Advantages and Disadvantages

The advantages of the splitter are simplicity - for qualitative and semiquantitative work very little can go wrong. Its major disadvantage is discrimination: inhomogeneous mixing of carrier gas and sample and different rates of evaporation and incomplete evaporation of components of different volatility inside the syringe needle and from droplets in the injector body. Other disadvantages include unsuitability for temperature-sensitive and involatile compounds and low sensitivity for trace analysis. Condensation of solvent inside the column, pressure surges on injection and changes in the volumes of carrier and sample gases on moving from injector to oven at different temperatures reduce reproducibility and mean that the actual split ratio is never that calculated from gas flow rates. To minimize errors from these effects, the operating conditions must be kept as constant as possible and internal standards should be used for quantitative analysis. Venting most of a sample to atmosphere may represent a safety hazard.

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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