| 摘要 |
<p>PCT No. PCT/EP89/00381 Sec. 371 Date Apr. 12, 1991 Sec. 102(e) Date Apr. 12, 1991 PCT Filed Apr. 8, 1989 PCT Pub. No. WO90/01696 PCT Pub. Date Feb. 22, 1990.To analyze the oxidizable substances, for example the chemical oxygen demand (COD), contained in an aqueous sample liquid, for example sewage water, the aqueous sample liquid is diluted with dilution water and fed into a reaction container where it is mixed with ozone from an ozone generating device. After passing through a second reaction container, for example a tubular reactor, the sample liquid reaches an ozonometer appliance. Ozone being added continuously, the ratio of sample liquid to dilution water of the mixture is regulated in such a manner that the residual ozone content measured by the ozonometer appliance remains constant at a predetermined level. The ratio of sample liquid to dilution water of the mixture required to maintain the reading on the ozonometer at the predetermined level is used to determine oxidizable substances contained in the water, in particular COD.</p> |
