Dong Bing-zhi, Zhang Jia-li, He Chang
Huan Jing Ke Xue. 2016 May 15;37(5):1837-44.
The influences of ozone dosage, pH and ionic strength on the formation of Assimilable Organic Carbon (AOC) during ozonation were investigated. The result demonstrated that within the range of 1-5 mg · L⁻¹ O₃, the formation of AOC increased with increasing ozone dosage, but higher ozone dosage (9 mg · L⁻¹) resulted in reduction of AOC formation. AOC formation increased with higher pH but decreased with increasing ionic strength. The result also showed that AOC formation with hydrophobic fraction (HPO) was the most, followed by transphilic fraction (TPI), and charged hydrophilic fraction (CHPI), while neutral hydrophilic fraction (NHPI) was the least. It was found that AOC formation related closely with SUVA of small molecular weight organics, and the lower SUVA produced more AOC.
研究了臭氧剂量、pH值和离子强度对臭氧化过程中可生物同化有机碳（AOC）形成的影响。结果表明，在1-5 mg·L⁻¹ O₃范围内，AOC的形成随臭氧剂量的增加而增加，但较高的臭氧剂量（9 mg·L⁻¹）导致AOC形成减少。AOC的形成随pH值升高而增加，但随离子强度增加而降低。结果还表明，疏水性组分（HPO）形成的AOC最多，其次是两亲性组分（TPI）和带电荷亲水性组分（CHPI），而中性亲水性组分（NHPI）最少。发现AOC的形成与小分子有机物的比紫外吸光度（SUVA）密切相关，SUVA越低产生的AOC越多。
