5. Introduction - part B
The chapter emphasizes the methodologies involved in the analysis of environmental samples, focusing on surrogate compounds and their significance in extraction and recovery calculations. It details the processes of using hexane for sample extraction, concentrating the extracted compounds, and the importance of calibration in analytical instrumentation. Practical considerations such as extraction efficiency, matrix interference, detection limits, and dilution are also discussed to ensure accurate and reliable analytical results.
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What we have learnt
- Surrogate compounds serve as stand-ins for the analyte of interest to assess recovery efficiency.
- Extraction and concentration processes are crucial for ensuring analytes are detected by sensitive instruments.
- Standard methods of analysis are essential in providing a framework for accurate environmental assessments.
Key Concepts
- -- Surrogate Compound
- A surrogate is a compound added to a sample to evaluate the performance of an analytical method and its ability to recover the analyte of interest.
- -- Extraction Efficiency
- Extraction efficiency refers to the effectiveness of a process in recovering a specific analyte from a matrix, which can be affected by factors like the matrix type and characteristics.
- -- Calibration
- Calibration is the process of adjusting analytical instrument responses based on known standards to accurately quantify unknown samples.
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