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A method using solid-phase extraction for cleanup, followed by high-performance liquid chromatography with ultraviolet detection (HPLC/UV), was developed for the determination of forchlorfenuron residues in Fruit and vegetable. The forchlorfenuron is extracted from the sample (15 g) with ethyl acetate (30 mL), and the extract is loaded onto an ENVI-18 column. The forchlorfenuron is eluted with methanol-water...
China has the rich bamboo resource, moreover, the species and yield of bamboo both are the first in the world. The extract of bamboo root was often used to cure some intractable diseases in the countryside of China, but the components of bamboo root extract is still unresolved. In order to expedite medicinal application of bamboo root, and to provide further scientific foundation for its top value-added...
A trace analytical method of o-chloropheno, chlorobenzene and ethylbenzene in water had been developed by using salting-out phase separation microextraction coupled to high performance liquid chromatography. A Diamonsil C18 column (5μm, 250×4.6mm i.d.) was used for separation at 30°C with detection wavelength at 220nm; The mobile phase was a mixture of methanol and water (the ratio of volume was 53:47),...
Headspace gas chromatography-mass spectrometry (GC-MS) was used to study the volatile flavor compounds from submerged cultured Ganoderma sinense mycelium. Over twenty-six different volatile flavor compounds from the cultured G. sinense mycelium were detected, and sixteen compounds were identified, which were mainly ketones, alcohols and lactones. Among all the compounds detected in the mycelium, the...
Methods of the off-line and on-line solid phase extraction (SPE) combined with liquid chromatographic (LC) analysis were compared in respects of separation effect, breakthrough volume, precision and detection limits for polycyclic aromatic hydrocarbons (PAHs). Results showed that the on-line mode is slightly preferred than the off-line one except for the early eluting compounds, naphthalene and biphenyl,...
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