Copper was determined in a river water sample by atomic absorption spectrometry and the method of...
Copper was determined in a river water sample by atomic absorption spectrometry and the method of standard additions. For the addition, 250.0 μL of a 1000.0-μg/mL standard was added to 150.0 mL of solution.
The following data were obtained Absorbance of reagent blank = 0.023 Absorbance of sample = 0.519 Absorbance of sample plus addition - blank = 1.017
Calculate the copper concentration in the sample.
Later studies showed that the reagent blank used to obtain the above data was inadequate and that the actual blank absorbance was 0.080. Find the copper concentration with the appropriate blank, and determine the error caused by using an improper blank. THANK YOU!! Please don't skip steps, I want to learn the problem.
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Copper was determined in a river water sample by atomic absorption spectrometry and the method of...
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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 L of a 1000.0 mL Cd standard was added to 10.0 mL of solution. The following data were obtained: sorbance of reagent blank- 0.029 Absorbance of sample 0.464 Absorbance of sample plus addition 0.863 What was the concentration of the cadmium in the waste stream sample? Number 1.09x 10 ug/mL Later,...
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with a measured amount of AgNO3 that is excess of the chloride
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quantified and the chloride is measured by assuming that chloride
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