PCDD/Fs characteristics in flue gas and surrounding environment of iron and steel smelting industry.

Environmental Science and Pollution Research International
Mingxiu ZhanJian-hua Yan

Abstract

Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) concentrations and distributions, emission factors and amounts, and ambient air and soil potential sources were investigated by collecting flue gas, ambient air, and soil samples from ten sintering furnaces and two electric arc furnaces of eight iron and steel smelting industries (ISSI) in China. In flue gas, the concentrations of PCDD/Fs ranged from 0.05 to 2.93 ng I-TEQ Nm-3 (mass, from 0.38 to 30.67 ng Nm-3), with an average of 0.42 ng I-TEQ Nm-3 (mass, 4.99 ng Nm-3), respectively. In ambient air, the concentrations ranged from 0.05 to 0.35 pg I-TEQ m-3 (mass, from 0.66 to 5.66 pg m-3), with an average of 0.20 pg I-TEQ m-3 (mass, 2.96 pg m-3), respectively. In surface soil, the concentrations ranged from 1.80 to 21.02 ng I-TEQ kg-1 (mass, from 34.29 to 836.00 ng kg-1), with an average of 5.82 ng I-TEQ kg-1 (mass, 252.10 ng kg-1), respectively. In deep soil, the concentrations ranged from 1.17 to 12.00 ng I-TEQ kg-1 (mass, from 56.83 to 1488.00 ng kg-1), with an average of 7.76 ng I-TEQ kg-1 (mass, 433.20 ng kg-1), respectively. Compared with emission limits for PCDD/Fs, the compliance was 78.9% in flue gas, 100% in ambient air, and 77.3% in soil. In congener profi...Continue Reading

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Dec 7, 2013·Environmental Science and Pollution Research International·Tong ChenJianhua Yan
Aug 16, 2014·Environmental Science and Pollution Research International·Tong ChenXiao-Dong Li

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