Organic Pollutant Monitor OPSA-150

*Manager of Team 2 in Design Department, HORIBA Advanced Techno, Co.,Ltd.

The most important matter among water pollution indicators is organic pollutant. In Japan, since the fi rst water quality total pollutant load control regulation was issued in 1979, organic pollutants have been continuously monitored, which has resulted in some improvement of water quality. On the other hand, Asian countries, especially China, rapid industrial growth has been accompanied by corresponding increases in water pollution. Thus, introduction of water quality regulations similar to the Japanese regulations are required. This article introduces the technology for measuring water pollutant levels and the OPSA-150, organic pollutant monitor manufactured by HORIBA. OPSA-150 is an ultraviolet absorptiometer (UV meter), which is a new version of the OPSA-120, common in the Japanese market for more than 20 years. While following the well-tried rotary cell length modulation method, wiper cleaning method, and turbidity compensating function by means of visible radiation, OPSA-150 also excels in measurement of both low and high concentrations. It can be used in diverse fi elds including extremely contaminated water discharge sites.

(Same content in Japanese is in Readout No.31-Japanese edition-.)

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