INSTRUMENTAL ANALYSIS EXAM
QUESTIONS AND DETAILED ANSWERS.
EXPERT VERIFIED FOR GUARANTEED
PASS.
Quality Assurance - ANS All encompassing system that controls data generation
Quality Control - ANS Refers to the policies, procedures, and practices designed to assure
data quality
Standard Operating Procedure (SOP) - ANS A detailed description of how a procedure is to be
executed
Includes safety info, personnel qualifications, calibration, sample collection/prep,
troubleshooting, calculations etc.
Raw Data - ANS Individual measurements
Treated Data - ANS Concentrations derived from raw data by use of calibration method
Results - ANS Quantities reported after statistical analysis of treated data
Use Objective - ANS States purpose for which results will be used
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, Limit of Detection - ANS Lowest concentration of analyte that can be unambiguously
detected but not necessarily quantified; usually defined as the concentration of the analyte that
would give a signal equal to that of the blank plus 3sb (3 times the standard deviation of the
blank)
Limit of Quantification - ANS Lowest concentration that can be determined with acceptable
accuracy and precision; typically equal to the signal of the blank plus 10sb
Specifications - ANS States how good the numbers have to be and what precautions to take
in the analytical procedure
False positive - ANS Says that the concentration exceeds the legal limit when, in fact, the
concentration is below a legal limit
False negative - ANS Says that the concentration is below the limit when it is actually above
the limit
Selectivity (specificity) - ANS Means being able to distinguish analyte from other species in
the sample
Sensitivity - ANS Capability of responding reliably and measurably to changes in analyte
concentration
Method blank - ANS Sample containing all components except analyte, and is taken through
all steps of the analytical procedure
Reagent blank - ANS Similar to method blank, but it has not been subjected to all sample
preparation procedures
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
QUESTIONS AND DETAILED ANSWERS.
EXPERT VERIFIED FOR GUARANTEED
PASS.
Quality Assurance - ANS All encompassing system that controls data generation
Quality Control - ANS Refers to the policies, procedures, and practices designed to assure
data quality
Standard Operating Procedure (SOP) - ANS A detailed description of how a procedure is to be
executed
Includes safety info, personnel qualifications, calibration, sample collection/prep,
troubleshooting, calculations etc.
Raw Data - ANS Individual measurements
Treated Data - ANS Concentrations derived from raw data by use of calibration method
Results - ANS Quantities reported after statistical analysis of treated data
Use Objective - ANS States purpose for which results will be used
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, Limit of Detection - ANS Lowest concentration of analyte that can be unambiguously
detected but not necessarily quantified; usually defined as the concentration of the analyte that
would give a signal equal to that of the blank plus 3sb (3 times the standard deviation of the
blank)
Limit of Quantification - ANS Lowest concentration that can be determined with acceptable
accuracy and precision; typically equal to the signal of the blank plus 10sb
Specifications - ANS States how good the numbers have to be and what precautions to take
in the analytical procedure
False positive - ANS Says that the concentration exceeds the legal limit when, in fact, the
concentration is below a legal limit
False negative - ANS Says that the concentration is below the limit when it is actually above
the limit
Selectivity (specificity) - ANS Means being able to distinguish analyte from other species in
the sample
Sensitivity - ANS Capability of responding reliably and measurably to changes in analyte
concentration
Method blank - ANS Sample containing all components except analyte, and is taken through
all steps of the analytical procedure
Reagent blank - ANS Similar to method blank, but it has not been subjected to all sample
preparation procedures
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
