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humic acid 【化學】腐植酸,黑腐酸。

humic coal

An improved method for extraction of soil humic acid was used to isolated dissociative humic acid ( ha - i ) and enwrapped humic acid ( ha - ii ) from paddy soil and pohakee peat . quantified and characterized ha - i and ha - ii with 13c nmr , py - gc - ms , optical and elemental analysis . the results indicate that two humic acids are highly different in structure , and ha - ii is more condensed 采用一種改進的腐殖酸萃取方法從珠江三角洲稻田土壤和pahokee泥炭中分離出了游離腐殖酸( ha - )和包裹腐殖酸( ha - ) ,并采用元素分析、 ~ ( 13 ) cnmr 、 py - gc - ms和有機巖石學方法對ha -和ha -進行了定量和定性研究,結果表明兩種腐殖酸在性質和結構上是有區別的。

Abstract : presents the in - depth investigation of the influence of algae , humic acid and low turbidity on the flow current response characteristics of water in lakes or reservoirs for the successful application of flow current self - controlled coagulant dosage system 文摘:近年來,在國內多家以地表水為水源的水廠的混凝投藥生產實踐中已經較為成功地應用了流動電流自控投藥系統,而對于具有特殊水質特征的湖泊、水庫水的流動電流響應特性尚未進行較為深入的研究,本文將分別就藻類、腐殖酸、低濁對流動電流響應特性進行詳細的探討。

The two components of humus ( fulvic acid and humic acid ) had the same characteristic between photodegradation of triazophos , i . e . under the irradiation of high - voltage mercury lamp , the two components exhibited the obvious photoquenching effect , and under the irradiation of sun light , the two components showed the distinct photosensitizing effect ( 4 )腐殖質的影響:試驗中腐殖質中的兩個主要成分富里酸( fa )和腐殖酸( ha )對三唑磷的光解表現出共同的特性,即在太陽光下,二者均表現出一定的光敏性,而在高壓汞燈照射下,二者均表現出了明顯的光猝滅效應。

Desert and oasis ecosystem are the main ecosystems in arid area . studying the characteristics of decaying process , decaying remainders and soil humic acids can accumulate the first hand data for studying the accumulation and decomposition of soil organic matter , the situation of soil fertility , substance cycling and energy flowing in desert - oasis ecosystem , and has the great significance on desert ecosystem restraint and oasis ecosystem extension 研究荒漠綠洲生態系統中植物殘體在土壤中的腐解過程及腐解物和腐殖物質的特征,可為研究荒漠綠洲生態系統中土壤有機質的累積和分解、土壤肥力狀況和荒漠綠洲生態系統的物質循環和能量流動積累寶貴的第一手資料,對于抑制荒漠生態的惡化,促進綠洲生態的發展具有重要意義。

