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 standard addition air/C;H2 4. None 5. Dilute 1/10 with H20 6. Dilute 1/10 witlh H20 77.3 standard curve N20/C;H2 79.6 standard curve N20/C;H2 80.4 slandard addition N20/C;H2

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter31: Introduction To Analytical Separations
Section: Chapter Questions
Problem 31.30QAP
icon
Related questions
Question

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.

a. Suggest a reason for the increasing apparent concentration of Li from sample 1 to 2.

b. Suggest a reason for the increasing apparent concentration of Li from sample 1 to 3

c. Why do samples 4-6 give a nearly constant result?
(What type of interference you think is being eliminated? 

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
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
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Nuclear Magnetic Resonance
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Fundamentals Of Analytical Chemistry
Fundamentals Of Analytical Chemistry
Chemistry
ISBN:
9781285640686
Author:
Skoog
Publisher:
Cengage
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning