The following calibration data were obtained by an atomic absorption spectrophotometric (AAS) method for the determination of mercury in an herbal product. (show complete solution) 1. What is the detection limit for the method? 2. What is the limit of quantitation for the method?

The following calibration data were obtained by an atomic absorption spectrophotometric (AAS) method for the determination of mercury in an herbal product. (show complete solution) 1. What is the detection limit for the method? 2. What is the limit of quantitation for the method?

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

ChapterA1: Evaluation Of Analytical Data

Section: Chapter Questions

Problem A1.5QAP

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Question

The following calibration data were obtained by an atomic absorption spectrophotometric (AAS) method for the determination of mercury in an herbal product.

(show complete solution)

1. What is the detection limit for the method?

2. What is the limit of quantitation for the method?

Concentration (ppm)
No. of replicates
Mean Analytical Signal +
Standard deviation
0.00
25
0.0310 + 0.0079
2.00
0.1730 + 0.0094
6.00
5
0.4220 + 0.0084
10.00
0.7020 + 0.0084
14.00
0.9560 + 0.0085
18.00
5
1.2480 + 0.0110

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