重金属总量

全谱直读ICP-AES法测定纺织品中重金属总量

Direct reading ICP - AES Determination of total heavy metals in textiles

人工湿地系统对Cd和Zn的去除主要来源于基质吸附和植物吸收，其中基质吸附去除的重金属总量要高于植物吸收。

The removal of Cd and Zn was mainly through the substrate adsorption and plant uptake , and the contribution of substrate adsorption in heavy metal removal was higher than that plant uptake .

按照国家《海洋沉积物质量标准》，除Pb外其它重金属总量都有比较严重的污染，污染程度依次为Cd、Zn、Cu、Cr。

According to the standard of Marine Sediment Quality , the heavy metals contamination is serious except for the element of Pb . The order of the seriousness is Cd > Zn > Cu > Cr.

对沿岸土壤剖面重金属总量和形态的分析表明，Pb、Zn、Cd、Cu等均存在不同程度的污染.其中，以Cd污染最为严重，Pb、Zn也达到中度污染至强污染。

It is shown that Pb , Zn , Cd and Cu have contaminated the soil , the Cd contamination was more severe , and the contaminated level of Pb , Zn reached moderately to strongly polluted .

其中，重金属总量是影响重金属形态含量的最主要因素，其次为有机质、PH值和CEC。

Among them , the total amount of heavy metal is probably the most critical factor determining the speciation concentrations of heavy metals , followed by organic matter , PH and CEC . 6 .

在猪粪混合堆肥中，采用不同的通风方式和填充料，分析该过程中重金属总量和DTPA提取的重金属含量变化。

The trend in total contents of heavy metals and the assimilable heavy metals in pig manure composting of using different bulking agents and aeration modes have been analyzed .

不同污泥中5种重金属总量与形态分析

Total amount and speciation analysis on five kinds of heavy metals in different sludge

这可能与这些评价方法的自身特色、适用范围及其局限性有关，例如基于重金属总量的评价方法的缺点是基准值设定的科学性和合理性有时难以保证。

This may be related to the characteristics of evaluation method , the application scope and their limitations .

填埋场内重金属总量及其形态分布对迁移性的影响

Effect of the total amount and speciation of heavy metals on its mobility in municipal solid waste landfill

在水和底泥中，重金属总量次序分别为：Zn>Mn>Cu>Cd和Mn>Cu>Zn>Cd。

The total amount in water and in sediment follows the order of Zn > Mn > Cu > Cd and Mn > Cu > Zn > Cd respectively .

蚯蚓和线虫不仅用以监测环境中土壤重金属总量，而且与土壤因素相结合还可以监测重金属的生态有效性。

Earthworms and nematodes are effective bio-indicators for monitoring not only the total heavy metal concentration in soil , but also the bio-availability of heavy metals in combination with soil factors .

选取典型城市污水厂污泥进行重金属总量及形态分析，确定超标重金属的含量、形态，并选择重金属稳定化方法对污泥中的重金属进行了初步实验。

Typical sludge of municipal sewage treatment is chosen for carrying out total amounts and forms analyses of heavy metals to fix contents and forms of excessive heavy metals , and preliminary experiment of stabilization method to heavy metals is chosen and carried out .

文章在生物富集系数和转运系数的基础上创造性地提出了新的评价系数即生物富集量系数，其内涵为给定生长期内单位面积地上部分植物吸收的重金属总量与土壤含量之比。

The new coefficient namely absorption capacity coefficient is creatively putted forward based on the absorption coefficient and transformation coefficient . The coefficient is the ratio of the total of heavy metal absorbed in the above-ground tissue to the concentration in soil per unit area at given growth period .

重金属离子总量、重金属离子多样性等随着距市中心的距离的增加而降低，重要污染重金属离子Pb、Cu、Ni、Cr含量下降非常明显。

The total heavy metal and heavy metal diversity decreased significantly along the transect from urban to rural area . Pb , Cu , Ni and Cr showed more significant trend in decreasing their concentrations along the transect .

生态纺织品中重金属残留总量的测定

Determination for total amount of heavy metal residues in eco textiles

重金属元素总量分布研究表明污水处理过程中重金属元素沉积到污泥中没有显著的差异。

There was no significant difference in the sedimentation of heavy metals during the wastewater treatment process .

从潜在有效态（可交换态、碳酸盐结合态、铁锰氧化结合态、有机结合态）重金属占总量的比例来看，重金属的活性大小为Cd>Zn>Ni>Cu>Cr>Pb。

From the content rate of potential effective form ( Fe-Mn-Ox , O - , C - and Ex - ) with total heavy metal , heavy metal activity order was Cd > Zn > Ni > Cu > Cr > Pb .

同时肾蕨对各种重金属离子吸收总量也显著提高。

Meanwhile , the content of heavy metals in Nephrolepis cordifolia increased significantly .

太湖、巢湖沉积物中重金属污染的总量特征及其区域性差异

The characteristics and regional differences of heavy metal contents in the sediments of Taihu Lake and Chaohu Lake

通过本课题的形态分析实验后，发现传统的计算方法存在缺陷，真正对人体健康产生直接影响和潜在影响的重金属是小于重金属总量对人体健康影响的。

Through the morphological analysis experiments of this issue , we found there were some defects in the traditional method . Real direct impact on human health and the potential impact of heavy metals were less than the total amount of heavy metals impact on human health effects .

从总体上看，研究区域中镉、铅和锌的污染应该引起重视，在防治重金属污染方面要综合考虑重金属总量和重金属的形态等方面的元素。

Generally speaking , regional cadmium , lead and zinc , the pollution prevention and control should be taken seriously in the heavy metal pollution aspect to comprehensive consideration of the heavy metal amount and heavy metal element of the form , etc.

然而上述重金属的形态分析的结果并不能解释重金属总量的变化情况，甚至存在矛盾，表明重金属在土壤到蔬菜体内的迁移是一个极其复杂的过程。

However , the results of heavy metals ′ forms could not explain the change of heavy metals ′ total content , even had contradiction , so it indicated that translocation of heavy metals in soil and vegetables was an extremely complex process .

当前对烟草重金属的研究主要集中在烟叶和烟气中重金属的总量检测方面，对于烟叶中重金属不同形态分离和检测研究报道极少。

Now most studies focus on the determination of total amount of heavy metals in tobacco leaves and cigarette smoke , few studies about the speciation analysis of heavy metals in tobacco have been reported .

但是现行土壤评价标准未考虑作物吸收重金属元素与土壤性质的相关性，仅依土壤重金属元素总量作为评价土壤质量标准。

However , the present soil quality standards usually do not consider the relationship between heavy metal content and soil properties .

根据测定结果分析公路沿线农田土壤和水稻中重金属污染特征，采用GIS技术和空间插值方法，对丹阳加密路段土壤重金属总量、有效态含量、水稻重金属含量进行空间分布特征分析。

GIS technology and space interpolation method were utilized to carry on the spatial distribution characteristics analysis on available content , total amount of heavy metal .

采用传统的化学沉淀法进行处理，排放于水中的重金属离子含量仍较高，甚至不能达标排放，从而导致进入环境水体中的重金属总量越来越大。

Traditional chemical precipitated method can not meet the emission regulation to treat the ever increasing wastewater .