Analytes Absorption spectroscopy 4 analytic method 4 reproducibility 4 sensitivity and specificity 4 2,6 dichlorophenolindophenol 2 Acetonitrile 2 Adrenergic beta-Agonists 2 Adrenergic beta-Antagonists 2 Alkalinity 2 Alprenolol 2 Amines 2 Analytical applications 2 Analytical determination 2 Analytical science 2 Aquatic organisms 2 Aqueous-organic buffers 2 Atomic absorption spectrometry 2 Atomic absorption spectroscopy 2 Atoms 2 Back ground electrolytes 2 Baseline separations 2 Basic drugs 2 Beta-agonists 2 Beta-blockers 2 Biochemical oxygen demand 2 Bioelectric Energy Sources 2 Biological Assay 2 Biopolymers 2 Brain 2