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The invention discloses a method for measuring seawater chemical oxygen demand by photometry, wherein the seawater exemplar is first pre-processed, then using the basic potassium hypermanganate as reaction system, the potassium permanganate is deacidized quantitatively by organics to produce manganate, using pure water or margin solution as reference ratio, measuring the absorbance an of the manganate at its maximum absorbing wave length 430 nm, drafting the A-COD value operating curve, obtaining the concentration of the organics in the water, i.e.

本发明公开了一种对海水化学需氧量进行测定的光度测定法,该方法首先将海水样品进行预处理,再以碱性高锰酸钾为反应体系,这样海水中的有机物在强碱性介质中与过量的高锰酸钾迅速反应,高锰酸钾被有机物定量还原后生成锰酸盐,以纯水或空白溶液作参比,在锰酸盐的最大吸收波长430nm处测其吸光度A,该吸光度A与海水样品中的有机物的含量具有正相关关系。

The adopt the analytical method announced by environmental protection administration NIEA A715.12B "volatile organic compounds detection method at air - stainless steel canister/analyze mass spectrograph of gaseous phase ", to effectively analyze the air samples inside the station, to find out the space distribution and concentration of volatile organic compounds at the service station.

研究分析方法采用环保署公告NIEA A715.12B「空气中挥发性有机物检测方法-不袗采样筒/气相层析质谱仪法」,期望有效分析加油站内空气样品,对站内空气中各挥发性有机物物种进行定性与定量分析,以了解站内挥发性有机物空间分布与浓度分布情况,提供国内相关资料库与相关立法规范参考。

Different mechanisms and model of the sorption of organic compounds by soli /sediment in combined polluted environment were reviewed, including many factors which influence the sorption.

本文评述了复合污染中有机物在土壤/沉积物上的吸附机理及影响吸附的主要因素,主要论述了共存物质及环境条件对有机物吸附行为的影响,同时,总结了表面活性剂在土壤/沉积物上的吸附机理和吸附模型,探讨了影响表面活性剂吸附的因素,评述了表面活性剂对有机物在土壤/沉积物上吸附行为的影响及机理。

DOC and HDOC in ridge, rice and rape use pattern in 0~30cm depth layer much more than other treatments after 14 years and showed significant differences;land use of rotation of waterlog rice and dry rape which was disadvantageous to increase the quantity of DOC, which indicated DOC is good evaluation index of soil quality land use effect for paddy soil.

土壤有机质损失的重要途径主要是DOC的淋失,土壤可溶性有机碳是土壤有机碳周转的必要环节,是其中的不稳定组分,主要包括有机残体的可溶性有机物、土壤微生物分解有机残体后未吸收的可溶性有机物及微生物细胞衰老自溶后释放的可溶性有机物[4],在陆地生态系统碳循环中起着重要作用[5],所以DOC的分析

More and more attention is focusing on the safty of drinking water suply. In this paper, firstly, chloramine formation and the characteristics and kinetics of monochloramine autodecomposition were studied. Secondly, considering the high concentration of ammonia and the complication of organic matters in Shanghai Huangpu River, formation characteristics and rules of disinfection byproducts were reviewed during the breakpoint chlorination process, and on the basis of grading and clssification of organisms, the control effects of chloramination on DBPs formation were studied. Finally, the formation rules of 2-monochlorophenol, 2,4-dichlorophenol and 2,4,6-trichlorophenol from phenol chlorination were investigated, and related influencing factors and kinetics were analysed.

饮用水的安全供给受到越来越多的重视,本文首先进行了氯胺形态以及一氯胺自降解特性及其动力学研究;然后结合上海黄浦江水源氨氮浓度高、有机物成分复杂的特点,研究折点加氯过程中消毒副产物的生成特性和规律,以及在将有机物分级和分类的基础上,研究氯胺消毒对不同类别有机物生成消毒副产物的控制效果;最后考察了氯化苯酚生成2-一氯酚(2-MCP)、2,4-二氯酚(2,4-DCP)及2,4,6-三氯酚(2,4,6-TCP)的规律,并进行了影响因素和动力学分析。

The experiments show that one portion of amino organic compounds in the shell is changed to the volatilizable amine and the other portion is transformed to the involatile nitrate after pyrogenation.The organic compounds disappear completely at 600℃.They also show that the aragonite phase of calcium carbonate in pearl shell chang with temperature;the aragonite phase transforms to calcite at 500℃, but some of organic compounds is still residual;and calcium carbonate begins to decompose to calcium oxide at 600℃.

实验发现,贝壳中的氨基酸类有机物热降解后部分以胺的形式挥发出来,另一部分则转化为不可挥发的硝酸盐的形式,600℃有机物完全消失;同时,贝壳碳酸钙的文石晶相随温度而变化,500℃时转变为方解石结构,其中仍有部分有机物残留,600℃开始分解为氧化钙。

According to the characteristic of organic matter is liable to be oxygenated and decomposed,using the oxidability of peroxide synthesized by the BDD anodes used in the electrochemical to oxidative decomposes residue organic matter and coordinates with ultrasonic cleaning,combining with physical and chemical method,thus achieves,the goal of wiping off residue organic matter.

根据有机物易被氧化分解的特性,采用金刚石膜电化学法合成过氧化物,利用过氧化物的氧化性氧化分解硅片化学机械抛光后表面的有机物残留配合特选的表面活性剂,并加超声清洗,物理化学方法结合,从而达到去除有机物污染的目的。

On the PRBs. Experiments results indicated that under the same condition, the treatment effect of contaminants directly correlated with retention time of contaminants in rectors; ZVI take an important role on decomposing the complex non-biodegradable or difficult biodegradable org...

实验结果表明:在相同条件下,污染物的处理效果与滞留时间直接相关;零价铁对复杂的不可生物降解或难生物降解的有机物向简单有机物的转化起了重要作用,经过反应器后使ρ(BOD5)/ρ值从初始0.32增至0.5~0.79,增强了有机物的可生物降解性;不同的辅助反应介质对污染物的去除具有一定的选择性。

The results show that both of the "anaerobic" wastewater treatment and the sludge anaerobic digestion make the organic compounds in sludge so complicated that the organic compounds decomposition and release temperature becomes higher during pyrolyzing, and the "aerobic+anaerobic" process makes the organic compounds in sludge more complicated than the "anaerobic +aerobic" process. There is no influence on the combustion process and the burnout point, but can make the combustion temperature of sludge higher.

结果表明,污水处理工艺的&好氧+厌氧&、&厌氧+好氧&过程以及污泥的厌氧消化均使污泥中的有机物结构复杂,导致污泥热解时有机物的分解和析出温度升高,且&好氧+厌氧&过程使污泥中有机物结构更复杂;而对污泥的燃烧过程和燃尽点无影响,但使着火温度升高。

The compost of agricultural waste materials is the process that under the function of microorganism, the organic matter turn into well-rotted manure by the way of the organic matter being mineralized and humus and harmless.

农业废弃物的堆腐是在微生物作用下,通过发酵使有机物矿质化、腐殖化和无害化而变成腐熟肥料的过程,在微生物分解有机物的过程中,不但生成大量可被植物吸收利用的有效态氮、磷、钾化合物,而且又合成新的高分子有机物---腐殖质。

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Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严,以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆,把帆卷起,系住。

Therefore, positively advances the interest rate marketability reform is one of current our country finance reform important tasks.

因此,积极推进利率市场化改革是当前我国金融改革的重要任务之一。