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Question 4: (3 points) A chromatographic separation was conducted on a sample containing DDT pesticide. This sample was treated with an internal standard of Isodrin, giving a concentration of 15.0 ppm. A 20 µL injection onto the HPLC gave a detector response of 1012 for Isodrin and 3411 for DDT. Under the same condition, 20 µL standard solution of 30.0 ppm Isodrin and 15.0 ppm of DDT was injected giving a response of 899 and 2791 respectively. What is the concentration of DDT in the sample?

          Question 4: (3 points)
A chromatographic separation was conducted on a sample containing DDT pesticide. This sample was treated with an internal standard of Isodrin, giving a concentration of 15.0 ppm.
A 20 µL injection onto the HPLC gave a detector response of 1012 for Isodrin and 3411 for DDT. Under the same condition, 20 µL standard solution of 30.0 ppm Isodrin and 15.0 ppm of DDT was injected giving a response of 899 and 2791 respectively.
What is the concentration of DDT in the sample?

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question 4 3 points a chromatographic separation was conducted on a sample containing ddt pesticide this sample was treated with an internal standard of isodrin giving a concentration of 150 84166

Added by Mark V.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

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Solved by Expert Madhur L

04/22/2022

Step 1

Let $R_{DDT,sample}$ be the detector response of DDT in the sample. Let $R_{Isodrin,sample}$ be the detector response of Isodrin in the sample. Let $C_{DDT,standard}$ be the concentration of DDT in the standard solution. Let $R_{DDT,standard}$ be the detector Show more…

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Question 4: (3 points) A chromatographic separation was conducted on a sample containing DDT pesticide. This sample was treated with an internal standard of Isodrin, giving a concentration of 15.0 ppm. A 20 µL injection onto the HPLC gave a detector response of 1012 for Isodrin and 3411 for DDT. Under the same condition, 20 µL standard solution of 30.0 ppm Isodrin and 15.0 ppm of DDT was injected giving a response of 899 and 2791 respectively. What is the concentration of DDT in the sample?

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