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Determining the Lead Content of Paint Chips: An Introduction to AAS
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Abstract
This article describes a two-week experiment for introductory chemistry students, where they analyze the lead content of paint chip samples using atomic absorption spectrophotometry (AAS). It involves the preparation of standard lead solutions, preparation and analysis of paint chip samples (including a standard reference lead sample) using AAS, construction of calibration lines, weight % lead calculations, and proper disposal of all waste solutions. Average relative percent errors for students' results consistently decrease between weeks one and two as students become more proficient at the preparation of standard lead and paint chip sample solutions.
Keywords (Audience):
First-Year Undergraduate / GeneralKeywords (Domain):
Laboratory InstructionKeywords (Pedagogy):
Hands-On Learning / ManipulativesKeywords (Subject):
LeadCiting Articles
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This article has been cited by 11 ACS Journal articles (5 most recent appear below).
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Kathryn R. WilliamsJournal of Chemical Education2006 83 (10), 1448In observance of the 2006 National Chemistry Week theme, "Your Home—It's All Built on Chemistry", this From Past Issues looks at previous JCE articles on exterior house paint.
Pressure-Assisted Chelating Extraction as a Teaching Tool in Instrumental Analysis
Omowunmi A. Sadik , Adam K. Wanekaya and Gelfand YevgenyJournal of Chemical Education2004 81 (8), 1177Pressure-Assisted Chelating Extraction as a Teaching Tool in Instrumental Analysis
Omowunmi A. Sadik , Adam K. Wanekaya and Gelfand YevgenyJournal of Chemical Education2004 81 (8), 1177This article describes a laboratory procedure designed for a junior-level instrumental analysis course using a pressure-assisted chelating extraction (PACE) technique to digest heavy metals from solid matrices. PACE can achieve the digestion of metals ...
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- Received: August 03, 2009
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