(a)
Interpretation:
The principle of operation of thermal conductivity detector is to be stated.
Concept introduction:
Thermal conductivity can be defined as the ability of a material to conduct heat.
(b)
Interpretation:
The principle of operation of atomic emission detector is to be stated.
Concept introduction:
Atomic emission occurs when an atom emits some specific wavelengths.
(c)
Interpretation:
The principle of operation of thermionic detector is to be stated.
Concept introduction:
Thermionic emissions occur when electrons are excited from a heated source.
(d)
Interpretation:
The principle of operation of the electron capture detector is to be stated.
Concept introduction:
The electron capture is the process of making unstable atoms more stable.
(e)
Interpretation:
The principle of operation of flame photometric detector is to be stated.
Concept introduction:
Flame photometry is utilized for inorganic chemical analysis. It can detect the concentration of some metals like lithium, sodium, calcium and more.
(f)
Interpretation:
The principle of operation of flame ionization detector is to be stated.
Concept introduction:
Flame ionization detection is a device used to measure the analyte in a gas flow.
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Principles of Instrumental Analysis
- You are developing a Ca detection method for a graphite furnace AA instrument. Your analysis of ten blank samples gives a standard deviation of 0.265 ppb. To establish your limit of detection (LOD), what concentration of Ca should be spiked into your blanks?arrow_forwardFind the standard deviation (if the mass of KHP in three experimental solutions are 0.467,0.48, and 0.48 and the volume of NaOH IN THE exp are 22,29,24 respectively in order to the masses of KHP ) the average molarity of NaOH in each experiment = 5.30x 10^-4 + 4.137x10^-4 + 5.0x10^-4 divided by 3 = 4.81x10^-4 ).arrow_forwardThe same chloride analysis but using a new method for which the standard deviation was not known, gave the following replicate results, mean and estimated standard deviation: Chloride (ppm) = 346, 359, 350; Mean = 351.67 ppm; Standard deviation = 6.66ppm. Solve for the CI for the 3 determinations at 95% probability level.arrow_forward
- a) The refractive index (μ) of water is found to have the values 12.9,12.5,12.3 and 11.8.Calculate the standard deviation for the refractive index of water.arrow_forwardAs part of an analytical chemistry laboratory course, a student measured the Ca2+ content in two water samples, city-supplied drinking water and well-supplied drinking water, using two different analytical methods, flame atomic absorption spectrometry (FAAS) and EDTA complexometric titration. The results of this experiment are given in the table as the mean Ca2+concentration (?¯) and standard deviation (?) in parts per million (ppm). Each sample was measured five times (n=5) by each method. Method City-Supplied Drinking Water (?¯±?x¯±s) Well-Supplied Drinking Water (?¯±?x¯±s) FAAS 57.57±0.68 ppm 64.77±0.70 ppm EDTA titration 58.32±0.96 ppm 65.62±0.97 ppm Method Comparison: For each drinking water sample (city and well), compare the Ca2+ content measured by FAAS and EDTA titration. Calculate the ? value for each sample. Do the methods produce statistically different results at the 95% confidence level when measuring the Ca2+content of the city-supplied drinking water? Do the…arrow_forwardList the desirable characteristics of HPLC detectors.arrow_forward
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- Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning