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- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/15%3A_Quality_Assurance/15.04%3A_Evaluating_Quality_Assurance_DataThe text discusses two approaches to developing a quality assurance program in analytical chemistry: the prescriptive approach and the performance-based approach. The prescriptive approach involves a ...The text discusses two approaches to developing a quality assurance program in analytical chemistry: the prescriptive approach and the performance-based approach. The prescriptive approach involves a strict protocol for quality assessment, often required by regulatory agencies, while the performance-based approach allows laboratories flexibility, using control charts to monitor statistical control. Control charts help detect errors, ensuring precision and accuracy in analysis.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/03%3A__The_Vocabulary_of_Analytical_Chemistry/3.06%3A_ProtocolsA protocol is a set of stringent written guidelines crucial for agency approval of analytical results. It includes procedures for internal and external QA/QC to ensure accuracy. The EPA's protocol for...A protocol is a set of stringent written guidelines crucial for agency approval of analytical results. It includes procedures for internal and external QA/QC to ensure accuracy. The EPA's protocol for trace metal analysis using atomic absorption spectroscopy involves calibration with a method blank and three standards. Calibration is verified through ICV and ICB samples, needing results within ??10% accuracy.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/15%3A_Quality_Assurance/15.03%3A_Quality_AssessmentThe text explains that quality control directives are crucial for analysis but not enough to ensure statistical control, which is managed by quality assessment???a key part of quality assurance. Quali...The text explains that quality control directives are crucial for analysis but not enough to ensure statistical control, which is managed by quality assessment???a key part of quality assurance. Quality assessment helps maintain, detect, and suggest solutions for loss of statistical control. It includes internal methods, like analyzing duplicate samples and spikes, and external methods, such as laboratory certification by an agency.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_2.1_(Harvey)/15%3A_Quality_Assurance/15.07%3A_Chapter_Summary_and_Key_TermsThe page discusses the importance of quality assurance programs in analytical work to ensure high-quality results. It distinguishes between quality control, which involves bringing a system into stati...The page discusses the importance of quality assurance programs in analytical work to ensure high-quality results. It distinguishes between quality control, which involves bringing a system into statistical control through documentation and good practices, and quality assessment, which uses statistical tools to evaluate whether an analysis is under control and identify potential issues.
- https://chem.libretexts.org/Courses/Los_Angeles_Trade_Technical_College/Analytical_Chemistry/2%3A_Analytical_Chemistry_2.0_(Harvey)/16%3A_Quality_Assurance/16.3%3A_Quality_AssessmentThe written directives of a quality control program are a necessary, but not a sufficient, condition for obtaining and maintaining a state of statistical control. Although quality control directives e...The written directives of a quality control program are a necessary, but not a sufficient, condition for obtaining and maintaining a state of statistical control. Although quality control directives explain how we are to conduct an analysis, they do not indicate whether the system is under statistical control. This is the role of quality assessment, the second component of a quality assurance program.
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Analytical_Chemistry_Volume_II_(Harvey)/06%3A_Quality_Assurance/6.03%3A_Quality_AssessmentThe written directives of a quality control program are a necessary, but not a sufficient condition for obtaining and maintaining a state of statistical control. Although quality control directives ex...The written directives of a quality control program are a necessary, but not a sufficient condition for obtaining and maintaining a state of statistical control. Although quality control directives explain how to conduct an analysis, they do not indicate whether the system is under statistical control. This is the role of quality assessment, the second component of a quality assurance program.
