Hens＇ eggs and corresponding feeds were sampled at commercial farms. The eggs were separated into egg yolk and egg white and freeze dried. After pressure digestion, total element contents of Ca, P, Mg, S, Na, Fe, Mn,...Hens＇ eggs and corresponding feeds were sampled at commercial farms. The eggs were separated into egg yolk and egg white and freeze dried. After pressure digestion, total element contents of Ca, P, Mg, S, Na, Fe, Mn, Zn, Sr, Cu and Ba were detected by ICP-OES in the eggs, whereas, Pb, Ni, Sb, Sn, AI, Cd, Cr, Mo and V were all or largely below the detection limits. In addition, iodine was done by ICP-MS and Se after ashing with Mg-nitrate by hydride-generation-AAS. There were significant accumulations of P, S, Se and I in the egg yolk versus feed levels, as well as S and Na in the egg white. Just a few correlations between concentrations in feed and egg white resp. egg yolk were detected, indicating regulation mechanisms by homeostasis. Strontium showed the strongest trends between feeds and egg white and egg yolk, whereas, there was none for calcium. Among the main elements in the feeds, sulfur had the strongest effects on the egg compositions, e.g., on iodine and iron in the yolk and on sodium in the white, some of them might be non-linear.展开更多
Built by the royal family in the Ming Dynasty,the Da Bao En Temple is known as the greatest temple in ancient Nanjing,whose predecessor is the Chang Gan Temple built in the Six Dynasties.Archaeological excavations of ...Built by the royal family in the Ming Dynasty,the Da Bao En Temple is known as the greatest temple in ancient Nanjing,whose predecessor is the Chang Gan Temple built in the Six Dynasties.Archaeological excavations of the Da Bao En Temple and the underground palace of Chang Gan Temple built in the North Song Dynasty(AD960 AD1127) have been appraised as one of the 10 greatest archaeological discoveries in 2010 in China.Many artefacts discovered in the underground palace have shown their important historical meanings and scientific values,such as the Qibao King Asoka Tower,golden and silver coffins,Buddhist relics,the silk textiles,glasses,and spices etc.In this paper,stereomicroscope,SEM-EDS and LA-ICP-AES are used to investigate chemical composition,microstructure and current preservation status for the unearthed glasswares.The results indicate that the glass bottle coded as TH1 and the glass calyx coded as TN5 are made of lead-silicate glass,while the chemical composition of the glass bottle coded as TN9 is quite distinct from that of native glasswares.All three articles have been weathered in some degrees.Given the shape,it is deduced that TH1 is a typical glassware used in burying Buddhist relics at that time,TN5 a domestic glassware with typical Sassanian style,and TN9 an imported Islamic glass,providing important information about culture exchanges between China and the foreign countries in the North Song Dynasty.展开更多
文摘Hens＇ eggs and corresponding feeds were sampled at commercial farms. The eggs were separated into egg yolk and egg white and freeze dried. After pressure digestion, total element contents of Ca, P, Mg, S, Na, Fe, Mn, Zn, Sr, Cu and Ba were detected by ICP-OES in the eggs, whereas, Pb, Ni, Sb, Sn, AI, Cd, Cr, Mo and V were all or largely below the detection limits. In addition, iodine was done by ICP-MS and Se after ashing with Mg-nitrate by hydride-generation-AAS. There were significant accumulations of P, S, Se and I in the egg yolk versus feed levels, as well as S and Na in the egg white. Just a few correlations between concentrations in feed and egg white resp. egg yolk were detected, indicating regulation mechanisms by homeostasis. Strontium showed the strongest trends between feeds and egg white and egg yolk, whereas, there was none for calcium. Among the main elements in the feeds, sulfur had the strongest effects on the egg compositions, e.g., on iodine and iron in the yolk and on sodium in the white, some of them might be non-linear.
基金supported by State Administration of Cultural Heritage for "Research of Protection Technology for Nanjing Da Bao En Temple"the Innovation Key Program of the Chinese Academy of Sciences (GrantNo. KZCX2-EW-QN607)
文摘Built by the royal family in the Ming Dynasty,the Da Bao En Temple is known as the greatest temple in ancient Nanjing,whose predecessor is the Chang Gan Temple built in the Six Dynasties.Archaeological excavations of the Da Bao En Temple and the underground palace of Chang Gan Temple built in the North Song Dynasty(AD960 AD1127) have been appraised as one of the 10 greatest archaeological discoveries in 2010 in China.Many artefacts discovered in the underground palace have shown their important historical meanings and scientific values,such as the Qibao King Asoka Tower,golden and silver coffins,Buddhist relics,the silk textiles,glasses,and spices etc.In this paper,stereomicroscope,SEM-EDS and LA-ICP-AES are used to investigate chemical composition,microstructure and current preservation status for the unearthed glasswares.The results indicate that the glass bottle coded as TH1 and the glass calyx coded as TN5 are made of lead-silicate glass,while the chemical composition of the glass bottle coded as TN9 is quite distinct from that of native glasswares.All three articles have been weathered in some degrees.Given the shape,it is deduced that TH1 is a typical glassware used in burying Buddhist relics at that time,TN5 a domestic glassware with typical Sassanian style,and TN9 an imported Islamic glass,providing important information about culture exchanges between China and the foreign countries in the North Song Dynasty.
