[Objective] The research aimed to study the determination of 16 kinds of OCPs in water by liquid-liquid extraction -GC. [Method] The new method for determining 16 kinds of OCPs in water by liquid-liquid extraction -GC...[Objective] The research aimed to study the determination of 16 kinds of OCPs in water by liquid-liquid extraction -GC. [Method] The new method for determining 16 kinds of OCPs in water by liquid-liquid extraction -GC was established, and the influencing factors such as nitrogen pressure and water bath temperature were discussed. [ Result] Detection limit of the method was from 3.2 to 14.1 ng/L, the relative standard deviation was between 4.0% and 9.6%, and the average recovery ranged from 80.8% to 106.0%. By optimizing nitrogen pressure and water bath temperature in the sample pretreatment process, when nitrogen pressure was ＋0.087 kPa, and water bath temperature was ±36 ℃, recovery effect of this method was better. [ Conclusion] The determination method had accurate qualitative and quantitative results, and met detection requirement of 16 kinds of OCPs in water.展开更多
Along with China’s economic growth,the notable rise of its universities and innovation system has inspired growing interest in how the higher education institutions(HEIs)of the European Union(EU)cooperate with Chines...Along with China’s economic growth,the notable rise of its universities and innovation system has inspired growing interest in how the higher education institutions(HEIs)of the European Union(EU)cooperate with Chinese HEIs.Beginning with a review of China-EU higher education relations,this paper presents a case study of a Sino-Danish collaborative programme in which cooperation and programme quality were limited by both partners’different aims over time,and their alternate quality assurance systems.We suggest a proper collaborative level and discipline should be developed before the establishment of cooperation by taking relevant policies,merits and disadvantages of both partners,into consideration.This paper also points out that limits in collaboration can be alleviated,if a number of elements can be used effectively,such as China’s significant EU knowledge diaspora.Given this and other listed factors,including favorable policies introduced by the Chinese government,there are substantial prospects for extending China-EU collaborative relations and exchanges.展开更多
文摘[Objective] The research aimed to study the determination of 16 kinds of OCPs in water by liquid-liquid extraction -GC. [Method] The new method for determining 16 kinds of OCPs in water by liquid-liquid extraction -GC was established, and the influencing factors such as nitrogen pressure and water bath temperature were discussed. [ Result] Detection limit of the method was from 3.2 to 14.1 ng/L, the relative standard deviation was between 4.0% and 9.6%, and the average recovery ranged from 80.8% to 106.0%. By optimizing nitrogen pressure and water bath temperature in the sample pretreatment process, when nitrogen pressure was ＋0.087 kPa, and water bath temperature was ±36 ℃, recovery effect of this method was better. [ Conclusion] The determination method had accurate qualitative and quantitative results, and met detection requirement of 16 kinds of OCPs in water.
文摘Along with China’s economic growth,the notable rise of its universities and innovation system has inspired growing interest in how the higher education institutions(HEIs)of the European Union(EU)cooperate with Chinese HEIs.Beginning with a review of China-EU higher education relations,this paper presents a case study of a Sino-Danish collaborative programme in which cooperation and programme quality were limited by both partners’different aims over time,and their alternate quality assurance systems.We suggest a proper collaborative level and discipline should be developed before the establishment of cooperation by taking relevant policies,merits and disadvantages of both partners,into consideration.This paper also points out that limits in collaboration can be alleviated,if a number of elements can be used effectively,such as China’s significant EU knowledge diaspora.Given this and other listed factors,including favorable policies introduced by the Chinese government,there are substantial prospects for extending China-EU collaborative relations and exchanges.
