The measurement of Li in brine (salt water) is used by geochemists to help determine the origin of this fluid in oil fields. Flame atomic absorption of Li is subject to interference by other elements. Atomic absorption of analysis of replicate sample of Li in a brine sample gave results in the table. d. Suggest another method for removing interferences in this analysis. e. What value do you recommend for reporting the real concentration of Li in the sample?
The measurement of Li in brine (salt water) is used by geochemists to help determine the origin of this fluid in oil fields. Flame atomic absorption of Li is subject to interference by other elements. Atomic absorption of analysis of replicate sample of Li in a brine sample gave results in the table. d. Suggest another method for removing interferences in this analysis. e. What value do you recommend for reporting the real concentration of Li in the sample?
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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The measurement of Li in brine (salt water) is used by geochemists to help determine the origin of this fluid in oil fields. Flame atomic absorption of Li is subject to interference by other elements. Atomic absorption of analysis of replicate sample of Li in a brine sample gave results in the table.
d. Suggest another method for removing interferences in this analysis.
e. What value do you recommend for reporting the real concentration of Li in the sample?
Transcribed Image Text:Sample and Treatment
Li (ug/mL)
Calibration Method
Flame Type
1. None
25.1
standard curve
air/CH2
2. Dilute 1/10 with H20 64.8
standard curve
air/C;H2
3. Dilute 1/10 with H20 82.5
4. None
5. Dilute 1/10 with H20 79.6
6. Dilule 1/10 witlh H20 80.4
standard addition
air/C;H2
77.3
standard curve
N20/C;H2
standard curve
N;O/C;H2
slandard additiuu
N20/C;H2
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