetonitrile water (75:25).
The mobile phase composed of 45% methanol and 55% water.
An additional phase composed of dense calcium phosphate nanospheres was found in all periods and investigated.
The LC analyses were carried out using a mobile phase composed of acetonitrile, 2-propanol and water, under gradient elution.
Nitric acid is the internal aqueous phase and is encapsulated in organic membrane phase composed of DEHPA kerosene-SPAN80.
The used mobile phase composed of 0.1 M phosphate buffer and methanol in the ratio of 40 60, v/v at pH 7.0.
The plates were developed in a chromatographic jar containing mobile phase composed of cyclohexane/ethylacetate/glacial acetic acid in ratios of 20 10 1.
Mobile phase composed of two solvents: A is HPLC grade water, and B is acetonitrile mixed in the ratio 1 1.
Mobile phase composed of 5 mM Ammonium formate, pH 3.0: methanol (20 80 v/v), with 0.4 mL/min flow-rate.
First, it was demonstrated that a classical mobile phase composed of CO2 methanol 90100 (v/v) was suitable to obtain great nebulization efficiency.
Among different sorbents, ABS Elut-NEXUS phase, composed of polystyrene cross-linked with 50% divinyl benzene and poly methyl methacrylate), provided the best results.
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