Answer :
Final answer:
To detect and identify concentrations of benzene, toluene, and xylene in a mixture, gas chromatography coupled with a suitable detector such as flame ionization detector (FID), photoionization detector (PID), or universal gas detector (UGD) can be used.
Explanation:
To detect and identify concentrations of benzene, toluene, and xylene in a mixture, gas chromatography is a commonly used method. Gas chromatography separates the individual compounds based on their different retention times. This technique involves injecting the mixture into a chromatographic column, where the compounds interact with the stationary phase and the mobile phase. The compounds with higher affinity for the stationary phase will have longer retention times, allowing for their separation.
Gas chromatography can be coupled with different detectors to identify and quantify the compounds. One option is the flame ionization detector (FID), which is commonly used for hydrocarbon analysis. FID detects compounds by measuring the ionization of carbon atoms in the sample. Another option is the photoionization detector (PID), which is suitable for compounds with low ionization potentials. PID uses ultraviolet light to ionize the compounds, allowing for their detection.
Additionally, a universal gas detector (UGD) can be used for the detection of benzene, toluene, and xylene. UGD is a versatile detector that can be used for a wide range of compounds. It operates based on the principle of thermal conductivity, where the thermal conductivity of the sample gas is compared to that of a reference gas.
Therefore, to detect and identify concentrations of benzene, toluene, and xylene in a mixture, gas chromatography coupled with a suitable detector such as FID, PID, or UGD can be employed.
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Final answer:
To detect and identify concentrations of benzene, toluene, and xylene in a mixture, gas chromatography coupled with a suitable detector such as flame ionization detector (FID), photoionization detector (PID), or universal gas detector (UGD) can be used.
Explanation:
To detect and identify concentrations of benzene, toluene, and xylene in a mixture, gas chromatography is a commonly used method. Gas chromatography separates the individual compounds based on their different retention times. This technique involves injecting the mixture into a chromatographic column, where the compounds interact with the stationary phase and the mobile phase. The compounds with higher affinity for the stationary phase will have longer retention times, allowing for their separation.
Gas chromatography can be coupled with different detectors to identify and quantify the compounds. One option is the flame ionization detector (FID), which is commonly used for hydrocarbon analysis. FID detects compounds by measuring the ionization of carbon atoms in the sample. Another option is the photoionization detector (PID), which is suitable for compounds with low ionization potentials. PID uses ultraviolet light to ionize the compounds, allowing for their detection.
Additionally, a universal gas detector (UGD) can be used for the detection of benzene, toluene, and xylene. UGD is a versatile detector that can be used for a wide range of compounds. It operates based on the principle of thermal conductivity, where the thermal conductivity of the sample gas is compared to that of a reference gas.
Therefore, to detect and identify concentrations of benzene, toluene, and xylene in a mixture, gas chromatography coupled with a suitable detector such as FID, PID, or UGD can be employed.
Learn more about detection and identification of benzene, toluene, and xylene in a mixture here:
https://brainly.com/question/30829933
#SPJ14