The authour investigate the dosing conditions and effect of the pac to the huanghe water - source , which includes the following four parts : the selection of the pac ; the confirmation of dosing scheme and effect of the pac ; the research of application of potassium permanganate in combination with pac ; the research of the pac ' s modification and the modified effectiveness . the experiment is mainly carried out on the pilot system in the jieyuan water plan of tianjin . the results of the reseach include the following : l ) the pac from zunhua plant is selected as the better carbon for the source water of tianjin through the experiment ; 2 ) through the pilot experiment we conclude that the pac ' s best adding point is the mixing tank and the better dose is 10mg / l , on which the codmn of filtered water can be decreased to 40 % and the effluent have no problem of odour and color ; 3the adsorbing experiment show that pac mainly adsorb the organic matters which molecular wt . , distribution between 500 and 3000 , and can adsorb organic matters whose molecular wt . , distribution are bigger than 6000 if the dose of it is adequent ; 4 ) pac together with potassium permanganate can remove the organic matter more effectively than each of them alone , and reduce the rising trend of turbidity of the flotation ' s effluent due to adding pac ; 5 ) the thesis made a research on the surface properties and the adsorbing capability of the modified carbon by oxidizer : the modified carbon with 20 % h2o2 can remove more organic pollutants than the untreated one by 12 % when we add a higher dose of coagulant ; 6 ) the modification of reduction and loading metal ions are also sttldied , and drow the following conclusions : the modified carbon with 5 % ammonia can enhance the organic matter ' s removal effectiveness by 10 % to the tianjin source water than the untreated one , and the modified one with loading metal ion remove the organic matters from the tianjin source water better ( 8 % ) than the untreated one due to the strong affinity betwween the humic acid and copper ion 本文的實驗主要是在天津芥園水廠的中試系統上完成的,論文的成果和結論主要包括: 1 )通過靜態實驗選定河北遵化活性炭廠生產的煤質炭為適合天津原水的炭種; 2 )中試實驗確定粉末活性炭的較佳投加點為混合池投加,較佳投加量為10mg l ,此時可使濾后水的cod _ ( mn )降低40 ,且可較好地控制濾后水的嗅味和色度; 3 )初步確定粉末活性炭對原水中有機物的吸附主要集中在分子量在500 - 3000范圍內,投量增大時可吸附部分分子量大于6000的有機物4 )中試實驗表明:粉末活性炭與高錳酸鉀聯用可取得較兩者單獨應用時對有機物更好的去除效果,且對因投加粉末活性炭而造成的氣浮出水濁度升高有一定的改善作用; 5 )研究并初步確定氧化改性對粉末活性炭表面性質和有機物的去除效果的影響:粉末活性炭的氧化改性會使其表面的酸性官能團大量增強,表面極性增加;經20的過氧化氫改性的活性炭在增大混凝劑投加量( fecl _ 3投量為15mg l )時對有機物的總體去除效果較原活性炭提高12 , 1次氯酸鈉改性活性炭對有機物的去除效果較原活性炭提高6 ; 6 )研究并初步確定還原改性、負載金屬離子對原水中有機物的去除效果的影響:經5氨水改性的活性炭可提高天津源水中有機物的去除率達到10 ;負載銅離子后的活性炭可提高對腐殖酸類物質的去除能力,一般可提高8左右。

Using corn straw and soybean straw , the characteristics of the decaying process and the remainders , the difference of soil fertility status and soil humic acids character in different using ways are studied by normal analysis combined with energy analysis , thermal analysis ( dta , tg , dig ) and infrared spectrum analysis ( ftir ) 本文以玉米秸和大豆秸為腐解材料,通過常規分析方法結合能態分析、熱分析( dta 、 tg 、 dtg )和紅外光譜( ftir )分析研究了荒漠綠洲生態系統下殘體的腐解特征以及不同利用方式下土壤養分和土壤腐殖質的變化。

The tested inhibitors are listed as follows : alkali matter including lime , silicon - containing fertilizer and coal ash ; organic matter including plant compost , pig manure and humic acid ( ha ) ; ion inhibitor such as znso4 pot experiment , in which lettuce ( lacruca sativa var . augustana irish ) was chosen as the tested plant , involved 27 treatments , 4 replications each 本研究選用的調控劑有堿性物質石灰、硅肥、粉煤灰,有機物料秸稈堆肥、豬糞、胡敏酸,離子拮抗劑znso _ 4 。按不同類型調控劑的比較、有機物料與石灰的組合效應、石灰不同用量的比較等原則設計試驗。

The results of these work indicated that som in top soils and sediments are highly heterogeneous and conprise a wide range complex organic matter such as humic acid , kerogen , and black carbon , and som have a nice bit of black carbon 綜上所述,表層土壤和沉積物中的有機質是高度非均質的,包括腐殖酸、干酪根和碳黑,并且碳黑具有相當高的含量。碳黑在來源、性質和結構上不同于腐殖酸和干酪根,它是生物體和化石燃料不完全燃燒產生,具有更加穩定的性質和結構。

Humic acid active organic compound fertilizer , according to the principle of balanced fertilization , application of advanced technology , research and development of new fertilizers , consisting of : calcium , magnesium , sulfur , zinc , boron , iron , manganese , silicon and other trace elements 活性有機腐植酸復合肥,根據平衡施肥原理,應用高科技方法,研究、開發的新型肥料,內含:鈣、鎂、硫、鋅、硼、鐵、錳、硅等中微量元素。

Between them humic acid had the stronger effect of inhibition on phosphorus immobilization than citric acid . when humic acid and citric acid were added into soils at 2 . 0 g kg - 1 and 4 . 0 g kg - 1 separately , they could inhibit much of phosphorus from immobilization 腐殖酸對土壤磷的固定抑制作用較強,當腐殖酸濃度為2g ? kg ~ ( - 1 )時,抑制作用最強;檸檬酸對土壤磷的固定作用稍弱,當檸檬酸濃度為4g ? kg ~ ( - 1 )時,抑制作用最強。