Introductory Chemistry: An Active Learning Approach
6th Edition
ISBN:9781305079250
Author:Mark S. Cracolice, Ed Peters
Publisher:Mark S. Cracolice, Ed Peters
Chapter3: Measurement And Chemical Calculations
Section: Chapter Questions
Problem 5E
Related questions
Question
- Norepinephrine can be analyzed in human urine. A fixed amount of DHBA was added to each sample and standard in a fixed concentration.
- Please explain the analytical function of adding DHBA.
- To the 1 mL of urine sample, small amounts of 1 µg/mL norepinephrine standard is added and the following results were obtained. What is the concentration of the norepinephrine in the urine sample with uncertainty?
Transcribed Image Text:Added volume of NE standard (µL)
0
Peak height ratio (NE/DHBA)
12
24
36
48
0.298
0.414
0.554
0.664
0.792
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