沉积残渣

The content of total Phosphorus was very high, with the average of 2.63mg/g, while the nitrite was very low and there was no relative chemic counterbalance among nitrate, nitrite and ammoniate, because the inorganic nitrogen circle was also affected by organic nitrogen in water and sediments.

以滇池马村湾和海东湾为研究对象，对其沉积物－间隙水－上覆水三界面中的磷、氮形态作研究，其中钙结合态磷占的比例最大，其次是有机/细菌聚合态磷和残渣磷；总氮含量很高，平均值为2.63 mg/g，而亚硝酸盐氮含量很低，其它三种无机氮形态（硝酸盐氮、亚硝酸盐氮和氨氮）之间并不存在恒定的化学计量关系，这主要是无机氮循环还受水体和沉积物中有机氮的影响。

So not only can the clearance food remnant, the tooth noodles germ spot and dental calculus filth, prevent°from the formation and deposition of tooth stone calculus, and can also rise to massage a gum, promote blood circulation, strengthen a tooth to organize for week of the function of anti-disease ability.

这样不仅可清除食物残渣、牙面菌斑、牙垢污物，防止牙结石的形成和沉积，而且还能起到按摩牙龈，促进血液循环，增强牙周组织的抗病能力的作用。

Based on the complexity of the sources for the sediments in the Okinawa Trough, the sequential extraction procedure was applied to the hydrothermal influenced sediments in the core H9 recovered from the middle Okinawa Trough. Five fractions, including exchangeable, bound to carbonates, bound to iron and manganese oxides, bound to organic matter, and residual were acquired. Based on detailed analysis for major, minor and rare earth element compositions, the distributions of the elements in various speciations of the sediments were determined and the controlling mechanism was discussed. The variations of hydrothermal signatures in the core, partitioned from the terrigenous, volcanic and biogenic materials, have been demonstrated and the accumulation rates of some elements were evaluated.

本文针对冲绳海槽多种物源沉积作用混杂的特征，采用顺序淋滤萃取方法对海槽中部受热液活动影响的H9岩芯沉积物进行了分离，将沉积物中分为可交换态、碳酸盐结合态、铁锰氧化物结合态、有机结合态和残渣态五个部分，并对各个结合态中常量、微量和稀土元素组成进行了分析，确定了不同元素在不同结合态中分配的比例，分析了控制不同元素进入沉积物的主要机制。

The results showed that the heavy metals in various mediums were mainly Cu and Ni, and those concentrations were, in the descending order, in ditch, tailings, slagheap and cultivated soil. In the tailings and the sludge of the ditch, the concentrations of Ni were obviously higher than those of Cu. Whereas, in the soil and the weathering and atmospheric deposition of the waste slagheap surface, the concentrations of Cu were higher than those of Ni. This means that in the first two mediums, Cu and Ni mainly originated from the tailings, while in the latter two mediums, Cu and Ni mainly came from the atmospheric deposition of airborne particles of the smelting. Cr and Zn were mainly in residual fraction, Cu was mainly in oxidizable and residual fraction.

结果表明：不同区域环境中重金属呈现不同程度累积，其中以Cu、Ni最为显著，含量由高到低依次为尾矿坝排污沟＞尾矿坝＞废渣堆＞农田土壤；尾矿砂和沉积物中重金属分布以Ni含量显著高于Cu含量为特征；而农田土壤和风化物及降尘中重金属分布以Cu含量高于Ni含量为特征，前者Cu、Ni主要来源于尾矿，后者与冶炼烟尘排放有很大关系；样品中除Cr、Zn以残渣态为主外，Cu、Ni、Pb化学形态分布有较大差异，Cu以可氧化态和残渣态为主，Ni以可还原态为主，其次为弱酸提取态，Pb以可还原态为主，其次为残渣态。

The study results of sediments from Guangzhou water body showed that the main crystalline minerals in sediments were quartz, kaolinite and hydromica, and heavy metals were associated mainly with residual phase, organic phase and iron oxides phase.

而且解吸和吸附过程不是完全可逆的；(6)广州城市水体污染沉积物中的结晶矿物相以石英、高岭石和水云母类矿物为主，重金属元素Pb、Zn、Cu、Ni、Cr、Mn主要以残渣态、有机态和氧化铁结合态存在。

A portion of the dust which collects in filter hoppers is not recirculated to the Meros process, but is removed from the system and conveyed to a residual hopper.

沉积在过滤漏斗中的部分粉尘就不会重新循环到Meros系统中，而是从系统中清除运送到残渣漏斗。

The results indicated that the chemical fraction composition characteristics of heavy metals are different. Cu mainly existed in organic/sulphidic fraction and residual fraction; Pb mainly existed in carbonates, Fe-Mn oxides and residual fraction; Cd mainly existed in carbonates and Fe-Mn oxides fraction; Cr mainly existed in residual fraction.

结果表明，不同重金属在消落区沉积物中形态分布各异，Cu主要以有机物及硫化物结合态和残渣态形式存在，Pb主要以碳酸盐结合态、Fe-Mn氧化物结合态及残渣态存在，Cd主要以碳酸盐结合态、Fe-Mn氧化物结合态存在，Cr主要以残渣态存在。

It is also the main factors to control the abundances of noncrystal phase. The typical feature is that the elemental concentrations in this speciation and the percentages of this speciation in samples have significantly variation down the core, especially there is a sharp change at the depth of 80cm.

3铁锰氧化物结合态是除残渣态外的又一元素主要赋存形态，是控制元素在非晶质结合态中赋存的主要因素，同时也是岩芯不同深度沉积物中元素含量和萃取比例变化最大的一个相态。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。