Congener-specific composition of polychlorinated biphenyls (PCBs) in soil-air partitioning and the associated health risks

Xu, Chao; Niu, Lili; Zou, Deliang; Zhu, Siyu; Liu, Weiping

doi:10.1016/j.scitotenv.2019.05.334

Cited by 28 publications

(10 citation statements)

References 49 publications

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“…C p represents concentration of pollutant in the edible parts of the crops. The meaning and value of associated parameters used for the risk assessment are shown in Table 2, which are obtained from the USEPA and the corresponding literature, and listed in Table 2 (USEPA , 2008, USEPA, 2015, USEPA, 2018Yu et al, 2011;Wu et al, 2018;Wu et al, 2019;Xu et al, 2014;Xu et al, 2019;Yu et al, 2020;Chen et al, 2021;Sun et al, 2021;Chinese Nutrition Society, 2022. ).…”

Section: Labelmentioning

confidence: 99%

Occurrence and distribution characteristics of PCBs and PBDEs in farmland soils adjacent to electronic circuit board dismantling ruins

Zhang

Chen

Tao

et al. 2023

Front. Environ. Sci.

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The Nanwan village, a green ecological village in Taizhou city, is used as a recycling area (recycling for heavy metal) for electronic circuit boards and as crushing and stacking sites of waste circuit boards for nearly 20 years from 1980s to 2000s. At present, although the e-waste recycling activities in Taizhou city have been effectively controlled, and many areas polluted by the e-dismantling activities have been gradually remediated except Nanwan village. Nanwan village seems to have been forgotten for its special geographical location, which has attracted our attention because of its ecological and food safety issues. Accordingly, the content of polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) in the surface soil around the ruins and four edible agricultural crops were investigated. The main conclusions are as follows: among the four dismantling ruins and surrounding soil samples investigated, the content of Σ20PCBs in vegetable field topsoil of 2(20) is 1,321.3 ± 132.1 μg kg−1; the content of Σ8PBDEs in the paddy soil of 3(1S) is 7,216.9 ± 232.0 μg kg−1; biological toxicity events are likely to occur frequently in 2(20) and 3(1S). PCBs and PBDEs have both horizontal diffusion in distance and vertical diffusion in depth. The lifetime carcinogenic and non-carcinogenic risks of PCBs and PBDEs are at a low risk level, except for the non-carcinogenic risk of PCBs for children in 3(1S). The lifetime carcinogenic and non-carcinogenic risks of PCBs and PBDEs in the edible parts of garlic, ginger, mung beans, and oranges were all at acceptable or negligible levels.

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Section: Labelmentioning

confidence: 99%

Occurrence and distribution characteristics of PCBs and PBDEs in farmland soils adjacent to electronic circuit board dismantling ruins

Zhang

Chen

Tao

et al. 2023

Front. Environ. Sci.

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“…They are used in electrical equipment (capacitors, transformers and ballasts). In the 1980s, their use was banned worldwide because they have a negative impact on the environment and because they are carcinogenic [122,30]. Official Mexican Standard NOM-133-SEMARNAT-2015, Environmental Protection-PCBs-Management Specifications, establishes specifications for the environmentally sound handling and disposal of hazardous waste containing or contaminated with PCBs, involving the removal of PCBs, as well as for the handling and treatment of PCB equipment [123,31].…”

Section: Environmental Toxins Foods and Cancermentioning

confidence: 99%

Cancer prevention programmes in Mexico: are we doing enough?

Padilla-Raygoza

Monroy-Torres

Sandoval-Salazar

et al. 2020

ecancer

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Cancer has increased in all the countries of the world and Mexico is no exception. The recognised risk factors for the main types of cancer are reviewed and searched through the Mexican government web pages and cancer prevention programmes to tackle the risk factors in the population. The Mexican government, a member of the World Health Organization, shows that the main approach is an early diagnosis rather than prevention, forgetting that an ounce of prevention is better than a pound of cure. Effective public programmes should be promoted to reduce preventable risk factors in the population (smoking, nutrition, obesity, diet, environmental toxicity, sedentary lifestyle) and control the non-preventable factors (genetics) if we really want to control the incidence of different types of cancer.

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“…These substances have been found in various parts of the world, including in isolated areas far from those where they were used, in addition to human settlements, and even in breast milk [ 7 ]. Due to their nature, POPs (which are well-known carcinogens) are difficult to degrade, and biodegradation, which for many pollutants is the main elimination mechanism, is limited due to their stable chemical structure, their xenobiotic nature, their low solubility in water, and their strong sorption in the soil [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

“…For this reason, they have been used since the beginning of the 20th century as dielectric and heat exchange fluids, as well as additives in oils, sealants, inks, paper, paints, and coolants, among a wide variety of applications. PCBs generally have a colorless or light-yellow oily liquid appearance, with no odor or taste [ 7 , 8 ]. Due to their high boiling point, low dielectric constant, high solubility in organic solvents, and high stability, they have been used as dielectric fluids in electrical transformers and condensers [ 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Dielectric Mineral Oil with PCBs Content Coupled with Algae Treatment

Suárez

Camargo

Esteso

et al. 2022

Toxics

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Insulating oil contaminated with polychlorinated biphenyls (PCBs) is an environmentally important pollutant. This research focused on the establishment of the optimum conditions under which photocatalytic oxidation can be used together with biotreatment using the Nostoc sp. microorganism to degrade PCBs present in used dielectric oils. Among the optimal conditions studied were PCB concentration, initial pH, and titanium dioxide (TiO2) concentration for the photocatalytic step, and PCB concentration and photoperiod for the biotreatment step. The results indicate that the optimal conditions necessary for photocatalytic degradation were a pH of 6.10, 113 mg/L TiO2, and 765 mg/L PCBs, achieving close to 90% removal. For the biotreatment step, the results showed that PCBs progressively inhibited the microbiological growth, with the lowest cellular growth observed in the medium with the highest PCB concentration.

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Congener-specific composition of polychlorinated biphenyls (PCBs) in soil-air partitioning and the associated health risks

Cited by 28 publications

References 49 publications

Occurrence and distribution characteristics of PCBs and PBDEs in farmland soils adjacent to electronic circuit board dismantling ruins

Occurrence and distribution characteristics of PCBs and PBDEs in farmland soils adjacent to electronic circuit board dismantling ruins

Cancer prevention programmes in Mexico: are we doing enough?

Photocatalytic Degradation of Dielectric Mineral Oil with PCBs Content Coupled with Algae Treatment

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