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Classify the statements based on whether they describe the method of standard addition, the method of external calibration, or both.

Classify the statements based on whether they describe the method of standard addition, the method of external calibration, or both.

Chemistry
Chemistry
10th Edition
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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Classify the statements based on whether they describe the method of standard addition, the method of external calibration, or both.

Ⓒ Macmillan Learning Classify the statements based on whether they describe the method of standard addition, the method of external calibration, or both. Standard addition Known quantities of a standard solution of the analyte are added to the unknown. It is the method of choice when the matrix of the sample may affect the signal. External calibration It consists of a series of standard analyte solutions separate from the unknown. Matrix effects can cause the same analyte concentration in an unknown and standard to give different responses. The response of the instrument must be linear in the sample matrix. Both It is used to measure the instrument response as a function of a known analyte concentration under a set of conditions. A blank is used to correct the response from the instrument. Systematic errors can occur due to sample or standard preparation.
Transcribed Image Text:Ⓒ Macmillan Learning Classify the statements based on whether they describe the method of standard addition, the method of external calibration, or both. Standard addition Known quantities of a standard solution of the analyte are added to the unknown. It is the method of choice when the matrix of the sample may affect the signal. External calibration It consists of a series of standard analyte solutions separate from the unknown. Matrix effects can cause the same analyte concentration in an unknown and standard to give different responses. The response of the instrument must be linear in the sample matrix. Both It is used to measure the instrument response as a function of a known analyte concentration under a set of conditions. A blank is used to correct the response from the instrument. Systematic errors can occur due to sample or standard preparation.
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