anoxic sediment meaning in English

缺氧沉积物

Photo of bio - remediation of anoxic sediment being carried out in the sam ka tsuen typhoon shelter in 2004
三家村避风塘于2004年采用生化方法处理缺氧沉积物图片
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，沉积物监测包括分析61种物理及化学参数，其中有粒子大小电化学势有机污染促使沉积物缺氧，而让电化学势呈负数值化学需氧量显示有机污染程度总硫化物无机物，是造成难闻气体硫化氢的主因15种金属及准金属铝砷钡硼镉铬铜铁铅锰汞镍银钒及锌和痕量毒性有机物多环芳烃及多氯联苯分别为16种复合物及18种同质物。