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[求助] 色谱分析乳酸甲酯 乳酸 甲醇 水 ,如何确定色谱分析条件

色谱分析乳酸甲酯 乳酸  甲醇 水 ,如何确定色谱分析条件,液相色谱好,还是气相色谱好,如何从文献中看出我需要的色谱条件,使用色谱分析时,分析条件除了进样温度  检测室温度 升温方法 载气,还有什么呢,
Sample Analysis. The samples were analyzed using a
Hewlett-Packard (6890) gas chromatograph (GC) equipped
with series connected thermal conductivity and flame
ionization detectors so that water and the other components
could be detected in the same run. The GC column
was a 25 m  0.25 mm bonded phase fused silica capillary
column. Helium, 99.999% pure, was used as carrier gas.
The injector and detectors were at 503.15 K and 533.15 K,
respectively. The oven was operated at programmed temperature,
from 353 K to 493 K at a rate of 40 K min-1.
1,2-Propanediol was used as internal standard for analysis
of the quaternary samples. The estimated uncertainty in
phase compositions was (0.0005 mole fraction. Quantitative
analysis of monomeric lactic acid in the vapor phase
was also carried out by titration with sodium hydroxide,
using phenolphthalein as the indicator. This method is only
accurate for very weak lactic acid solutions.12
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