In this paper we present petrology and geochemistry from a range of metasomatically altered rocks within the Eastern Gawler Craton mineralised province of South Australia.The rocks represent four protolith types;grani...In this paper we present petrology and geochemistry from a range of metasomatically altered rocks within the Eastern Gawler Craton mineralised province of South Australia.The rocks represent four protolith types;granite,basalt,non-carbonate metasediment and calc-silicate metasediment.Alteration paragenesis varies in intensity and between the protolith types.I.The alteration paragenesis of granites has the first pervasive chlorite and the second filled hematite with two generations of chalcopyrite.After the展开更多
Glyphosate,a widely used herbicide due to the broad-spectrum and high-efficiency properties,has the potential to accumulate in the human body via agricultural food and water sources throughout the food chain.Its safet...Glyphosate,a widely used herbicide due to the broad-spectrum and high-efficiency properties,has the potential to accumulate in the human body via agricultural food and water sources throughout the food chain.Its safety for both human health and aquatic ecosystems remains a topic of significant debate.In this study,the presence of glyphosate could be directly detected through a notable colorimetric change in an aqueous solution.For this purpose,a silver nanoparticle-functionalized copper porphyrin metal-organic framework(AgNPs/Cu-TCPP)nanozyme was conveniently prepared for colorimetric sensing of glyphosate.The as-synthesized nanozyme that modified AgNPs with Cu-TCPP metal-organic framework as the precursor,has excellent peroxidase mimetic activity and specific recognition performance of glyphosate.The nanozyme demonstrated the ability to catalyze the oxidation of 3,3,5,5-tetramethylbenzidine(TMB)using H_(2)O_(2),resulting in a marked change in color.When glyphosate was added,which bonded with Cu^(2+),led to the occupation of the surface-active sites of the nano-zyme,thereby making its catalytic performance ineffective.The concentration of glyphosate exhibited a linear range spanning from 2 to 400μmol L^(-1),and the limit of detection was 0.67μmol L^(-1)(S/N=3).The colorimetric sensing approach employing AgNPs/Cu-TCPP nanozyme exhibits remarkable selectivity and reproducibility,enabling the detection of real samples with recovery rates of 98.3%-103.5%,indicating its potential applicability in safeguarding water and food quality.展开更多
Comprehensive Summary The size and size distribution of polymeric nanoparticles have great impact on their physicochemical and biological properties.Polymerization-induced self-assembly(PISA)has been demonstrated to b...Comprehensive Summary The size and size distribution of polymeric nanoparticles have great impact on their physicochemical and biological properties.Polymerization-induced self-assembly(PISA)has been demonstrated to be an efficient method to fabricate various polymeric nanoparticles,among which polymeric vesicles have attracted great interest due to their unique hollow structure.展开更多
文摘In this paper we present petrology and geochemistry from a range of metasomatically altered rocks within the Eastern Gawler Craton mineralised province of South Australia.The rocks represent four protolith types;granite,basalt,non-carbonate metasediment and calc-silicate metasediment.Alteration paragenesis varies in intensity and between the protolith types.I.The alteration paragenesis of granites has the first pervasive chlorite and the second filled hematite with two generations of chalcopyrite.After the
基金supported by the National Natural Science Foundation of China(22076067).
文摘Glyphosate,a widely used herbicide due to the broad-spectrum and high-efficiency properties,has the potential to accumulate in the human body via agricultural food and water sources throughout the food chain.Its safety for both human health and aquatic ecosystems remains a topic of significant debate.In this study,the presence of glyphosate could be directly detected through a notable colorimetric change in an aqueous solution.For this purpose,a silver nanoparticle-functionalized copper porphyrin metal-organic framework(AgNPs/Cu-TCPP)nanozyme was conveniently prepared for colorimetric sensing of glyphosate.The as-synthesized nanozyme that modified AgNPs with Cu-TCPP metal-organic framework as the precursor,has excellent peroxidase mimetic activity and specific recognition performance of glyphosate.The nanozyme demonstrated the ability to catalyze the oxidation of 3,3,5,5-tetramethylbenzidine(TMB)using H_(2)O_(2),resulting in a marked change in color.When glyphosate was added,which bonded with Cu^(2+),led to the occupation of the surface-active sites of the nano-zyme,thereby making its catalytic performance ineffective.The concentration of glyphosate exhibited a linear range spanning from 2 to 400μmol L^(-1),and the limit of detection was 0.67μmol L^(-1)(S/N=3).The colorimetric sensing approach employing AgNPs/Cu-TCPP nanozyme exhibits remarkable selectivity and reproducibility,enabling the detection of real samples with recovery rates of 98.3%-103.5%,indicating its potential applicability in safeguarding water and food quality.
基金the financial support of the National Natural Science Foundation of China(Nos.22171255,21774113,and 52021002)。
文摘Comprehensive Summary The size and size distribution of polymeric nanoparticles have great impact on their physicochemical and biological properties.Polymerization-induced self-assembly(PISA)has been demonstrated to be an efficient method to fabricate various polymeric nanoparticles,among which polymeric vesicles have attracted great interest due to their unique hollow structure.
