Abbreviations and Symbols
|
C =
|
celsius
|
Fs =
|
F-pseudosigma - nonparametric statistic for deviation
|
HCl =
|
hydrochloric acid
|
Hg - =
|
mercury sample
|
HNO3 =
|
nitric acid
|
Lh =
|
lower hinge value
|
L =
|
liter
|
Lab =
|
Laboratory
|
mg/L =
|
milligrams per liter
|
mL =
|
milliliter
|
M - =
|
major ion sample
|
MPV =
|
most probable value
|
n =
|
number of analyses
|
N =
|
normality
|
N - =
|
nutrient sample
|
NR =
|
not rated; less than values reported or insufficient data
|
OLR =
|
overall laboratory rating for each sample type
|
OWR =
|
overall weighted rating for all sample types
|
P - =
|
precipitation sample (low ionic-strength, typically <50
mS/cm)
|
ppm =
|
parts per million
|
SRS =
|
standard reference sample
|
T - =
|
trace sample
|
Uh =
|
Upper hinge value
|
USGS =
|
United States Geological Survey
|
V =
|
number of rated analyses
|
Z-value =
|
number of F-pseudosigmas from the MPV
|
mg/L =
|
micrograms per liter
|
mm =
|
micrometer
|
mS/cm =
|
microsiemens per centimeter at 25º Celsius
|
< =
|
less than
|
-- =
|
not reported
|
|
Analytical methods and codes
|
Code
|
Method
|
0
|
Other
|
1
|
Atomic absorption: direct, air
|
2
|
Atomic absorption: direct, nitrous oxide
|
3
|
Atomic absorption: graphite furnace
|
4
|
Inductively coupled plasma
|
5
|
Direct current plasma
|
6
|
Inductively coupled plasma/mass spectrometry
|
7
|
Ion chromatography
|
8
|
Atomic absorption: cold vapor
|
9
|
Atomic fluorescence
|
10
|
Atomic absorption: extraction
|
11
|
Atomic absorption: hydride
|
12
|
Flame emission
|
20
|
Titration: colorimetric
|
21
|
Titration: electrometric
|
22
|
Colorimetric
|
40
|
Ion selective electrode
|
41
|
Electrometric [pH and specific conductance]
|
50
|
Gravimetric
|
51
|
Turbidimetric
|
|