# data[].attributes.headline
  Two common vaporizing inlets used in GC are split inlet and splitless inlet. Split injection is used to get rapid volatilization and homogenous mixing with the carrier gas. It is suitable for analysis of high concentrated samples (in ppm level or higher). Sample was introduced into the column by adjusting the relative flow of the carrier gas into the column and to waste through purge vent valve (split vent flow). This is achieved by setting the split ratio (ratio of the split vent flow to the column flow). In split mode, most of the sample will pass out the split vent to atmosphere and only small proportion of sample will flow into the column. At the bottom of the injection port a small part of this mixture will transfer to the column, while the bulk of mixture will leave the inlet via split vent/purge vent valve.

# data[].attributes.subject
  Two common vaporizing inlets used in GC are split inlet and splitless inlet. Split injection is used to get rapid volatilization and homogenous mixing with the carrier gas. It is suitable for analysis of high concentrated samples (in ppm level or higher). Sample was introduced into the column by adjusting the relative flow of the carrier gas into the column and to waste through purge vent valve (split vent flow). This is achieved by setting the split ratio (ratio of the split vent flow to the column flow). In split mode, most of the sample will pass out the split vent to atmosphere and only small proportion of sample will flow into the column. At the bottom of the injection port a small part of this mixture will transfer to the column, while the bulk of mixture will leave the inlet via split vent/purge vent valve.

# data[].attributes.body
Splitless injection mechanism has same principle as split injection except the purge valve is closed during the injection; by transferring nearly the entire injected sample into the capillary column, rather than venting most of it through the purge vent as split mode. Injection using the splitless inlet is the most common means for improving detection limit and is currently the most commonly used technique for trace analysis.

# data[].attributes.body
1.purgevalve is closed
2. Transfering nearly the entire injected sample into capillary column
3.for improving detection  limit

# data[].attributes.body
-for concentrated samples (usually in ppm level or higher)
-introduction of samples: by adjusting the relative flow of carrier gas into the column and to waste through a purge valve (split vent flow)
-this is achieved by setting the split ratio (ratio of split vent flow to the column flow)

# data[].attributes.body
-for concentrated samples (usually in ppm level or higher)
-

# data[].attributes.body
-for concentrated samples (usually in ppm level or higher)

# data[].attributes.body
-for concentrated samples (usually in ppm level or higher)

# data[].attributes.body
-for concentrated samples (usually in ppm level or higher

# data[].attributes.body
-for concentrated samples (usually in ppm level

# data[].attributes.body
-for concentrated samples (usually in pp

# data[].attributes.body
-for concentrated samples (usually i

# data[].attributes.body
-for concentrated samples (usuall

# data[].attributes.body
-for concentrated samples (usually

# data[].attributes.body
-for concentrated samples

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PTV is known as programmed-temperature vaporization inlet. It has few advantages such as it allows cold injection (like on-column inlets), fast rate for temperature
programming and pre-separation of target analytes from other components of the sample. By using PTV, the sample is first being injected into the chamber and the chamber is then heated to desorb the sample into capillary column.

# data[].attributes.body
Aishah