查询词典 dissolved organic matter

It exhibited a sudden change as the concentration of organic acid over a specific value. This change can be contributed as the effect of the existence of a clathrate structure of organic acid in the water-rich region. dissolved organic matter,naphthalene,solubility,transfer

本文通过热力学的方法，研究了水溶性有机酸对萘溶解度及迁移性能的影响，探讨了影响萘在不同介质中迁移变化的内在原因，为认识水溶性有机物在土壤、底泥等复

The mechanism of modified Catalysts treating leachate through microwave catalytic oxidation showed that, for those rich in granular organic matters, microwave catalytic oxidation attains good pretreatment effect, while for those rich in dissolved organic matter, the effluent attained the municipal wastewater effluent standardsⅢafter treated; Molecular weigh cutting experiments showed that the removal efficiency of organic matter changes disproportionally with different molecular weight.

单目标物质催化剂的机理分析表明，以空气为氧化剂时，Ni-O/CeO_2催化剂的催化效能高于以Fe-O/CeO_2催化剂的催化效能；以H_2O_2为氧化剂以Fe-O/CeO_2催化剂的催化效能高于Ni-O/CeO_2催化剂的催化效能；微波催化氧化反应与常温常压催化氧化反应和水浴催化氧化反应相比大大缩短了反应时间、提高了反应效率。

Compared to routine inoculation method, total organic carbon, dissolved organic matter of TSCT decrease by 6.37%, 6.57%; and humic substance, humic acid, and humification index of TSCT increase by 8.61%, 16.75%, 18.40% at 336 hours of composting, respectively.

结果表明，在堆肥336 h，与普通接种法比较，三阶段温度控制接种法堆肥总有机碳、水溶性有机碳含量依次降低6.37%、6.57%；而腐殖质、胡敏酸、腐殖化指数分别增加了8.61%、16.75%、18.40%。

We tested the following items every two hours before and after those nitrobacteria worked,respectively,i.e.,ammonium,nitrite,nitrate and the δ13C values of dissolved organic matter.

有机质矿化分解过程中，碳同位素经过化学反应、蒸发、扩散和生物化学等过程发生同位素分馏，δ13C值发生相应的变化[4，13]。

Influence of Dissolved Organic Matter on the Eco-toxicity of Phenanthrene in a Soil.

水溶性有机物对土壤中菲的生态毒性的影响。

In this study,artificial addition of phenanthrene to a soil sample with subsequent aging for 1 month was used to study the influence of dissolved organic matter on the desorption kinetics of PHE.

采用人工添加方法制备加菲老化1个月的土壤，考察水-土体系中溶解有机质对PHE解吸动力学的影响和相互关系。

Three-dimensional excitation emission matrix fluorescence(3DEEM) was used to investigate the characteristic fluorescence of dissolved organic matter s,such as humus,proteinoid,surfactant and vegetable tallow in the wastewater treatment process.

采用三维荧光光谱法研究了城市污水处理过程中溶解性有机物的三维荧光特性变化规律。

The increase of fluorescence index and protein-like fluorescence signal suggested that bacteria could play an important role in the production of chromophoric dissolved organic matter.

荧光指数的增大与类蛋白荧光的产生，显示微生物在有色溶解有机质的生产上起着重要的作用。

Emission spectra,spatial distribution of fluorescence,relations between chromophoric dissolved organic matter fluorescence and absorption coefficient, dissolved organic carbon concentration were studied based on the measurements from December 2004 to March 2005 in Lake Taihu.

利用紫外分光光度法和荧光法测定了2004年12月到2005年3月太湖不同湖区有色可溶性有机物的吸收和荧光，分析了CDOM荧光发光光谱、空间分布及其与吸收系数、溶解性有机碳浓度之间的关系。

The results showed that: three major peaks,humuslike fluorescence peak A,proteinlike fluorescence peaks B and C appeared on the threedimensional fluorescence spectroscopy;the DOM fluorescence intensity was well related with DOC and CODMn,indicating that fluorescence dissolved organic matter content can reflect both the organic carbon content and the organic matter content by oxidation in the water in August,during the nonalgae bloom outbreak period,fluorescence intensity had a poor correlation with chlorophyll a,indicating that phytoplankton was not the main source of the fluorescent substances.

结果显示：小江回水区DOM的三维荧光光谱主要表现出3个峰，类腐殖质荧光峰A、类蛋白荧光峰B和C；DOM荧光强度与DOC、CODMn相关性较好，表明荧光溶解有机物质的含量可以较好反映水体中有机碳和可被氧化有机物的含量；在8月份非水华暴发时期荧光强度和叶绿素a相关性较差，表明DOM荧光物质主要不是由浮游植物产生。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。