ICP-MS analytical technology was used to analyze the concentration of 13 heavy metals in surface water,pore water in sediment,suspended particulate matter,and sediment of intertidalite of Tianjin.
利用ICP-MS分析技术,系统测定了天津沿海潮间带表层海水、悬浮物、沉积物及沉积物间隙水中13种重金属元素的含量。
The contents and their distribution pattern of rare earth elements (REEs) in intertidalite of Tianjin were studied, which is based on separation and enrichment of P507 extraction resin and ICP-MS analytical technology.
以天津沿海潮间带为对象,通过P507萃淋树脂分离富集和ICP MS测定,探讨了潮间带海水和沉积物各要素中稀土元素的含量及分布模式。
The geochemical features of rare earth elements(REEs) in intertidalite sediments of Tianjin were studied.
研究了天津沿海潮间带沉积物中稀土元素 (REE)的地球化学特性以及污染条件下稀土元素的环境行为特征 ,通过稀土分布模式特征探讨了潮间带沉积物的物质来源。
Contents of heavy metals in marine animals along intertidal zone at Shenzhen;
深圳市潮间带动物体内的重金属含量
Present evaluation and analysis of water environmental quality in the sublittoral intertidal zone near Nanji Archipelago;
南麂列岛附近海域潮间带水环境质量现状评价与分析
Species diversity of benthic mollusc in different habitats of intertidal zone in shangchuan island;
上川岛潮间带不同生境底栖软体动物物种多样性初步研究
Fluxes of CH_4,CO_2 and N_2O from Yangtze estuary intertidal flat in summer season;
夏季长江口潮间带CH_4、CO_2和N_2O通量特征
Denitrification, nitrous oxide emission and adsorption in intertidal flat,Yangtze Estuary, in summer;
夏季长江河口潮间带反硝化作用和N_2O的排放与吸收
Elementary research on green-house gas emissions in Chongming east intertidal flat of the Changjiang Estuary;
长江口崇明东滩潮间带温室气体排放初步研究
Geochemical study of heavy metal pollution in intertidal zone sediments;
潮间带沉积物重金属污染的地球化学研究
The grain size,TOC and heavy metal contents of core sediments were analyzed in order to study the geochemical characteristics,contamination features and the spatial and vertical distribution characters for heavy metals of tidal zones in Bohai Bay.
2003-11采集了渤海湾天津段北至大沽口,南到岐口海域潮间带3个沉积物柱状样,对沉积物的粒度、有机质、重金属含量进行分析,对渤海湾潮间带沉积物柱状样的地化性质、重金属污染概况以及重金属的空间、垂向分布特点进行了研究。
Three undisturbed cores were sampled from the tidal zone of Jiaojiang estuary of Zhejiang in the May of 2003.
3个未扰动柱状样分别采自浙江椒江口潮间带高、中、低潮带,用冷盐酸法测定了沉积物中酸可挥发硫化物(AVS)及同步提取金属(SEM),分析了不同潮位沉积物剖面类型及形成机理,并根据SEM-Me/AVS比值评价痕量金属(Cu、Pb、Zn、Cd、Cr、As、Hg及Ni)的活性和生物有效性。
Simulation test on collision of vehicles on guard-rail of expressway median;
高速公路中间带护栏碰撞仿真实验
Corrugated-beam guard-rail height of expressway median;
高速公路中间带波形梁护栏高度
Safety lateral clearance of expressway median;
高速公路中间带安全侧向净距值
The localization theorem of wavelet frame expansion formula in strip of Sobolev spaces is established,such that a localization theorem of wavelet frame expansion in L 2(R) is only a particular example of this theorem when S =0.
建立了 Sobolev空间带 HS( R) ( S≥ 0 )的小波框架展开的局部化定理 ,使得 L2 ( R)的小波框架展开局部化 ,只是该定理 S=0的特
Relation between soil salinity in intertidal zone and electric conductivity;
潮间带土壤盐度与电导率的关系
Study on intertidal macrobenthos in North Branch of Changjiang Estuary;
长江口北支水域潮间带大型底栖动物研究
The electronic properties of intermediate band of GaN materials are studied by using the local spin density approximation calculations,where Cr transition metal substitutes for N in the GaN semiconductor with an atomic concentration of 1.
采用局部旋转密度近似的计算方法研究GaN材料中间带的电学性质,用Cr跃迁金属替代GaN半导体中的N原子,其原子质量分数为1。
This material,characterized by an isolated and partially filled intermediate band,is a candidate for high-efficiency solar cells.
这种材料用孤立和部分填充的中间带表征,是高效太阳电池的候选材料。