The photochemical reactions of active methylene containing such as fluorene, diphenymethane(DPM), di(1 naphthyl)methane (DNM) and triphenymethane(TPM) with N bromosuccinimide (NBS) were investigated The results show t...The photochemical reactions of active methylene containing such as fluorene, diphenymethane(DPM), di(1 naphthyl)methane (DNM) and triphenymethane(TPM) with N bromosuccinimide (NBS) were investigated The results show that monobromo derivatives can be selectively obtained when the ratio of NBS to a substrate is 1 1∶1 and that the reactivities of the substrates toward photochemical reaction are DNM > Fluorene> DPM > TPM The reaction mechanisms were also展开更多
In alkaline medium,a new flow injection chemiluminescent method has been developed for the determination of resveratrol,based on the inhibition of the chemiluminescence reaction between luminol and N-bromosuccinimide ...In alkaline medium,a new flow injection chemiluminescent method has been developed for the determination of resveratrol,based on the inhibition of the chemiluminescence reaction between luminol and N-bromosuccinimide by resveratrol.Conditions of this chemiluminescent reaction have been discussed and optimized.The linear range of determination is 6.0 10-7-1.0 10-5mg/mL for resveratrol.The detection limit is 8.15 10-8mg/mL.And the relative standard deviation（RSD）（n=11） is 0.35% for 5.0 10-6mg/mL resveratrol.The method has been applied to determine the content of resveratrol in grape skin,grape wine and traditional Chinese medicine polygonumcuspidatum seib with satisfactory results.The possible mechanism of the chemiluminescence reaction was also studied.展开更多
文摘The photochemical reactions of active methylene containing such as fluorene, diphenymethane(DPM), di(1 naphthyl)methane (DNM) and triphenymethane(TPM) with N bromosuccinimide (NBS) were investigated The results show that monobromo derivatives can be selectively obtained when the ratio of NBS to a substrate is 1 1∶1 and that the reactivities of the substrates toward photochemical reaction are DNM > Fluorene> DPM > TPM The reaction mechanisms were also
文摘In alkaline medium,a new flow injection chemiluminescent method has been developed for the determination of resveratrol,based on the inhibition of the chemiluminescence reaction between luminol and N-bromosuccinimide by resveratrol.Conditions of this chemiluminescent reaction have been discussed and optimized.The linear range of determination is 6.0 10-7-1.0 10-5mg/mL for resveratrol.The detection limit is 8.15 10-8mg/mL.And the relative standard deviation（RSD）（n=11） is 0.35% for 5.0 10-6mg/mL resveratrol.The method has been applied to determine the content of resveratrol in grape skin,grape wine and traditional Chinese medicine polygonumcuspidatum seib with satisfactory results.The possible mechanism of the chemiluminescence reaction was also studied.
