Compound-specific stable isotope analysis (CSIA) is an efficient method for source apportionment and the identification of transformation process in organic compounds. However, most studies CSIA are still limited to laboratory experiments. Few used have situ environment due complexity environmental samples. Therefore, a purification analyzing carbon ratios three phenolic endocrine disrupting co...

Plants are a rich source of secondary metabolites or chemical constituents with interesting biological activities. Therefore, thorough validation the herbal agents has emerged as new branch science emphasizing and prioritizing standardization natural drugs products because several these phytochemicals have complementary overlapping mechanism action. Mass spectrometry coupled chromatographic sep...

The methanolic extract of Curcuma longa L. rhizome was subjected to Gas Chromatography-Mass Spectrometric (GC-MS) analysis. chromatographic investigation the showed 27 constituents which 19 compounds were newly found from C. longa. Here, peaks obtained in total ion chromatogram compared with National Institute Standards and Technology (NIST) database for identification constituents. most plenti...