Effect of photosensitizer diethylamine on the photodegradation of polychlorinated biphenyls

Lin, Yaw-Jian; Teng, Li-Shan; Lee, Ampere; Chen, Yi‐Ling

doi:10.1016/j.chemosphere.2003.11.059

Cited by 39 publications

(23 citation statements)

References 19 publications

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“…Similarly, the low temperatures of the area reduce the efficiency of photolysis in natural water, because it has been shown to be positively correlated with temperature [29]. Similar findings were reported for PCBs [30][31][32].…”

Section: Data In Perspectivesupporting

confidence: 83%

Polynuclear aromatic and chlorinated hydrocarbons in mussels from the coastal zone of Ushuaia, Tierra del Fuego, Argentina

Amin¹,

Comoglio²,

Sericano

2011

Enviro Toxic and Chemistry

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Mussels (Mytilus edulis chilensis) were collected from 12 coastal locations in Ushuaia Bay, Argentina, and the surrounding area in October 1999 and again in October 2003. Concentrations of polynuclear aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and selected chlorinated pesticides were determined to assess the impact of a fast-growing population in the area. Total PAH concentrations ranged from 2.24 to an extremely high concentration of 2,420 µg/g lipid measured in mussels collected near an oil jetty used to discharge to shore storage tanks. The composition of PAHs in these samples indicates that the source of these compounds inside Ushuaia Bay is predominantly petrogenic, with some pyrogenic background, whereas mostly pyrogenic-related PAHs were evident in areas outside the bay. Total concentrations of PCBs ranged between 12.8 and 8,210 ng/g lipid, with the highest concentration, detected inside Ushuaia harbor, representing a 10-fold increase when compared with historical data. Chlorinated pesticides were detected at comparatively lower concentrations, with 4-4'- 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene being the most common. The aggressive increase in population and related activities observed in the city of Ushuaia over the last two decades might have affected the environmental quality of the local bay. Moreover, the oceanographic and atmospheric conditions existing in Ushuaia Bay and surrounding areas may favor the accumulation and long-term presence of these organic pollutants in all compartments of this fragile environment.

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Section: Data In Perspectivesupporting

confidence: 83%

Polynuclear aromatic and chlorinated hydrocarbons in mussels from the coastal zone of Ushuaia, Tierra del Fuego, Argentina

Amin¹,

Comoglio²,

Sericano

2011

Enviro Toxic and Chemistry

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“…Titanium(IV) oxide including three polymorphs of anatase, rutile, and brookite is commonly used to enhance the quantum yields of photocatalyses [16]. Apparent quantum yield is calculated as the ratio between the amount of reactant degraded and the amount of quantum emitted [19].…”

Section: Introductionmentioning

confidence: 99%

Photocatalysis of 2,2′,3,4,4′,5′-hexachlorobiphenyl and its intermediates using various catalytical preparing methods

Lin

Chen

Huang

et al. 2006

Journal of Hazardous Materials

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“…For this reason, many investigations started to focus on the use of high -70 -energy, low wavelength (254 -300 nm) radiation for dechlorination of PCBs. Lin et al, (2004) observed the effect of diethylamine and xenon simulated on the photodegradation of PCBs in transformer oil and PCB 138. Xenon lamp of 150 W was used in the study which resulted to a significant photodegradation of PCBs.…”

Section: Introductionmentioning

confidence: 99%

Effect of Light Intensity on the Photodegradation of PCB 153 in Aqueous Solution using UV and UV/H2O2

Macawile

Centeno

Abella

et al. 2011

J. of Wat. & Envir. Tech.

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This study examines the photodegradation of PCB 153 under ultraviolet radiation and ultraviolet radiation combined with hydrogen peroxide (H 2 O 2 ) using a batch tubular recirculating photoreactor equipped with 17 W and 24 W UV-C lamps emitting at 254 nm. PCB 153 solutions with various concentration of 50 ppb, 80 ppb and 100 ppb were prepared for experiments conducted under photolysis (UV only) while 25 L (0.221 mM), 50 L (0.441 mM), 75 L (0.662 mM) of 30% (w/w) H 2 O 2 were individually added to an 80 ppb PCB 153 solution and used as samples for UV/H 2 O 2 experimental runs. Under ultraviolet radiation, the increase of light intensity from 17 W to 24 W increased the degradation from 90.43% to 94.71% of an 80 ppb aqueous PCB 153 solution after 2 hrs of irradiation. The addition of 50 μL (0.441 mM) of 30% wt H 2 O 2 resulted into a drastic decrease of the same concentration of PCB 153. After 30 minutes of irradiation using 17 W UV lamp, 95.95% PCB degradation was observed while complete degradation was attained with the 24 W UV lamp. The pH of the solutions was closely monitored and it was observed that it decreases during photodegration. The decrease of the sample's pH was a result of inorganic chlorides and acidic metabolites formation as measured using High Performance Liquid Chromatography (HPLC) -Conductivity Detector. Likewise, the PCB concentration of irradiated samples was measured using Gas Chromatography equipped with Electron Capture Detector (GC-ECD).

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Effect of photosensitizer diethylamine on the photodegradation of polychlorinated biphenyls

Cited by 39 publications

References 19 publications

Polynuclear aromatic and chlorinated hydrocarbons in mussels from the coastal zone of Ushuaia, Tierra del Fuego, Argentina

Polynuclear aromatic and chlorinated hydrocarbons in mussels from the coastal zone of Ushuaia, Tierra del Fuego, Argentina

Photocatalysis of 2,2′,3,4,4′,5′-hexachlorobiphenyl and its intermediates using various catalytical preparing methods

Effect of Light Intensity on the Photodegradation of PCB 153 in Aqueous Solution using UV and UV/H2O2

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