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.
Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter15: Molecular Luminescence Spectrometry
Section: Chapter Questions
Problem 15.10QAP
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