1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
astra-53 [7]
3 years ago
15

Write about injector use in gas chromatography in detail. (don't copy from online sites )​

Chemistry
1 answer:
KatRina [158]3 years ago
8 0

Answer:

Gas chromatography  is a common type of chromatography used in analytical chemistry for separating and analyzing compounds that can be vaporized without decomposition. Typical uses of GC include testing the purity of a particular substance, or separating the different components of a mixture. In preparative chromatography, GC can be used to prepare pure compounds from a mixture

as chromatography is a term used to describe the group of analytical separation techniques used to analyze volatile substances in the gas phase. In gas chromatography, the components of a sample are dissolved in a solvent and vaporized in order to separate the analytes by distributing the sample between two phases: a stationary phase and a mobile phase. The mobile phase is a chemically inert gas that serves to carry the molecules of the analyte through the heated column. Gas chromatography is one of the sole forms of chromatography that does not utilize the mobile phase for interacting with the analyte. The stationary phase is either a solid adsorbant, termed gas-solid chromatography (GSC), or a liquid on an inert support, termed gas-liquid chromatography (GLC).

Introduction

In early 1900s, Gas chromatography (GC) was discovered by Mikhail Semenovich Tsvett as a separation technique to separate compounds. In organic chemistry, liquid-solid column chromatography is often used to separate organic compounds in solution. Among the various types of gas chromatography, gas-liquid chromatography is the method most commonly used to separate organic compounds. The combination of gas chromatography and mass spectrometry is an invaluable tool in the identification of molecules. A typical gas chromatograph consists of an injection port, a column, carrier gas flow control equipment, ovens and heaters for maintaining temperatures of the injection port and the column, an integrator chart recorder and a detector.

To separate the compounds in gas-liquid chromatography, a solution sample that contains organic compounds of interest is injected into the sample port where it will be vaporized. The vaporized samples that are injected are then carried by an inert gas, which is often used by helium or nitrogen. This inert gas goes through a glass column packed with silica that is coated with a liquid. Materials that are less soluble in the liquid will increase the result faster than the material with greater solubility.The purpose of this module is to provide a better understanding on its separation and measurement techniques and its application.

Explanation:

Purpose of gas chromatography

The main purpose of the gas chromatography technique is to separate the compounds that possess:

  • High volatility
  • Low molecular weights
  • Thermal stability
You might be interested in
In class, an instructor pours liquid nitrogen on an inflated balloon and the balloon collapsed on itself. Why does the ballon de
irina [24]
The liquid nitrogen freezes the balloon and shatters it on contact
6 0
3 years ago
What are the parts of a water molecule
astra-53 [7]

Answer:

2 hydrogen, 1 oxygen

Explanation:

H2 O

6 0
2 years ago
Which option describes the direction of thermal energy transfer in earth's oceans?
BlackZzzverrR [31]

Answer:

Energy is moved from areas of surplus to those of deficit, with warm currents transporting warm water polewards and cold currents taking colder water to lower latitudes. It holds onto this heat for longer than the land does and the ocean currents move this heat around, from the tropics to higher latitudes.

3 0
2 years ago
Read 2 more answers
How the proton H gradient is used to make ATP
sladkih [1.3K]

Answer:

The proton gradient produced by proton pumping during the electron transport chain is used to synthesize ATP. Protons flow down their concentration gradient into the matrix through the membrane protein ATP synthase, causing it to spin (like a water wheel) and catalyze conversion of ADP to ATP.

4 0
2 years ago
How to do it???????????
amm1812

Tempratures

1. -60 C = 213.15 K

2. 250 C= 523.15 K

3. 365 K = 91.85 C

4. 205 K = -68.15 C

Pressures

1. 22.0 inches Hg = 558.8 mm Hg

2. 3.4 atm = 2584 mm Hg

3. 680 mm Hg = 0.894737 atm

4. 785 mm Hg = 104.658 kPa

Hope this helped! Please mark as brainliest! Thanks!

Although It showes I'm a begginer, I was An Ace, till my account got deleted.

My name was Sorry14.

4 0
3 years ago
Other questions:
  • Which of the following is an important application of hydrogen bonding
    6·2 answers
  • Lungs function as part of the __________ system and the __________ system.
    12·2 answers
  • An experiment has been set up to determine if different types of insulation wrap will affect the temperature of water in a conta
    10·1 answer
  • Which of the following is a clue that something is pseudoscience?
    9·1 answer
  • If there are 77 electrons in a neutral atom then how many protons will be in the same atom?
    8·1 answer
  • Which is the best definition of an ecosystem?
    7·2 answers
  • 0.53g of acetanilide was subjected to kjeldahl determination and the ammonia produced was collected in 50cm3 of 0.50M of h2so4.o
    8·1 answer
  • In a fizzy drink container how is steel separated from aluminium
    5·1 answer
  • The dimensions of a box are 4.5 cm wide by 5.750 cm long by 1.50 cm tall. What is the volume of the box , taking significant fig
    11·2 answers
  • How many salt and water would you use to prepare 10% salt solution?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!