SIP:

State implementation plan

SO2:

Sulfur dioxide

SPM:

Single point air monitor

SPME:

Solid-phase microextraction. A method used to concentrate the components in odor samples prior to analysis.

SRM:

Standard reference material

STPD:

Standard temperature and pressure, dry

Synoptic:

Relating to weather conditions that exist simultaneously over a large area.


TAN:

Total ammoniacal nitrogen

TDLS:

Tunable diode laser spectroscopy

Tg:

Teragram. 1 × 1012 g, or 1 million metric tonnes

TKN:

Total Kjeldahl nitrogen

TMDL:

Total maximum daily load

TNRCC:

Texas Natural Resource Conservation Commission

tpy:

Tons (short) per year

TRS:

Total reduced sulfur (includes H2S and mercaptans)

TS:

Total solids

TSP:

Total suspended particulates


Uncertainty:

The estimated amount or percentage by which an observed or calculated value may differ from the true value.

USC:

United States Code

USDA:

U.S. Department of Agriculture

USDC:

U.S. Department of Commerce


VFA:

Volatile fatty acid

VOC:

Volatile organic compound

VS:

Volatile solids. The weight lost upon ignition at 550 °C—an approximation of moisture and organic matter present (using Method 2540 E of the American Public Health Association).



The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement