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A Method for Estimating the Quenching Effect of Pyrene Photolysis by Dissolved Organic Compounds in Ice Phase

A technology of dissolved organic matter and organic matter, applied in the field of photodegradation, can solve the problem of increased photolysis rate of pyrene

Active Publication Date: 2022-01-14
LIAONING UNIVERSITY
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Problems solved by technology

If the promotion effect is greater than the inhibition effect, the apparent effect of DOM on pyrene photolysis observed in the photodegradation experiment is that the pyrene photolysis rate increases; if the inhibition effect is greater than the promotion effect, the apparent effect is that the pyrene photolysis rate decreases, but the photolysis The apparent reduction of the decomposition rate is less than the actual inhibition, because there is also an increase in the photolysis rate of pyrene due to the promotion of DOM

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  • A Method for Estimating the Quenching Effect of Pyrene Photolysis by Dissolved Organic Compounds in Ice Phase
  • A Method for Estimating the Quenching Effect of Pyrene Photolysis by Dissolved Organic Compounds in Ice Phase
  • A Method for Estimating the Quenching Effect of Pyrene Photolysis by Dissolved Organic Compounds in Ice Phase

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Embodiment 1

[0044] The 39 DOM samples are from 15 surface water samples, 5 sewage water samples, 14 soil samples, and 5 commercial humic acid samples, numbered as follows: No. 1: Harbin Songhua River Water, No. 2: Yichun Tangwang River water, No. 3 Changchun Wukai River, No. 4: Fushun Dahuofang Reservoir Water, No. 5: Shenyang Hunhe River, No. 6: Shenyang Xinkai River Water, No. 7: Shenyang Fine River Water, No. 8: Changtu Liao River Water, No. 9: Benxi Taizi River Water, No. 10: Beijing Miyun Reservoir Water, No. 11: Tianjin Luan River Water, No. 12: Zhengzhou Yellow River Water, No. 13: Luoyang Luohe Water, No. 14: Luoyang Jianhe Water, No. 15: Guangzhou Pearl River Water; No. 16: Water outflow from the secondary settling tank of Shenyang northern sewage treatment plant, No. 17: effluent from the biological aerated filter of Shenyang Fairy River sewage treatment plant, No. 18: effluent from the secondary settling tank of Shenyang Shenshuiwan sewage treatment plant, No. 19: secondary sett...

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Abstract

A method for estimating the photolysis quenching effect of dissolved organic matter on pyrene in ice phase, specifically: 1) selection and extraction of DOM; 2) measurement of DOM by ultraviolet absorption spectrum; 3) direct photolysis of pyrene in ice phase 4) Carry out the direct photolysis photolysis experiment when pyrene and DOM coexist in the ice phase; 5) Calculation of the quenching effect of DOM on the photolysis of pyrene; 250‑280 Quenching factor Q λ correlation between. Through the above steps, the present invention provides a method for estimating the quenching effect of pyrene photolysis by dissolved organic matter in the ice phase with accurate estimation, rapid response and simple operation.

Description

technical field [0001] The invention belongs to the field of photodegradation, and in particular relates to the estimation of the photolysis quenching effect of dissolved organic matter (DOM) in ice phase on pyrene. Background technique [0002] Every November in the northern part of my country, the water surface of the surface water body starts to freeze, and an ice cover is formed on the water surface in late November, entering the ice-covered period. As the river freezes, some pollutants in the water body are frozen in the ice. Due to the special properties of ice, compared with the fluid atmosphere and water body, the physical migration process, conventional chemical reaction and microbial action of pollutants in the ice phase are relatively weak, while the photochemical action shows special importance. Photochemical action is an important way for the migration and transformation of pollutants in the environment. [0003] Pyrene is a typical representative of polycycli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/33G01N30/02
CPCG01N21/33G01N30/02
Inventor 薛爽张翼鹏孙吉俊刘强
Owner LIAONING UNIVERSITY