Polycyclic Aromatic Hydrocarbons in Agricultural Soils of the Southern Subtropics, China

Rong, Hao; Wan, Hongfu; Song, Yu‐Li; Jiang, Hong; Shaolin, Peng

doi:10.1016/s1002-0160(07)60081-2

Cited by 56 publications

(16 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The scanning slope of the full scan mode ranged from 100 to 400 amu. all measurements were conducted in triplicate, and the average values were reported [13].…”

Section: Gc/ms Conditionsmentioning

confidence: 99%

Phytoremediation of PAHs-contaminated Sludge in a Constructed Wetland

Cui¹,

Wang²,

Chen³

2017

JRST

View full text Add to dashboard Cite

Wastewater sludge from metropolitan areas has become a source of polycyclic aromatic hydrocarbons (PAHs), and may result in pollution of soils and plants if applied to agricultural areas. It is important to stabilize wastewater sludge before its application to agricultural land. Constructed wetlands (CWs) have been widely applied for stabilization of sludge. In CWs, plants, especially reeds, promote degradation of pollutants in the rhizosphere and are the principal mechanisms for PAH-contaminated sludge phytoremediation. We studied PAH removal in sludge planted with Phragmites australis (common reeds) in onsite experiments over a 3-year period comprising 2 years of sludge application and 1 year of resting. The average PAH content in the feeder sludge was 5.7 mg kg -1 (DW), consisting of approximately 48% low-molecular-weight (2-3 ring) PAHs, 27% middle-molecular-weight (4 ring) PAHs and 25% high-molecular-weight (5-6 ring) PAHs. After 3 years, the average PAH content in stabilized sludge was 2.1 mg kg -1 (DW), which was lower than that of the feeder sludge. Overall, about 66% of low-molecular-weight PAHs (dominant type), 57% of middle-molecular-weight PAHs and 32% of high-molecular-weight PAHs were removed from the stabilized sludge. Additionally, there were spatial variations in PAHs in stabilized sludge, with PAHs being highest in the surface layer (12-14 cm) sludge, lower in the middle layer (6-8 cm) and lowest in the bottom layer (0-2 cm).

show abstract

“…The scanning slope of the full scan mode ranged from 100 to 400 amu. all measurements were conducted in triplicate, and the average values were reported [13].…”

Section: Gc/ms Conditionsmentioning

confidence: 99%

Phytoremediation of PAHs-contaminated Sludge in a Constructed Wetland

Cui¹,

Wang²,

Chen³

2017

JRST

View full text Add to dashboard Cite

show abstract

“…The United States Environmental Protection Agency (USEPA) listed 16 PAHs as priority pollutants because of their frequent occurrences, environmental toxicities, and potential human exposures in urban settings (Hao et al, 2007). Natural processes including volcanic eruptions, forest fires and biosynthesis have emitted PAHs (Gocht et al, 2007;Ravindra et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Mass balance-based regression modeling of PAHs accumulation in urban soils, role of urban development

Peng

Wang

Chen

et al. 2015

Environmental Pollution

View full text Add to dashboard Cite

a b s t r a c tWe investigated the polycyclic aromatic hydrocarbons (PAHs) contents in 68 soils samples collected at housing developments that represent different length of development periods across Beijing. Based on the data, we derived a mass balanced mathematical model to simulate the dynamics of PAH accumulations in urban soils as affected by the urban developments. The key parameters were estimated by fitting the modified mass balance model to the data of PAH concentrations vs. building age of the sampling green area. The total PAH concentrations would increase from the baseline of 267 ng g À1 to 3631 ng g À1 during the period of 1978e2048. It showed that the dynamic changes in the rates of accumulations of light and heavy PAH species were related to the shifting of sources of fuels, combustion efficiencies, and amounts of energy consumed during the course of development.

show abstract

“…Other sources of pollution include industrial wastewater and urban surface runoff. Sixteen polycyclic aromatic hydrocarbons are selected which are recognized as priority pollutants by the US Environmental Protection Agency (USEPA) and as representative of the group of these compounds (Hung et al 2011;Gonul and Kucuksezgin 2012;Qiao et al 2006;Magi et al 2002;Hao et al 2007;Yan et al 2004). PAHs disperse into the environment by atmospheric transport or by waterways (Chen et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Monitoring of polycyclic aromatic hydrocarbons on agricultural lands surrounding Tehran oil refinery

Bayat

Hashemi

Khoshbakht

et al. 2015

Environ Monit Assess

View full text Add to dashboard Cite

Soil samples at two depths were collected and analyzed to determine the concentrations of 16 polycyclic aromatic hydrocarbons (PAHs), organic carbon, and soil pH. The Σ16PAHs were 0.13 to 3.92 mg kg(-1) at depth 1 and 0.21 to 50.32 mg kg(-1)at depth 2. The averages of the PAH compounds indicate that the area is contaminated with oil, and this pollution was greater at depth 2. Interpolation maps showed that the southern region, especially at depth 2, has been contaminated more by anthropogenic activity. The diagnostic ratios indicate several sources of pollution of the agricultural soil. A comparison of average PAHs and standard values revealed that higher molecular weight compounds in the topsoil (InP and BghiP) and subsoil (BaA, BkF, BaP, DBA, and BghiP) exceed standard values for farmland. The pH interpolation map for both depths showed that most of the area has alkaline soil from long-term irrigation with untreated urban wastewater.

show abstract

Polycyclic Aromatic Hydrocarbons in Agricultural Soils of the Southern Subtropics, China

Cited by 56 publications

References 35 publications

Phytoremediation of PAHs-contaminated Sludge in a Constructed Wetland

Phytoremediation of PAHs-contaminated Sludge in a Constructed Wetland

Mass balance-based regression modeling of PAHs accumulation in urban soils, role of urban development

Monitoring of polycyclic aromatic hydrocarbons on agricultural lands surrounding Tehran oil refinery

Contact Info

Product

Resources

About