Question
In: Chemistry
describe the components of a gas chromatograph from the point of sample introduction to detection of...
describe the components of a gas chromatograph from the point of sample introduction to detection of the analyte and the function each of the components serves
Solutions
queen_honey_blossom answered 3 years agoRelated Solutions
How do you calculate the concentration in ppm from a gas chromatograph? The chromatograph is from...
How do you calculate the concentration in ppm from a gas
chromatograph? The chromatograph is from a BTEX mixture and shows a
peak for each component of the mixture. Bromobenzene was used as an
internal standard. How can you calculate the concentration of each
component using the ratios of peak area? Is there a specific
equation for this?
Thank you!
1. In this experiment we injected the sample to be analyzed by Gas Chromatograph equipped with...
1. In this experiment we injected the sample to be analyzed by
Gas Chromatograph equipped with an FID (Flame Ionization Detector).
The detector ionizes the sample as it reaches it, and the peak is
proportional to the number of ions with a live flame. Explain in
detail, why we need to run a standard when the GC is equipped with
an FID detector to identify the component in a sample?
1. In this experiment we injected the sample to be analyzed by Gas Chromatograph equipped with...
1. In this experiment we injected the sample to be analyzed by
Gas Chromatograph equipped with an FID (Flame Ionization Detector).
The detector ionizes the sample as it reaches it, and the peak is
proportional to the number of ions with a live flame. Explain in
detail, why we need to run a standard when the GC is equipped with
an FID detector to identify the component in a sample?
2. Gas Chromatography is another chromatography method you are
learning...
1. Sketch diagrams of a gas chromatograph and a high performance liquid chromatograph. Label all the...
1. Sketch diagrams of a gas chromatograph and a high performance
liquid chromatograph. Label all the parts and describe their use in
one sentence each. Why is HPLC so important to modern industrial
chemistry?
A gas chromatograph is used to measure the amounts of various compounds that are present in...
A gas
chromatograph is used to measure the amounts of various compounds
that are present in a sample. It contains a counter that gives a
value proportional to the amount of the compound present. An
experiment was done to see what the effects of the Flow Rate (fast
or slow) and the Concentration (high, low, or medium) have on the
Count. Each mixture was run 5 times and the total count was
recorded each time.
a)
What are
the factors,...
An ideal gas expands isobarically (constant pressure) from point A to point B. The gas is...
An ideal gas expands isobarically (constant pressure) from point
A to point B. The gas is compressed isothermally (constant
temperature) from point B to C. Finally, the gas goes through an
isochoric (constant volume) process until it returns to point A.
Given: Volume at point A = Volume at point C = 0.004 m3,
Volume at point B = 0.008 m3, Pressure at point A =
Pressure at point B = 1,000,000 Pa, Temperature at point A = 600
K....
A gas chromatogram of the organic components of a sample of beer using a column that...
A gas chromatogram of the organic components of a sample of beer
using a column that separates compounds on the basis of their
relative boiling points provides a GC trace with several peaks. Two
of the smaller peaks, with retention times of 9.56 and 16.23
minutes, are believed to be ethyl acetate and ethyl butyrate,
respectively.
a. From the above information, which component of the sample,
ethyl acetate or ethyl butyrate, elutes faster? What are the
reported boiling points of...
A mixture of benzene (C6H6), toluene (CH3C6H5) and methane (CH4) was injected into a gas chromatograph...
A mixture of benzene (C6H6), toluene (CH3C6H5) and methane (CH4)
was injected into a gas chromatograph column that is12.5 m long.
The peaks were observed at 40 s (methane), 260 s (benzene), and 272
s (toluene).
(a) Calculate the adjusted retention time (tS) and capacity
factor (k) for each solute.
(b) Find the relative retention () of toluene and benzene.
(c) If the width at the base (w) of the peaks for toluene and
benzene is 16 and 20 s,...
Describe the malware detection symptoms
Describe the malware detection symptoms
To calibrate a gas chromatograph for blood alcohol assays, the technician must prepare a standard 0.08%(w/v)...
To calibrate a gas chromatograph for blood alcohol assays, the
technician must prepare a standard 0.08%(w/v) alcohol solution.
Describe how to prepare 100mL of 0.08%(w/w) from a “140 proof”
ethanol-water commercial standard. Hint: 140 proof = 70%(w/v).
Comment on the total volume of the 0.08%(w/v) calibration standard:
Is 100 mL a sufficient volume to allow accurate preparation of the
calibration standard… or would 1,000 mL be better? Defend your
answer.
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