Answered: absorbance

Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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Question

A company needs to determine the lead concentration of a atmospheric particulate matter by atomic absorption, an analyst constructed the standard curve below (or calibration curve/analytical curve). The entire mass of atmospheric particulate deposited in a standard filter was dissolved with suitable reagents, and bulked up in a balloon volumetric volume of 50.00 ml and then diluted 1:10. whereas a aliquot of this sample was analyzed and the absorbance value was 0.5. What is the mass of lead in the particulate material?

1.57
1.2-
y = 0,0262x + 0,0007
R? = 0,9998
0.9-
0.6-
0.3-
0.0+
0.0
10.0
40.0
50.0
concentration (mgmL')
absorbance

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