cadmium pollution 中文意思是什麼
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Using cd, cu, zn and cr as experimental toxicants and crucian as experimental creature, we employed the environmental biotechniques ( flame atomic absorption spectrophotometry, the method of improved pyrogallol autoxidation and electron microscopy ) to study the acute toxicity and secure concentrations of heavy metals to crucian ; the accumulation and distribution of mixed heavy metals to fingling crucian ; the activities of superoxide dismutase ( sod ) of gill and liver tissues and the hispathological and ultrastructural change of superfine structure of liver and kidney of crucian after cadmium exposure. through which, we intended to fully and systemically study the toxic influence of heavy metals to fish, and preliminarily discuss the influence of heavy metals pollution to the diversified level of fish such as individual, organ, tissue, cell and molecule. thus we tried to provide scientific evidence to establish preventative management measures, avoid and relieve the harm of heavy metals pollution to aquicolous ecosystem in time
隨后以這幾種重金屬作為實驗毒物，以鯽魚為實驗動物，應用環境生物技術、火焰原子吸收分光光度法、鄰苯三酚自氧化法、透射電鏡等技術研究了重金屬cu 、 zn 、 cd和cr對鯽魚的急性毒性及其安全濃度評價、混合重金屬在鯽魚幼體組織內的積累和分佈、 cd對鯽魚鰓和肝臟中sod活性的影響、 cd對鯽魚肝細胞和腎細胞超微結構的影響等，全面和系統地研究了水環境中重金屬暴露對魚類的毒性影響，初步探討了重金屬污染對魚類的個體? ?器官? ?組織? ?細胞? ?分子等各水平層次的影響，為制定漁業生產上預防性的管理措施提供科學依據，及時避免或減輕重金屬污染對水生生態系統造成的損害。 -
Some soil microbial activity parameters and heavy metals contents were analyzed by principal component method. the results showed that the critical levels of cadmium and lead in red clayed soil and red sandy soil were 15 mg. kg - 1 and 0 - 15. mg. kg - 1, 200 mg. kg - 1and 200 - 400 mg. kg - 1, respectively. soil microbial populations and functional diversities of microbial community have changed to some extent under the stress of cadmium and lead pollution
在本文中我們將供試紅壤的上述微生物活性指標和2種重金屬含量進行主成分因子分析，其結果得出，紅黃泥和紅砂泥的土壤微生物活性鎘脅迫的臨界承載量分別為15mg ? kg ~ 1和0 15 ? mg ? kg ~ 1 ；鉛脅迫的臨界承載量分別為200mg ? kg ~ （ - 1 ）和200 400mg ? kg ~ （ - 1 ） 。 -
The related reports said the main pollution sources of serious environmental cd, pb and as pollution in china were mining and smelting of nonferrous metals, these pollutants were discharged into the environment and caused the pollution of water, atmosphere, soil and biological species and caused a series of acute and chronic diseases in the exposed people, but the relationship between malignant tumors and environmental cadmium, lead, arsenic pollution is not well understood up to now
研究認為有色金屬鎘、鉛、砷對人體有毒害作用；有色金屬礦山的開采和冶煉是環境鎘、鉛、砷污染的主要來源；污染物進入環境后，產生水污染、大氣污染、土壤污染和生物污染，繼而危害暴露人群的身體健康，產生一系列急性和慢性病癥。 -
In 2005, 61 physical and chemical parameters were measured and analysed in sediments. these included particle size, electrochemical potential as highly anoxic sediment with negative potential is related to organic pollution, chemical oxygen demand which indicates organic pollutants, total sulphide inorganic constituents, source of the unpleasant - smelling gas hydrogen sulphide, 15 metals and metalloids aluminium, arsenic, barium, boron, cadmium, chromium, copper, iron, lead, manganese, mercury, nickel, silver, vanadium and zinc, and trace toxic organics pahs and pcbs - 16 compounds and 18 congeners respectively
2005年，沉積物監測包括分析61種物理及化學參數，其中有粒子大小電化學勢有機污染促使沉積物缺氧，而讓電化學勢呈負數值化學需氧量顯示有機污染程度總硫化物無機物，是造成難聞氣體硫化氫的主因15種金屬及準金屬鋁砷鋇硼鎘鉻銅鐵鉛錳汞鎳銀釩及鋅和痕量毒性有機物多環芳烴及多氯聯苯分別為16種復合物及18種同質物。 -
Review of effect on human health for environmental cadmium pollution
環境鎘污染人群健康影響研究回顧 -
