Modification on the conventional procedure to measure AOC in drinking water

Abstract： Additional phosphorus will be introduced to water sample if the conventional procedure is used to measure assimilable organic carbon(AOC) in drinking water. It has been shown that there are the cases that phosphorus is the limiting nutrient for microbial growth in drinking water. The measured value of AOC would not be able to indicate appropriately the regrowth potential of bacteria in this case. The conventional procedure used to measure AOC was modified to avoid the introduction of additional phosphorus to water sample in this study. It was shown that it was feasible to measure AOC in water using the modified procedure. Furthermore, the measured value of AOC determined by the modified procedure could indicate appropriately the regrowth potential of bacteria in drinking water despite either organics or phosphorus was the limiting nutrient for bacterial regrowth. 作 者： LI Fu-zhi    SANG Jun-qiang    Zhang Xi-hui    WANG Zhan-sheng   作者單位： LI Fu-zhi,SANG Jun-qiang,Zhang Xi-hui(Research Center for Environmental Engineering & Management, Shenzhen Graduate School, Tsinghua University, Shenzhen 518055, China)

WANG Zhan-sheng(Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China) 

期 刊： 環(huán)境科學(xué)學(xué)報（英文版）  ISTICSCI   Journal： JOURNAL OF ENVIRONMENTAL SCIENCES  年，卷(期)： 2004, 16(6)  分類號： X830.2 R123.6  Keywords： drinking water    assimilable organic carbon    bacterial regrowth    phosphorus    organics