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In: Chemistry
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 / mL Later, the analyst learned that the blank was not truly a reagent blank, but water. The absorbance of the actual reagent blank, is 0.062 . Calculate the cadmium concentration using the new information for the blank. c = μ g / mL Calculate the percent error caused by using water as the blank instead of the reagent blank. error: %
Solutions
queen_honey_blossom answered 1 year 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...
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...
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.
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.
The purpose of an ionisation suppressant in atomic absorption spectroscopy is
The purpose of an ionisation suppressant in
atomic absorption spectroscopy is
Three major spectroscopic methods for elemental analysis atoms are Atomic Absorption Spectroscopy, Atomic Emission Spectroscopy, and...
Three major spectroscopic methods for elemental
analysis atoms are Atomic Absorption Spectroscopy, Atomic Emission
Spectroscopy, and Atomic Mass Spectroscopy. Briefly describe the
physics behind each of the three methods.
Why do we use atomic absorption spectroscopy?
Why do we use atomic absorption spectroscopy?
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