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Question 4 An imported honey sample was analysed for heavy metal contamination, and specifically lead, by atomic spectrophotometry. Triplicate samples of honey were weighed, dissolved in 2 % nitric acid and made up to volume in a 50.0 mL volumetric flask. Lead standards in the range 50-400 µg/L were prepared. The diluted samples and standards were analysed by inductively coupled plasma atomic emission spectrophotometry (ICP-AES). Use the information below (Table 1 and equation of the line) to determine the mean concentration of lead in the honey in mg Pb per 100 g honey (mg/100 g). Table 1. Sample weight (g) and ICP-AES detector response for three imported honey samples. Sample number 1 /w/N/. 2 3. Sample weight (g) 2.82 2.85 2.84 Detector response 5336 5370 5342 Equation of the line for detector response of lead standards: y=19.8x + 239.7

Question 4 An imported honey sample was analysed for heavy metal contamination, and specifically lead, by atomic spectrophotometry. Triplicate samples of honey were weighed, dissolved in 2 % nitric acid and made up to volume in a 50.0 mL volumetric flask. Lead standards in the range 50-400 µg/L were prepared. The diluted samples and standards were analysed by inductively coupled plasma atomic emission spectrophotometry (ICP-AES). Use the information below (Table 1 and equation of the line) to determine the mean concentration of lead in the honey in mg Pb per 100 g honey (mg/100 g). Table 1. Sample weight (g) and ICP-AES detector response for three imported honey samples. Sample number 1 /w/N/. 2 3. Sample weight (g) 2.82 2.85 2.84 Detector response 5336 5370 5342 Equation of the line for detector response of lead standards: y=19.8x + 239.7

Chemistry
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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question 4 An imported honey sample was analysed for heavy metal contamination, and specifically lead, by atomic spectrophotometry. Triplicate samples of honey were weighed, dissolved in 2 % nitric acid and made up to volume in a 50.0 mL volumetric flask. Lead standards in the range 50-400 µg/L were prepared. The diluted samples and standards were analysed by inductively coupled plasma atomic emission spectrophotometry (ICP-AES). Use the information below (Table 1 and equation of the line) to determine the mean concentration of lead in the honey in mg Pb per 100 g honey (mg/100 g). Table 1. Sample weight (g) and ICP-AES detector response for three imported honey samples. Sample number 1 2 3 Sample weight (g) 2.82 2.85 2.84 Detector response 5336 5370 5342 Equation of the line for detector response of lead standards: y=19.8x + 239.7
Transcribed Image Text:Question 4 An imported honey sample was analysed for heavy metal contamination, and specifically lead, by atomic spectrophotometry. Triplicate samples of honey were weighed, dissolved in 2 % nitric acid and made up to volume in a 50.0 mL volumetric flask. Lead standards in the range 50-400 µg/L were prepared. The diluted samples and standards were analysed by inductively coupled plasma atomic emission spectrophotometry (ICP-AES). Use the information below (Table 1 and equation of the line) to determine the mean concentration of lead in the honey in mg Pb per 100 g honey (mg/100 g). Table 1. Sample weight (g) and ICP-AES detector response for three imported honey samples. Sample number 1 2 3 Sample weight (g) 2.82 2.85 2.84 Detector response 5336 5370 5342 Equation of the line for detector response of lead standards: y=19.8x + 239.7
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