Insights into the removal efficiencies of aged polycyclic aromatic hydrocarbons in humic acids of different soil aggregate fractions by various oxidants

2020 ◽  
Vol 264 ◽  
pp. 114678 ◽  
Author(s):  
Wenbing Tan ◽  
Niankai Liu ◽  
Qiuling Dang ◽  
Dongyu Cui ◽  
Beidou Xi ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Humic Acids ◽  
Aromatic Hydrocarbons ◽  
Soil Aggregate ◽  
Polycyclic Aromatic ◽  
Aggregate Fractions ◽  
Removal Efficiencies ◽  
Soil Aggregate Fractions

Binding of natural humic matter to polycyclic aromatic hydrocarbons in rivers of the Southeastern United States

1994 ◽  
Vol 30 (10) ◽  
pp. 199-205 ◽  
Author(s):  
James J. Alberts ◽  
Cheryl Griffin ◽  
Katherine Gwynne ◽  
Gordon J. Leversee
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Humic Acids ◽  
Aromatic Hydrocarbons ◽  
Southeastern United States ◽  
Binding Constants ◽  
Molecular Size ◽  
Fulvic Acids ◽  
Humic Matter ◽  
Polycyclic Aromatic ◽  
Molecular Size Distribution

The binding constants (Koc) of four polycyclic aromatic hydrocarbons (PAH) were determined for sedimentary fulvic and humic acids and the dissolved organic carbon (DOC) of five rivers in Georgia, USA. The log Koc for the PAH ranged: anthracene, 4.63-5.57; phenanthrene, 4.58-5.62; pyrene, 4.90-5.65; benzo(a)pyrene, 3.48-5.20. Log Koc values for the PAH compounds with riverine DOC were very similar for all rivers and more closely resembled those of sedimentary humic acids than the fulvic acids. The molecular size distribution of the riverine DOC indicates that >75% of the DOC occurs in size fractions >10,000 daltons. Despite similarities in Koc, there appear to be inter-river differences in the distribution of PAH among molecular size classes of the DOC, which have ramifications for water quality both in rivers and estuaries.

Binding of polycyclic aromatic hydrocarbons by humic acids formed during composting

2009 ◽  
Vol 157 (1) ◽  
pp. 257-263 ◽  
Author(s):  
César Plaza ◽  
Baoshan Xing ◽  
José M. Fernández ◽  
Nicola Senesi ◽  
Alfredo Polo
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Humic Acids ◽  
Aromatic Hydrocarbons ◽  
Polycyclic Aromatic

Humic acids-based one-step fabrication of SERS substrates for detection of polycyclic aromatic hydrocarbons

The Analyst ◽  
2013 ◽  
Vol 138 (5) ◽  
pp. 1523 ◽  
Author(s):  
Lu-Lu Qu ◽  
Yuan-Ting Li ◽  
Da-Wei Li ◽  
Jin-Qun Xue ◽  
John S. Fossey ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Humic Acids ◽  
Aromatic Hydrocarbons ◽  
Sers Substrates ◽  
Polycyclic Aromatic ◽  
One Step

Occurrence and removal efficiency of six polycyclic aromatic hydrocarbons in different wastewater treatment plants

2013 ◽  
Vol 68 (8) ◽  
pp. 1844-1851 ◽  
Author(s):  
Manli Wu ◽  
Lili Wang ◽  
Huining Xu ◽  
Yi Ding
Keyword(s):  
Wastewater Treatment ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Removal Efficiency ◽  
Aromatic Hydrocarbons ◽  
Biological Treatment ◽  
Wastewater Treatment Plants ◽  
Ultra Performance Liquid Chromatography ◽  
Wastewater Treatment Process ◽  
Polycyclic Aromatic ◽  
Removal Efficiencies

Occurrence and removal efficiency of six polycyclic aromatic hydrocarbons (PAHs) (fluoranthene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, benzo[ghi]perylene and indeno[1,2,3-cd]pyrene) in wastewater were monitored at different treatment processes in three wastewater treatment plants (WWTPs) by using ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). Chromatographic separation was performed on a Waters Acquity UPLC BEHC18 column (1.7 μm, 2.1 mm × 50 mm). A 0.2 μm precolumn filter was used to protect the analytical column. The result indicated that (1) the total concentrations of six PAHs were 427, 318, and 220 ng L–1 in the influent of three wastewater treatment plants, respectively. Among six PAHs, the content of fluoranthene was the highest, accounting for 62–66% of total PAHs. (2) Throughout the wastewater treatment process, different treatment units exhibited different removal efficiencies for six PAHs. Biological treatment stage and aerated grit chamber appeared to be necessary for effective removal of six PAHs. The removal efficiencies of six PAHs were 73–83% at biological treatment units, and 24–56% at the aerated grit stage, respectively. The final sedimentation and disinfection for PAH removal was minor.

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