Helpful Terms for Reading Technical Reports

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°C Degrees Celsius
AA Atomic Absorption
ANSI/ASQC American National Standards Institute/American Society for Quality Control
ASQC American Society for Quality Control
ASTM American Society for Testing and Materials
Audit A documented investigative evaluation used to determine the degree of compliance with established procedures and guidelines, applied to specific analytical processes.
BFB Bromofluorobenzene
BNA Base, neutral and acid
BOD Biochemical Oxygen Demand
BS Blank Spike, equivalent to LFB and LCS
BTEX Benzene, toluene, ethyl benzene and xylene
CA Corrective Action, the measures taken to correct a situation that is out of the control limits set by QC procedures
CAL Calibration standard, a solution prepared from the dilution of stock standard solutions. The CAL solutions are used to calibrate the instrument response with respect to analyte concentration.
CARB California Air Resources Board
CAS Chemical Abstract Service
CATC Cyanide amenable to chlorination
CCC Calibration check compound
CCV Continuing calibration verification
CFR Code of Federal Regulations
CI Chemical ionization
Cl2 Chlorine
CLP Contract Laboratory Program
COC Chain of Custody
COD Chemical oxygen demand
CRDL Contract Required Detection Limit
CV Coefficient of variation
CVAA Cold Vapor Atomic Absorption Spectroscopy
DBCP l,2-dibromo-3-chloropropane
DBF Dibenzofurans
D/DBP Disinfectants and disinfection by-products
DFTPP Decafluorotriphenylphosphine
Dissolved The concentration of analyte in an aqueous sample that will pass through a 0.45 um membrane filter assembly prior to sample acidification.
DLR Detection Limit for Reporting purposes, established by the California
Department of Health Services for potable water analysis.
DO Dissolved oxygen
DOC Demonstration of capability
DOC Dissolved Organic Carbon
DOE Department of Energy
DOT Department of Transportation
DOD Department of Defense
DQIs Data Quality Indicators
DQOs Data Quality Objectives
DRO Diesel-range organics
ECD Electron capture detector
EDB 1,2-dibromoethane
EDC Endocrine Disrupting Compound
EDD Electronic data deliverable
El Electron impact ionization
ELAP Environmental Laboratory Accreditation Program. A program managed by the State of California, Department of Health Services for accreditation of environmental testing laboratories.
EPA United States Environmental Protection Agency
FIA Flow-injection analysis
FID Flame-ionization detector
FPD Fame photometric detector
GC/MS Gas chromatography/mass spectrometry
GFAA Graphite Furnace Atomic Absorption Spectroscopy
GPC Gel-permeation chromatography
GRO Gasoline-range organics
HAA Haloacetic acid
HAN Haloacetonitrile
HDPE High Density Polyethylene
HPLC High Performance Liquid Chromatography
HRGC High Resolution Gas Chromatography
HRMS High Resolution Mass Spectrometry
IC Ion Chromatography
IC/MS/MS Ion Chromatography-Tandem Mass Spectrometry
ICAP Inductively Coupled Argon Plasma Spectroscopy
ICP Inductively Coupled Plasma
ICP-AES Inductively Coupled Atomic Emission Spectroscopy
ICP-MS Inductively coupled plasma-mass spectrometer
ICV Initial calibration verification
ICS Interference check sample
IDL Instrument Detection Limit
IEC interelement correction factor
IPC Instrument Performance Check Solution – A solution of the method analyte, used to evaluate the performance of the instrument system with respect to a defined set of method criteria.
ISE Ion-selective electrode
ISO/IEC International Standards Organization/International Electrotechnical Commission
LCL Lower Control Limit
LCS Laboratory control sample, equivalent to LFB.
LC/MS/MS Liquid Chormatography-Tandem Mass Spectrometry
LDl and LD2 Laboratory Duplicates – Two aliquots of the same sample taken in the laboratory and analyzed separately with identical procedures. Analyses of LD1 and LD2 indicate precision associated with laboratory procedures, but not with sample collection, preservation, or storage procedures.
LDR Linear Dynamic Range – The concentration range over which the instrument response to an analyte is linear.
LFB Laboratory Fortified Blank – An aliquot of LRB to which known quantities of the method analytes are added in the laboratory. The LFB is analyzed exactly like a sample, and its purpose is to determine whether the methodology is in control and whether the laboratory is capable of making accurate and precise measurements.
LFM Laboratory Fortified Sample Matrix (LFM) – Also known as Matrix Spike. An aliquot of an environmental sample to which a known quantity of the method analyte is added in the laboratory. The LFM is analyzed exactly like a sample, and its purpose is to determine whether the sample matrix contributes bias to the analytical results. The background concentration of the analyte in the sample matrix must be determined in a separate aliquot and the measured value in the LFM corrected for background concentration.
LIMS Laboratory information management system
LLE Liquid-liquid extraction
LOD Limit of detection, equivalent to MDL
LOQ Limit of quantitation, equivalent to RL, PQL and MRL
LRB Laboratory Reagent Blank – An aliquot of reagent water or other blank matrices that are treated exactly as a sample including exposure to all glassware, equipment, solvents, reagents, and internal standards that are used with other samples. The LRB is used to determine if the method analyte or other interferences are present in the laboratory environment, reagents, or apparatus.
LWL Lower Warning Limit
MBAS Methylene Blue Active Substance
MDL Method Detection Limit – The minimum concentration of an analyte that can be identified, measured, and reported with 99% confidence that the analyte concentration is greater than zero.
MEK Methyl ethyl ketone
MRL Method Reporting Limit, equivalent to RL and PQL
MS Matrix spike
MSA Method of standard additions
MSD Mass-selective detector
MSD Matrix spike duplicate
MSDS Material Safety Data Sheet
MS/MS Multistage mass spectrometry
MTBE Methyl-tertiary-butyl ether
NELAC National Environmental Laboratory Accreditation Conference
NELAP National Environmental Laboratory Accreditation Program
NIOSH National Institute for Occupational Safety and Health
NIST National Institute for Standards and Technology
NPD Nitrogen-phosphorus detector
NPDES National Pollutant Discharge Elimination System
OCP Organochlorine pesticides
OSHA Occupational Safety and Health Administration
PAH Polynuclear Aromatic Hydrocarbons (or PNA)
PBDE Polybrominated diphenyl ethers
PBMS Performance Based Measurement System
PC Personal computer
PCBs Polychlorinated biphenyls
PCDD Polychlorinated dibenzo-p-dioxins
PCDF Polychlorinated dibenzofurans
PID Photoionization detection
PPCP Pharmaceutical and Personal Care Products
PQL Practical Quantitation Limit
PT Proficiency Testing
RF Response Factor