In this paper, we use pre-column 2 times low-temperature cryo-trap enrichment--gas chromatography（GC） /nitrogen and phosphorus detector（NPD）to detect and analyze phosphine in Arctic pole area for the first time. T...In this paper, we use pre-column 2 times low-temperature cryo-trap enrichment--gas chromatography（GC） /nitrogen and phosphorus detector（NPD）to detect and analyze phosphine in Arctic pole area for the first time. The results show phosphine exists in all of the samples in Arctic pole biosphere and phosphine concentration in Arctic atmosphere is between 18.54- 132.18 ng/m^3, almost the same as that in Antarctic atmosphere; phosphine concentration in Dalian bay sea surface sediments is between 116. 8- 554.3 ng/kg, almost the same as that reported in Jiao-zhou bay. Our research of phosphine will shed new light on the mechanisms showing how the phosphorus supplement influences the biogeochemical cycle and global warming.展开更多
Since China opening to outside world,the economy in the Pearl(Zhujiang)River Delta(PRD)has been dou-ble digit growth.It has been known as one of mature fast growth areas in the world and become the model and hope of C...Since China opening to outside world,the economy in the Pearl(Zhujiang)River Delta(PRD)has been dou-ble digit growth.It has been known as one of mature fast growth areas in the world and become the model and hope of Chi-nese reformand opening to outside wo rld.The regional development in PRD is the outcome of polarization effects .The polar-ization effects actually are extension of international regional divis ion and a combination of Hongkong’s i nfluence and re-form and open-door policies on the ma inland.Since the 1990s,driven by knowledge-based economy,the PRD has f urther adjusted the industrial structure a nd achieved good progress in upgradi ng industrial structure.Its high te chnology industry has developed quickly and the econom ic internationalization has deepen ed,meanwhile,the region is going th rough transforma-tion and some new trends have begun to appear,which include:university t owns springing up,industrial globalization and the construction of Hi-tech develop ment zones.The paper suggests that w ith the economic growth changing fro m relying on the low level production elements to relying on high level production ele ments,the regional policies in Guan gdong Province should develop correspondingly:1)make a plan to prohibite the blind con struction in innovative spatial con struc-tions;2)make measures to attract the overseas talents to establish a pool of talen t;3)work out the favorable policies for absorbing larger capital;4)formulate the policy of attracting a cluster of industries to speed up the upgrade of industrial development.展开更多
基金Supported by the National High Technology Research and Development Programme of China ( No. 2008AA09Z114)the Polar Science Research Foundation ( No. 20070214)the Opening Foundation ( No. PCRRF08016) of State Key Laboratory of Pollution Control and Resource Reuse Nanjing University and the National Ocean science Foundation (No. 2008614)
文摘In this paper, we use pre-column 2 times low-temperature cryo-trap enrichment--gas chromatography（GC） /nitrogen and phosphorus detector（NPD）to detect and analyze phosphine in Arctic pole area for the first time. The results show phosphine exists in all of the samples in Arctic pole biosphere and phosphine concentration in Arctic atmosphere is between 18.54- 132.18 ng/m^3, almost the same as that in Antarctic atmosphere; phosphine concentration in Dalian bay sea surface sediments is between 116. 8- 554.3 ng/kg, almost the same as that reported in Jiao-zhou bay. Our research of phosphine will shed new light on the mechanisms showing how the phosphorus supplement influences the biogeochemical cycle and global warming.
文摘Since China opening to outside world,the economy in the Pearl(Zhujiang)River Delta(PRD)has been dou-ble digit growth.It has been known as one of mature fast growth areas in the world and become the model and hope of Chi-nese reformand opening to outside wo rld.The regional development in PRD is the outcome of polarization effects .The polar-ization effects actually are extension of international regional divis ion and a combination of Hongkong’s i nfluence and re-form and open-door policies on the ma inland.Since the 1990s,driven by knowledge-based economy,the PRD has f urther adjusted the industrial structure a nd achieved good progress in upgradi ng industrial structure.Its high te chnology industry has developed quickly and the econom ic internationalization has deepen ed,meanwhile,the region is going th rough transforma-tion and some new trends have begun to appear,which include:university t owns springing up,industrial globalization and the construction of Hi-tech develop ment zones.The paper suggests that w ith the economic growth changing fro m relying on the low level production elements to relying on high level production ele ments,the regional policies in Guan gdong Province should develop correspondingly:1)make a plan to prohibite the blind con struction in innovative spatial con struc-tions;2)make measures to attract the overseas talents to establish a pool of talen t;3)work out the favorable policies for absorbing larger capital;4)formulate the policy of attracting a cluster of industries to speed up the upgrade of industrial development.
