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The new chemical method for identifying and quantifying Sudan I (1-[(2,4-dimethylphenyl)azo]-2-naphthalenol) from chilli species is devised to overcome the shortcoming with complex operation, longer analytical period of High performance liquid chromatography (HPLC) assay. Sudan I complexed with Cu2+ leads to the shift of visible absorption wavelength from 478 nm to 526 nm. The major product is the...
The chemical composition of fresh Cinnamomum camphora were separated and analyzed by GC/MS. It was determined that 17 relative content by area normalization. 17 compounds of the extractives were identified. The main and abundant constituents were Eucalyptol, 3-Cyclohexen-1-ol,bicyclo[3.1.0]hexane, 4-methylene, beta.-Pinene, 3-Cyclohexen-1-ol, 4-methyl-1-(1-methylethyl), 1,3-Cyclohexadiene, 1-methyl-4-(1-methylethyl),...
The effects of different pH values on the reduction of nitrobenzene (NB or ArNO2) by zero-valent iron (ZVI) were studied in groundwater through batch experiments. The concentrations of NB and its reduction product aniline were determined during the process of reaction. The changes in the reduction rates for nitrobenzene, the quantities of aniline formed, and the reaction kinetics during the reduction...
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