Solution-Estimate the confidence limits for the silver

Estimate the confidence limits for the silver concentration

Reference no: EM132439083

Problem: The following results were obtained when each of a series of standard silver solutions was analyzed by flame-atomic absorption spectrometry:

Concentration (ng·mL-1 ) 0 5 10 15 20 25 30 40

Absorbance (r.u.) 0.003 0.127 0.251 0.390 0.498 0.625 0.763 0.771

Required:

Determine the slope and intercept of the calibration plot, along with their confidence limits (95%).

Using the data above, estimate the confidence limits for the silver concentration in:

Question 1: A sample giving an absorbance of 0.456 in a single determination.

Question 2: A sample giving absorbance values of 0.308, 0.317, 0.347, and 0.412 in four separate determinations.

Reference no: EM132439083

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Estimate the confidence limits for the silver concentration : The following results were obtained when each of a series of standard silver solutions was analyzed by flame-atomic absorption spectrometry:

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Estimate the confidence limits for the silver concentration

Reference no: EM132439083

Reference no: EM132439083

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