A scientist wishes to measure the concentration of methyl benzoate in a plant stream by gas chromatography. He prepares a sample of butyl benzoate to use as an internal standard. The results of a preliminary run, which used a solution known to contain 1.31 mg/mL of methyl benzoate (peak A) and 1.44 mg/mL of butyl benzoate (peak B), are shown. The area of peak A is determined to be 352 and the area of peak B is determined to be 395 measured in arbitrary units by the computer. To measure the sample, 1.00 mL of a standard sample of butyl benzoate containing 2.21 mg/ml. is mixed with 1.00 mL of the plant stream material. Analysis of the mixture gave a peak area of 473 for peak A and 421 for peak B. What is the concentration of methyl benzoate in the plant stream? Detector Response 10 Time (min) 5 15

A scientist wishes to measure the concentration of methyl benzoate in a plant stream by gas chromatography. He prepares a sample of butyl benzoate to use as an internal standard. The results of a preliminary run, which used a solution known to contain 1.31 mg/mL of methyl benzoate (peak A) and 1.44 mg/mL of butyl benzoate (peak B), are shown. The area of peak A is determined to be 352 and the area of peak B is determined to be 395 measured in arbitrary units by the computer. To measure the sample, 1.00 mL of a standard sample of butyl benzoate containing 2.21 mg/ml. is mixed with 1.00 mL of the plant stream material. Analysis of the mixture gave a peak area of 473 for peak A and 421 for peak B. What is the concentration of methyl benzoate in the plant stream? Detector Response 10 Time (min) 5 15

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter88: Column Chromatography

Section: Chapter Questions

Problem 5P

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A scientist wishes to measure the concentration of methyl benzoate in a plant stream by gas chromatography. He prepares a sample of butyl benzoate to use as an internal standard. The ic results of a preliminary run, which used a solution known to contain 1.37 mg/mL of methyl benzoate (peak A) and 1.51 mg/mL of butyl benzoate (peak B), are shown. The area of peak A is determined to be 301 and the area of peak B is determined to be 349 measured in arbitrary units by the computer. To measure the sample, 1.00 mL of a standard sample of butyl benzoate containing 2.41 mg/mL is mixed with 1.00 mL of the plant stream material. Analysis of the mixture gave a 10 Time (min) 15 peak area of 499 for peak A and 417 for peak B. What is the concentration of methyl benzoate in the plant stream? methyl benzoate concentration: mg/mL Detector Response
A scientist wishes to measure the concentration of methyl benzoate in a plant stream by gas chromatography. He prepares a sample of butyl benzoate to use as an internal standard. The results of a preliminary run, which used a solution known to contain 1.37 mg/mL of methyl benzoate (peak A) and 1.51 mg/mL of butyl benzoate (peak B), are shown. The area of peak A is determined to be 301 and the area of peak B is determined to be 349 measured in arbitrary units by the computer. To measure the sample, 1.00 mL of a standard sample of butyl benzoate containing 2.41 mg/mL is mixed with 1.00 mL of the plant stream material. Analysis of the mixture gave a 10 Time (min) 15 peak area of 499 for peak A and 417 for peak B. What is the concentration of methyl benzoate in the plant stream? methyl benzoate concentration: mg/mL Detector Response
A scientist wishes to measure the concentration of methyl benzoate in a plant stream by gas chromatography. He prepares a sample of butyl benzoate to use as an internal standard. The results of a preliminary run, which used a solution known to contain 1.35 mg/mL of methyl B benzoate (peak A) and 1.49 mg/mL of butyl benzoate (peak B), are shown. The area of peak A is determined to be 319 and the area of peak B is determined to be 381 measured in arbitrary units by the computer. To measure the sample, 1.00 mL of a standard sample of butyl benzoate containing 2.27 mg/mL is mixed with 1.00 mL of the plant stream material. Analysis of the mixture gave a peak area of 10 Time (min) 15 465 for peak A and 397 for pcak B. What is the concentration of methyl benzoate in the plant stream? methyl benzoate concentration: mg/mL Detector Response
A scientist wishes to measure the concentration of methyl benzoate in a plant stream by gas chromatography. He prepares a sample of butyl benzoate to use as an internal standard. The results of a preliminary run, which used a solution known to contain 1.37 mg/mL of methyl benzoate (peak A) and 1.51 mg/mL of butyl benzoate (peak B), are shown. The area of peak A is determined to be 3.40×102 and the area of peak B is determined to be 398 measured in arbitrary units by the computer. To measure the sample, 1.00 mL of a standard sample of butyl benzoate containing 2.49 mg/mL is mixed with 1.00 mL of the plant stream material. Analysis of the mixture gave a peak area of 437 for peak A and 415 for peak B. What is the concentration of methyl benzoate in the plant stream?
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