Earth & Environmental Sciences
phenol
94%
tracer
79%
environmental conditions
78%
organic matter
67%
aromatic hydrocarbon
53%
river
43%
material
40%
nepheloid layer
37%
pyrolysis
33%
nitrogen compound
29%
open sea
29%
sediment trap
28%
carbohydrate
25%
effect
23%
gulf
18%
sediment
18%
fecal pellet
16%
winter
15%
euphotic zone
15%
summer
14%
particulate organic matter
14%
aldehyde
14%
river bed
13%
liquid chromatography
12%
sugar
12%
canyon
12%
gas chromatography
11%
algal bloom
11%
mass spectrometry
10%
marker
10%
water level
10%
water column
10%
runoff
8%
fish
7%
ecosystem
7%
sea
6%
trend
6%
particle
6%
product
6%
Agriculture & Biology
tracer techniques
100%
phenols
97%
organic matter
90%
aromatic hydrocarbons
64%
environmental factors
64%
rivers
59%
sediment traps
43%
sediments
34%
nitrogen compounds
30%
Felidae
28%
pyrolysis
27%
euphotic zone
19%
mouth
19%
pyrolysis gas chromatography
18%
particulate organic matter
17%
carbohydrates
17%
winter
16%
canyons
16%
stream channels
16%
summer
16%
amino sugars
16%
surface water level
14%
nitrogen
14%
runoff
14%
bottles
12%
gas chromatography-mass spectrometry
12%
aldehydes
12%
pellets
11%
high performance liquid chromatography
10%
ecosystems
9%
fish
7%
water
5%