thema EDItEUR::P Mathematics and Science::PN Chemistry::PNF Analytical chemistry Law of the sea Marine Scientific Research (MSR) UNCLOS and South China Sea UNCLOS and emerging global maritime challenges amino acids, volatile compounds, short-chain fatty acids, principal components analysis, quality biomedical analysis chemometrics flavor liquid chromatography machine learning algorithms mass spectrometry mathematical modeling, thermodynamics, electrolytes, buffer capacity, buffer pharmaceutical analysis sample preparation spectra thema EDItEUR::J Society and Social Sciences::JP Politics and government thema EDItEUR::L Law::LB International law::LBB Public international law thema EDItEUR::P Mathematics and Science::PD Science: general issues volatile compounds wavelet transform