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- DDTs contents in the surface sediment samples taken from 12 reservoirs and 2 lakes were measured by GC-ECD. 2004年秋季采集了河北12个水库和2个湖泊的表层沉积物样品;利用GC-ECD测定DDTs农药的含量;在此基础上分析了其残留与组成特征以及生态风险.
- Investigation on microelement in surface sediment in Sansha Bay was conducted,too. 此外,本项目较全面地对三沙湾表层沉积物的微量元素进行了调查研究。
- Having analyzed the samples of surface sediment from 46 sites around Xiamen Island, 217 species or subspecies in 62 genuses of diatoms were found. 对厦门岛沿岸46个取样点表层沉积样品分析,共发现硅藻62个属的217个种及亚种;
- The clay minerals in 65 surface sediment samples from the Changjiang River subaqueous delta were analyzed by using X ray diffraction (XRD) analysis technique. 摘要采用X射线衍射(XRD)分析技术分析了长江水下三角洲地区65个表层沉积物样品的粘土矿物。
- Abstract :By using the sea-floor visualization technique, we can directly observe sea-bottom landforms, surface sediment types and biotic communities in real time. 摘要: 海底可视技术是一种可以直观地对海底地形地貌、表层沉积物类型、生物群落等进行实时观察的调查手段。
- The sulfide contents in the surface sediment basically tended to be high in the north and to be low in the south, while the redox potential presented the opposite change tendency. 硫化物的垂直分布基本表现为随深度的增加而增加,氧化-还原电位的垂直分布基本表现为随深度的增加而降低。
- The results showed that both of water enverionment and biotic enverionment were good, and surface sediment enverionment was polluted in middle level besides that of some stations were seriously polluted, in which C_d plaied a main role in pollution. 结果表明,水质环境和生物环境处于良好水平;表层沉积环境处于污染水平,有的站达到严重污染水平,其中重金属镉的贡献率最大。
- Based on the survey data,the spatial distribution characteristics of surface sediment debris minerals in Shenzhen Dapeng Bay,Guangdong,are analyzed using the method of spatial analysis,geological statistics,interpolation and landscape ecology. 立足样品测试数据,利用空间分析、空间插值、地质统计以及景观生态学方法,深入分析了深圳大鹏湾表层沉积物碎屑矿物的空间分布特征,并使用球状模型对相应半变异函数进行理论建模。
- The experimental results show that an elevation of temperature can speed up the mass lea-ching rate of the HLW glass,enhance the surface sediment phase formation,and increase its surface thickness. 实验结果显示,高温会加速玻璃固化体的质量浸出率,增加表面层的厚度和加速表面生成物形成。
- The results indicate that the distribution of gross amount of REE in surface sediments well corresponds to that of the sediment types. 结果表明,表层沉积物中稀土元素总量的分布与沉积物类型有良好的对应性。
- Water content (WC) and loss on ignition (LOI) in surface sediments were 72.12%, 12.38%, respectively. 底泥中的含水率和烧失量平均为72.;12%25和12
- seawater and the surface sediment 水体与沉积物表层
- Radiolarian distribution in surface sediments of the northern and central South China Sea. 2002.;南海南部晚中新世的放射虫及其环境探讨。
- The paper studies the abundance of 31 elements (or oxides) in 29 surface sediments from Changjiang Estuary and its adjacent sea area. 本文对调查中所采集29个表层沉积物中的31个元素(或氧化物)的含量进行了分析。
- The content levels of OCPs tended to be DDTs>HCHs, and characterized by higher concentration levels in SPMs and lower in surface sediments. 研究表明;OCPs的含量水平有DDTs>HCHs的趋势; 悬浮物中污染物浓度高于表层沉积物.
- Total number 2472, 36 genera and 45 species are distinguished after the radiolaria fossils from 12 surface sediments in the Bering Sea are analysed. 通过对白令海 1 2个表层沉积物中微体生物化石放射虫的分析 ,共鉴别放射虫 2 4 72枚 ,计36属、45种。
- The gas bubbled to the surface of the water. 气体变成气泡升上水面。
- The surface of the liquid gradually crusted over. 液体表面渐渐地结了一层皮。
- The analysis of their surface sediments showes that the depositional features of the sediments are controlled by the energy conditions and material sources. 通过上述分析,提出了清澜港的潮汐通道及其邻近海域不会发生过量陆源碎屑堆积,原因在于本区沉积物的搬运、沉积和改造作用趋于保持动态平衡的认识。
- A breeze ruffled the surface of the lake. 一阵微风吹皱了湖面。