anoxic sediment 中文意思是什麼
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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。 -
Photo of bio - remediation of anoxic sediment being carried out in the sam ka tsuen typhoon shelter in 2004
三家村避風塘於2004年採用生化方法處理缺氧沉積物圖片 -
Bio - remediation can be achieved in different ways, but in the case of the shing mun river, it involved injecting calcium nitrate into the sediment, thus converting anoxic pollutants into odourless gases such as nitrogen or carbon dioxide, and in the process removing offensive odours
生化處理可以多種形式進行，以城門河為例，處理程序是將硝酸鈣注入沉積物內，使缺氧的污染物轉化為氮或二氧化碳等無臭氣體，從而消減臭味。 -
Heavy metals and organic contaminants are very persistent in marine sediment. sediments in victoria harbour have an elevated organic content and are highly anoxic with low electrochemical potential due to sewage, as well as being contaminated with heavy metals
海洋沉積物內的重金屬及有機污染物一般均難以降解而維持較久，長期以來污水排放使維多利亞港海床沉積物的有機物含量偏高，因而導致沉積物高度缺氧和電化學勢下降，重金屬污染也較嚴重。
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