Objective To assess the net health effect caused by the consumption of specific marine species based on Benefit-Risk Analysis for Foods （BRAFO）-tiered approach. Methods Twenty species were collected from the Zhousha...Objective To assess the net health effect caused by the consumption of specific marine species based on Benefit-Risk Analysis for Foods （BRAFO）-tiered approach. Methods Twenty species were collected from the Zhoushan Archipelago, China. Concentrations of n-3 long-chain polyunsaturated fatty acids, methyl mercury （MeHg）, and dioxin-like compounds （DLCs） in the samples were analyzed for benefit risk assessment based on BRAFO-tiered approach. Results Based on the BRAFO-tiered approach, reference scenario （no intake） and alternative scenario （intake of specific species of 200 g/week） were determined. The exposure to MeHg/DLCs via alternative scenario of all studied species did not exceed provisional tolerable weekly/monthly intake. However, the adult population with high DLCs exposure in China would significantly exceed the upper limit of DLCs via an additional alternative scenario of some species such as Auxis thazard. The results of deterministic computation showed that alternative scenario of all studied species generated clear net beneficial effects on death prevention and child IQ gain. Conclusion The alternative scenario of all studied species could be recommended to population with average DLCs exposure, and the reference scenario of species with relatively high DLCs concentration could be recommended to population exposed to high DLCs.展开更多
Present photocatalysts for the synchronous cleanup of pharmaceuticals and heavy metals have several drawbacks,including inadequate reactive sites,inefficient electron–hole disassociation,and insufficient oxidation an...Present photocatalysts for the synchronous cleanup of pharmaceuticals and heavy metals have several drawbacks,including inadequate reactive sites,inefficient electron–hole disassociation,and insufficient oxidation and reduction power.In this research,we sought to address these issues by using a facile solvothermal-photoreduction route to develop an innovative plasmonic S-scheme heterojunction,Au/MIL-101(Fe)/BiOBr.The screened-out Au/MIL-101(Fe)/BiOBr(AMB-2)works in a durable and high-performance manner for both Cr(VI)and norfloxacin(NOR)eradication under visible light,manifesting up to 53.3 and 2 times greater Cr(VI)and NOR abatement rates,respectively,than BiOBr.Remarkably,AMB-2's ability to remove Cr(VI)in a Cr(VI)-NOR coexistence system is appreciably better than in a sole-Cr(VI)environment;the synergy among Cr(VI),NOR,and AMB-2 results in the better utilization of photo-induced carriers,yielding a desirable capacity for decontaminating Cr(VI)and NOR synchronously.The integration of MOF-based S-scheme heterojunctions and a plasmonic effect contributes to markedly reinforced photocatalytic ability by increasing the number of active sites,augmenting the visible-light absorbance,boosting the efficient disassociation and redistribution of powerful photo-carriers,and elevating the generation of reactive substances.We provide details of the photocatalytic mechanism,NOR decomposition process,and bio-toxicity of the intermediates.This synergistic strategy of modifying S-scheme heterojunctions with a noble metal opens new horizons for devising excellent MOF-based photosystems with a plasmonic effect for environment purification.展开更多
基金funded by the National Nature Science of Foundation of China(No.81172675)the National Key Basic Research Program of China(No.2012CB720804)
文摘Objective To assess the net health effect caused by the consumption of specific marine species based on Benefit-Risk Analysis for Foods （BRAFO）-tiered approach. Methods Twenty species were collected from the Zhoushan Archipelago, China. Concentrations of n-3 long-chain polyunsaturated fatty acids, methyl mercury （MeHg）, and dioxin-like compounds （DLCs） in the samples were analyzed for benefit risk assessment based on BRAFO-tiered approach. Results Based on the BRAFO-tiered approach, reference scenario （no intake） and alternative scenario （intake of specific species of 200 g/week） were determined. The exposure to MeHg/DLCs via alternative scenario of all studied species did not exceed provisional tolerable weekly/monthly intake. However, the adult population with high DLCs exposure in China would significantly exceed the upper limit of DLCs via an additional alternative scenario of some species such as Auxis thazard. The results of deterministic computation showed that alternative scenario of all studied species generated clear net beneficial effects on death prevention and child IQ gain. Conclusion The alternative scenario of all studied species could be recommended to population with average DLCs exposure, and the reference scenario of species with relatively high DLCs concentration could be recommended to population exposed to high DLCs.
基金supported by the National Natural Science Foundation of China(U1809214)the Natural Science Foundation of Zhejiang Province(LY20E080014)the Science and Technology Project of Zhoushan City(2022C41011).
文摘Present photocatalysts for the synchronous cleanup of pharmaceuticals and heavy metals have several drawbacks,including inadequate reactive sites,inefficient electron–hole disassociation,and insufficient oxidation and reduction power.In this research,we sought to address these issues by using a facile solvothermal-photoreduction route to develop an innovative plasmonic S-scheme heterojunction,Au/MIL-101(Fe)/BiOBr.The screened-out Au/MIL-101(Fe)/BiOBr(AMB-2)works in a durable and high-performance manner for both Cr(VI)and norfloxacin(NOR)eradication under visible light,manifesting up to 53.3 and 2 times greater Cr(VI)and NOR abatement rates,respectively,than BiOBr.Remarkably,AMB-2's ability to remove Cr(VI)in a Cr(VI)-NOR coexistence system is appreciably better than in a sole-Cr(VI)environment;the synergy among Cr(VI),NOR,and AMB-2 results in the better utilization of photo-induced carriers,yielding a desirable capacity for decontaminating Cr(VI)and NOR synchronously.The integration of MOF-based S-scheme heterojunctions and a plasmonic effect contributes to markedly reinforced photocatalytic ability by increasing the number of active sites,augmenting the visible-light absorbance,boosting the efficient disassociation and redistribution of powerful photo-carriers,and elevating the generation of reactive substances.We provide details of the photocatalytic mechanism,NOR decomposition process,and bio-toxicity of the intermediates.This synergistic strategy of modifying S-scheme heterojunctions with a noble metal opens new horizons for devising excellent MOF-based photosystems with a plasmonic effect for environment purification.