Discriminant standard for health hazard area caused by environmental cadmium pollution
環境鎘污染健康危害區判定標準 -
Environmental cadmium pollution is of increasing concern. microorganisms are deemed to have great potential in treating cadmium pollution
微生物在治理鎘污染中有著很大的應用前景，尤其是微生物吸附劑的研究成為目前研究的熱點。 -
The study of cadmium concentration mechanisms under supergene weathering action can offer countermeasures in preventing cadmium pollution from the mining of phosphate rock
研究福元素在表生風化作用下的活化遷移沉澱富集機理可以為防治磷礦山開采中可能產生的鎘污染提供對策。 -
The harm and control of cadmium ( cd ) pollution have always been one of the focuses environmental scientists concerned, for cd is a typical pollutant drastically dangerous to environment
鎘是一種環境危害較大的典型重金屬污染物。其污染危害與控制長期以來一直是環境科學關注的熱點問題之一。 -
Based on the principle of sedimentology and the environmental behavior characteristics of heavy metals, the index of geoaccumulation igeo is used to evaluate heavy metal pollution in sediments in the benxi section of the taizi river. the results show that heavy metal pollution in the sediments are serious. the main heavy metal pollutions are copper, lead, zinc, cadmium and mercury
論述了查爾酮合酶基因chs在植物防禦反應中與病原物的相互關系，探討了與查爾酮合酶因誘導表達相關的順式作用元件和反式作用因子及其dna -蛋白質間的相互作用，闡明其在植物抗病性防禦反應中的重要作用。 -
The studies on environmental cadmium ( cd ), lead ( pb ), arsenic ( as ) pollution and health impact on exposure population in china were reviewed in the present paper
摘要該文對我國環境有色金屬鎘、鉛、砷污染及其對暴露人群健康影響的流行病學研究進展進行了綜述。 -
Industrial pollution has been a problem in certain areas of hong kong, and 12 parameters relating to metals and metalloids were initially used in 1986 to measure the degree of such pollution. these parameters are aluminium, arsenic, boron, cadmium, chromium, copper, iron, mercury, manganese, nickel, lead, and zinc. in 1997, another seven were added antimony, barium, beryllium, molybdenum, silver, thallium, and vanadium, making a total of 19
香港部分地區多年來一直受工業污染的困擾， 1986年河溪水質監測計劃推行初期我們用12項金屬及準金屬參數來檢驗工業污染水平：鋁砷硼鎘鉻銅鐵汞錳鎳鉛及鋅其後在1997年起另添加了七項新參數：銻鋇鈹鉬銀鉈及釩，監測的參數共19項，此外並測試了四項與工商業污染有密切關系的參數，即氰化物總量氟油脂及洗滌劑。 -
In this paper, soil microbial ecological characteristics and their influence mechanism in red soils contaminated with heavy metals were studied using the incubation experiment, and field investigations. some sensitive microbial ecological indexes and kinetic parameters were brought forward under the single pollution of cadmium or lead, and cadmium - lead - copper - zinc compound pollution ways, respectively, which will be useful reference for bioremediation, environmental quality evaluation and building up alert index systems in red soils polluted by heavy metals
本項目選擇紅壤作為研究材料，採用室內培養、野外調查以及相關數學分析相結合的研究方法，探討了重金屬污染紅壤的微生物生態特徵及其影響機制，提出了鎘、鉛單一污染和鎘、鉛、銅、鋅復合污染下紅壤微生物學敏感性生態參數及其動力學變化特徵，為重金屬污染土壤的修復、環境質量評價以及建立有效的土壤重金屬污染預警指標體系提供有益的參考。 -
Such as mercury, lead, chromium, and cadmium, etc., which mainly result from industrial and mining pollution. taiwan has a total of 14 heavy metal parameters for water quality, the maximum contaminant level of which vary by parameter
如汞鉛鉻鎘等，主要來自工礦污染我國飲用水水質標準有關重金屬的項目有14項，其限值依項目而定。 -
In our country, water crisis is increasingly serious and the pollution eara of soil heavy metal cadmium expands continuously. under this situation, my dissertation studys alfalfa which has good economic value and strong drought and cold resistance. in the study, resistance experiments of heavy metal - cadmium arid znic are carried out
本論文是在我國水資源危機日趨嚴重，土壤重金屬鎘污染面積不斷擴大的情況下，針對抗旱、抗寒能力強，生物量大、經濟實用價值高的紫花苜蓿，進行的重金屬鎘、鋅的抗性試驗研究。
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