Reassessment of the Distribution of Mantle CO2 in the Bohai Sea, China: The Perspective from the Source and Pathway System

Research on the distribution of mantle CO₂should involve comprehensive analysis from CO₂source to accumulation.The crust-mantle pathway system is the key controlling factor of the distribution of mantle CO₂,but has received little attention.The pathway system and controlling factors of CO₂distribution in the Bohai Sea are analyzed using data on fault styles and information on the mantle and lithosphere.The relation between volcanic rocks and the distribution of mantle CO₂is reassessed using age data for CO₂accumulations.The distribution of mantle CO₂is controlled by uplift of the asthenosphere and upper mantle,magma conduits in the mantle and fault systems in the crust.Uplifted regions of the asthenosphere are accumulation areas for CO₂.The area with uplift of the Moho exhibits accumulation of mantle CO₂at depth.CO₂was mainly derived from vertical migration through the upper mantle and lower crust.The fault style in the upper crust controls the distance of horizontal migration and the locations of CO₂concentrations.The distribution of mantle CO₂and volcanic rocks are not the same,but both probably followed the same pathways sometimes.Mantle CO₂in the Bohai Sea is concentrated in the Bozhong sag and the surrounding area,particularly in a trap that formed before 5.1 Ma and is connected to crustal faults(the Bozhang faults)and lithospheric faults(the Tanlu faults).     

邻苯二甲酸二乙酯(DEP)在罗非鱼(Oreochromis niloticus × O.aureus)体内代谢动力学和残留研究

采用反相高效液相色谱.紫外检测法,测定了罗非鱼血浆、皮肤、肌肉、心肌和大脑中邻苯二甲酸二乙酯(DEP)含量,并研究了DEP在罗非鱼体内代谢动力学和残留特征.将DEP以20mg/kg灌服罗非鱼后,取样测定不同时间点血浆和组织中的DEP浓度,并利用3p97药物动力学软件并结合Excel 2003软件对实验数据进行处理和分析...