Forensic Analysis - QA4

These flashcards cover key concepts in the lecture 'Analytical Chemistry - Laboratory Proficiency Part 1', focusing on bias assessment, confidence intervals, and the use of reference materials in laboratory settings.

Bias Assessment

The process of evaluating and controlling systematic errors in analytical measurements.

Certified Reference Materials (CRM)

Materials with a known concentration used to validate the accuracy of laboratory methods.

Confidence Interval (C.I.)

A range of values that is likely to contain the true value of a measurement, expressed at a certain confidence level.

Student t-value

A multiplier used in the calculation of confidence intervals, varying with sample size and desired confidence level.

Laboratory Reference Materials (LRM)

Bulk materials produced in the laboratory for routine quality control and reference standards.

Calibration Drift

Changes in the calibration of analytical instruments over time that can affect measurement accuracy.

Mass Produced CRM

A standardized reference material that is homogenized and analyzed to assure acceptable bias in methods.

Quality Control (QC)

The processes used to maintain the quality of laboratory analytical results.

Batch Bracketing

A technique in sample testing that involves checking standard measurements before and after groups of samples.

High Sample Throughput

The ability of a laboratory to process a large number of samples in a short period.