Chemistry
Sample
100%
Isotope
53%
Volume
53%
3,4-methylenedioxymethamphetamine
53%
Impurity
33%
Hydrochloride
30%
Synthesis (Chemical)
26%
Street Drug
26%
Methamphetamine
26%
Stable Isotope
26%
Chemical Element
26%
Inductively Coupled Plasm Mass Spectrometry (ICPMS)
26%
Pattern Recognition
26%
Analytical Method
26%
Concentration
17%
Base
17%
Gas Chromatography Mass Spectrometry (GCMS)
16%
Chemical Reaction Product
13%
Solvent
13%
Atom
13%
Isotope Ratio Mass Spectrometry
10%
Preparative Method
8%
Salting Out
6%
Illicit Drug
6%
Pseudoephedrine Hydrochloride
6%
Methamphetamine Hydrochloride
5%
Earth and Planetary Sciences
Sample
46%
Isotope Ratios
40%
Mass Spectroscopy
40%
Isotopic Composition
30%
Drug
26%
Street
26%
Difference
26%
Stable Isotope
26%
Comparison
26%
Pattern Recognition
26%
Feasibility
26%
Impurity
26%
Abundance
26%
Gas Chromatography Mass Spectrometry
16%
Delta
13%
Datum
10%
Discrimination
10%
Route
6%
Data Set
6%
Set
6%
Cluster Analysis
6%
Discriminant Analysis
6%
Condition
6%
Starting
6%
Principal Components Analysis
6%
Target
6%
Pharmacology, Toxicology and Pharmaceutical Science
Isotope
53%
MDMA
35%
Element
26%
Birch
26%
Inductively Coupled Plasma
26%
Methamphetamine
26%
Base
17%
Drug
17%
Solvent
13%
Ephedrine
8%
Domestic Chemical
6%
Absence
6%
Illicit Drug
6%