Identification of a novel PCB source through analysis of 209 PCB congeners by US EPA modified method 1668

Litten, Simon; Fowler, Brian R.; Luszniak, Diane

doi:10.1016/s0045-6535(01)00253-3

Cited by 64 publications

(47 citation statements)

References 3 publications

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“…This can be described by the location of the sampling spot in a regularly flooded basin. Recently, PCB 35 was found in the effluent from a pigment manufacturer and in the surrounding surface waters in New York Harbour (Litten et al, 2002). This could also be a source for the congener in the Kathmandu Valley, as pigments definitively play an important role in Nepal's textile and garment industry.…”

Section: Source Identification Of Pcbsmentioning

confidence: 99%

Polycyclic aromatic hydrocarbons and polychlorinated biphenyls in urban soils from Kathmandu, Nepal

Aichner

Glaser

Zech

2007

Organic Geochemistry

123

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Kathmandu, the capital of Nepal, faces increasing environmental problems such as heavy air pollution and lack of proper waste management. The aim of this study was to examine if the soils are also affected by pollution, with the focus on polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs). The sum of 20 PAHs in surface soils ranged between 184 and 10279 lg kg À1 . The most abundant PAHs were perylene (14.6%), benzo(b+j+k)flouranthene (10.7%), naphthalene (10.7%) and phenanthrene (9.8%), with perylene concentrations varying strongly. The significantly more positive d 13 C values of perylene in samples with elevated concentrations indicate biological production, possibly by anaerobic degradation of perylene quinones. PAH ratios also indicate the influence of petrogenic PAH sources, especially at petrol stations and some street samples. The sum of 12 PCBs ranged from 356 to 44710 ng kg À1 . The most abundant were congeners 52 (19.4%), 101 (14.3%), 118 (13.4%) and 138 (11.7%). The low PCB concentrations and pattern were interpreted as a diffuse background contamination being the main PCB source in the urban soils. Indications for recent contamination were found in river sediments from the inner city, as well as in industrial and street samples. Classified by land use, the samples taken from the gutter contained the highest PAH and PCB concentrations as a result of accumulation. The lowest values were found in surface soils from Swayambunath (a park) and a garden area. A gradual decrease in concentration with depth was present for both compound classes in the profiles sampled at Swayambunath. No trend was visible in the garden profiles as a result of soil disturbance of the soil by agricultural treatment. Enhanced microbial degradation and volatilization in the warm/humid monsoon climate is probably the main cause for low pollutant concentrations. Increased photodegradation and the short accumulation period might be other important factors. Concerning its state of soil pollution, Kathmandu fits rather well into a global distribution pattern of persistent organic pollutants, with high concentrations in temperate (higher latitude) regions and very low ones in the tropics (lower latitude regions) due to global distillation.

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Section: Source Identification Of Pcbsmentioning

confidence: 99%

Polycyclic aromatic hydrocarbons and polychlorinated biphenyls in urban soils from Kathmandu, Nepal

Aichner

Glaser

Zech

2007

Organic Geochemistry

123

View full text Add to dashboard Cite

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“…In recent years, 3,3-dichlorobiphenyl (PCB-11) has gained increasing interest because this congener is normally not found at significant level in common technical PCB mixtures (Frame et al, 1996). Nevertheless, PCB-11 was found at high concentrations in WWTPs in the New York city area (Litten et al, 2002) and even served as a tracer for wastewater effluents (Rodenburg et al, 2011). Rodenburg et al (2010) found that PCB-11 was mainly associated with pigment manufacturing.…”

Section: Introductionmentioning

confidence: 99%

Distribution of polychlorinated biphenyls in an urban riparian zone affected by wastewater treatment plant effluent and the transfer to terrestrial compartment by invertebrates

Yu¹,

Wang²,

Han³

et al. 2013

Science of The Total Environment

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“…When submerged in water, the dissolved-phase PCBs diffuse through the PISCES membrane and accumulate in the hexane at a rate proportional to the concentration in the sampled water, the area of the membrane, and the temperature of the water. PISCES normally are deployed in the water for a period of two weeks (see also Litten et al, 2002).…”

Section: Data Collectionmentioning

confidence: 99%

Lackawanna WWTP Elimination - A study of Potential Impacts on Smokes Creek and the Buffalo Sewer System

Cunderlik

Martin²,

Barnes³

et al. 2013

JWMM

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This study presents the results of numerical modeling performed in support of the evaluation of the feasibility of conveying sanitary wastewater flows handled by the Erie County Sewer District (ECSD) No. 6 Lackawanna wastewater treatment plant (WWTP) to the Buffalo Sewer Authority's (BSA) Bird Island WWTP for treatment.A coupled hydrologic-hydraulic-hydrodynamic-water quality numerical modeling approach was developed to capture and evaluate the range of potential environmental benefits and the impacts of eliminating discharge from the Lackawanna WWTP to Smokes Creek. The results showed that over 95% of the ammonia and TKN (total Kjehdahl nitrogen) loadings would be removed from lower Smokes Creek. Lead and zinc concentrations would be reduced by approximately two-thirds. Eliminating the Lackawanna WWTP discharges would result in only minor reductions in existing Smokes Creek flow velocities and water levels.The potential impacts of redirecting the ECSD No. 6 flows to the BSA were evaluated using the BSA's XPSWMM model of its sewer system. The results showed that the Bird Island WWTP would be well suited to accept sanitary wastewater flows from ECSD No. 6. The Bird Island WWTP excess capacity would only be reduced by about 10% to treat flows from ECSD No. 6, thus maintaining flexibility. Potential additional combined sewer

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Identification of a novel PCB source through analysis of 209 PCB congeners by US EPA modified method 1668

Cited by 64 publications

References 3 publications

Polycyclic aromatic hydrocarbons and polychlorinated biphenyls in urban soils from Kathmandu, Nepal

Polycyclic aromatic hydrocarbons and polychlorinated biphenyls in urban soils from Kathmandu, Nepal

Distribution of polychlorinated biphenyls in an urban riparian zone affected by wastewater treatment plant effluent and the transfer to terrestrial compartment by invertebrates

Lackawanna WWTP Elimination - A study of Potential Impacts on Smokes Creek and the Buffalo Sewer System

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