Question
In: Chemistry
Co(II) was used as an internal standard to analyze a sample of Ti(IV) with atomic absorption...
Co(II) was used as an internal standard to analyze a sample of Ti(IV) with atomic absorption spectroscopy (AAS). A standard mixture containing 1.40 μg Co/mL and 1.35 μg Ti/mL measured by AAS produced a signal-to-signal ratio of 2.41 Ti: 1.00 Co. A mixture was prepared by combining 4.50 mL of a Ti(IV) solution of unknown concentration with 4.00 mL of a 14.1 μg/mL solution of Co(II). The absorbance of the mixture at the Ti(IV) wavelength was 0.175 and the absorbance at the Co(II) wavelength was 0.187. Determine the concentration, in moles per liter, of Ti(IV) in the original unknown solution.
Solutions
queen_honey_blossom answered 2 years agoRelated Solutions
Atomic absorption spectrometry was used with the method of standard additions to determine the concentration of...
Atomic absorption spectrometry was used with the method of
standard additions to determine the concentration of cadmium in a
sample of an industrial waste stream. For the addition, 10.0 μL of
a 1000.0 μg/mL Cd standard was added to 10.0 mL of solution. The
following data were obtained: Absorbance of reagent blank = 0.041
Absorbance of sample = 0.476 Absorbance of sample plus addition =
0.821 What was the concentration of the cadmium in the waste stream
sample?Later, the analyst...
Atomic absorption spectrometry was used with the method of standard additions to determine the concentration of...
Atomic absorption spectrometry was used with the method of
standard additions to determine the concentration of cadmium in a
sample of an industrial waste stream. For the addition, 10.0 μL of
a 1000.0 μg/mL Cd standard was added to 10.0 mL of solution. The
following data were obtained: Absorbance of reagent blank = 0.044
Absorbance of sample = 0.478 Absorbance of sample plus addition =
0.878 What was the concentration of the cadmium in the waste stream
sample?Later, the analyst...
Atomic absorption spectrometry was used with the method of standard additions to determine the concentration of...
Atomic absorption spectrometry was used with the method of
standard additions to determine the concentration of cadmium in a
sample of an industrial waste stream. For the addition, 10.0 μL of
a 1000.0 μg/mL Cd standard was added to 10.0 mL of solution. The
following data were obtained: Absorbance of reagent blank = 0.043
Absorbance of sample = 0.320 Absorbance of sample plus addition =
0.840
What was the concentration of the cadmium in the waste stream
sample?
_____ μg/ml...
Atomic absorption spectrometry was used with the method of standard additions to determine the concentration of...
Atomic absorption spectrometry was used with the
method of standard additions to determine the concentration of
cadmium in a sample of an industrial waste stream. For the
addition, 10.0 μL of a 1000.0 μg/mL Cd standard was added to 10.0
mL of solution. The following data were obtained: Absorbance of
reagent blank = 0.034 Absorbance of sample = 0.318 Absorbance of
sample plus addition = 0.753 What was the concentration of the
cadmium in the waste stream sample? Calculate percent...
Atomic absorption spectroscopy was used with the method of standard additions to determine the concentration of...
Atomic absorption spectroscopy was used with the method of
standard additions to determine the concentration of cadmium in a
sample of an industrial waste stream. For the addition, 10.0 μL of
a 1000.0 μg/mL Cd standard was added to 10.0 mL of the unknown
solution. The results obtained are shown in the table. Absorbance
Reagent blank 0.028 Sample 0.480 Sample plus addition 0.887 What is
the concentration of the cadmium in the waste stream sample? c = μ
g /...
Atomic absorption spectroscopy was used to determine the amount of aluminum in a sample of sunscreen....
Atomic absorption spectroscopy was used to determine the amount
of aluminum in a sample of sunscreen. A blank solution was measured
seven times to determine the detection and quantitation limits of
the spectrometer. The blank readings were as follows: 0.0086,
0.0107, 0.0095, 0.0103, 0.0113, 0.0104, and 0.0094 AU. Determine
the signal at the detection limit and the signal at the limit of
quantitation for this method.
a) Horvat and co-workers used atomic absorption spectroscopy to determine the concentration of Hg in coal...
a) Horvat and co-workers used atomic absorption spectroscopy to
determine the concentration of Hg in coal fly ash.22 Of particular
interest to the authors was developing an appropriate procedure for
digesting samples and releasing the Hg for analysis. As part of
their study they tested several reagents for digesting samples.
Their results using HNO3 and using a 1 + 3 mixture of HNO3 and HCl
are shown here. All concentrations are given as ppb Hg sample.
HNO3: 161 165 160...
2) The ferrous ion-orthophenanthroline complex can be used to analyze for Fe(II) by using the absorption...
2) The ferrous ion-orthophenanthroline complex can be used to
analyze for Fe(II) by using the absorption of this complex at 508
nm. A group of samples is known to contain between 0.1 and 0.2 g of
Fe. A known sample containing 100 mg of Fe per liter was treated
according to protocol, and the absorbance on a filter photometer
was set to 0. The absorbance of a second standard containing 200 mg
Fe per liter was then determined to be...
What is beam modulation and why is it used in atomic absorption?
What is beam modulation and why is it used in atomic
absorption?
Explain why atomic emission spectroscopy can be used for multi-elemental analysis, but atomic absorption is used...
Explain why atomic emission spectroscopy can be used for
multi-elemental analysis, but atomic absorption is used mostly for
quantification of single element.
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