5) A 0.50 g soil sample was digested with 1.0 mL of HNO3-H2O2 mixture (1:1, v/v) and then diluted to 25.0 mL in order to find its copper concentration by flame atomic absorption spectrophotometer (FAAS). Next, 5.0 mL of this solution was diluted to 100 mL and then analyzed by FAAS system. The average absorbance for this solution was 0.0197. A series of copper standard solution (0.10-5.0 mg/L) was analyzed by FAAS system and linear equation for copper calibration plot was recorded as y-0.04x+0.0097 where y was absorbance and x was copper concentration as mg/L. Calculate copper concentration in the soil sample as mg/kg.
5) A 0.50 g soil sample was digested with 1.0 mL of HNO3-H2O2 mixture (1:1, v/v) and then diluted to 25.0 mL in order to find its copper concentration by flame atomic absorption spectrophotometer (FAAS). Next, 5.0 mL of this solution was diluted to 100 mL and then analyzed by FAAS system. The average absorbance for this solution was 0.0197. A series of copper standard solution (0.10-5.0 mg/L) was analyzed by FAAS system and linear equation for copper calibration plot was recorded as y-0.04x+0.0097 where y was absorbance and x was copper concentration as mg/L. Calculate copper concentration in the soil sample as mg/kg.
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:5) A 0.50 g soil sample was digested with 1.0 mL of HNO3-H2O2 mixture (1:1, v/v) and then diluted to 25.0
mL in order to find its copper concentration by flame atomic absorption spectrophotometer (FAAS). Next, 5.0
mL of this solution was diluted to 100 mL and then analyzed by FAAS system. The average absorbance for
this solution was 0.0197. A series of copper standard solution (0.10-5.0 mg/L) was analyzed by FAAS system
and linear equation for copper calibration plot was recorded as y-0.04x+0.0097 where y was absorbance and
x was copper concentration as mg/L. Calculate copper concentration in the soil sample as mg/kg.
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