Keyphrases
Swine Manure
100%
Matrix Effect
100%
Conjugated Estrogens
100%
Analytical Problems
100%
Free Estrogens
100%
Manure
80%
Estrogen
40%
Liquid Sample
40%
Solid Samples
40%
Pig Farm
20%
Methanol
20%
Liquid Chromatography Mass Spectrometer
20%
Gas Chromatography-mass Spectrometry
20%
Extraction Methods
20%
Animal Manure
20%
Ethyl Acetate
20%
Calibration Method
20%
Deuterium Labeling
20%
Percent Recovery
20%
High Performance Liquid Chromatograph
20%
Environmental Estrogens
20%
Excellent Sensitivity
20%
Chromatographic Methods
20%
Isotope Internal Standard
20%
Aminopropyl
20%
Hydrophilic-lipophilic Balance
20%
Total Estrogens
20%
13C-labelled Internal Standards
20%
Matrix Interference
20%
Free Hormones
20%
Agricultural and Biological Sciences
Spectrometer
100%
Pig
50%
Animal Manures
50%
Ethyl Acetate
50%
Reproducibility
50%
Hydrophilic-Lipophilic Balance
50%
Chemistry
Chromatograph
100%
Methanol
50%
Instrument Calibration
50%
Ethyl Acetate
50%
Deuterium
50%
Chemical Engineering
Methanol
100%
Deuterium
100%