Distribution and ecological risk of organic pollutants in the sediments and seafood of Yangtze Estuary and Hangzhou Bay, East China Sea

Polychlorinated biphenyls and organochlorine pesticides in water and sediment from Volturno River, Southern Italy: occurrence, distribution and risk assessment

“…The concentrations of PCBs in the Volturno River have been analysed and compared with the concentrations found in other rivers and estuary in the world, to understand the degree of contamination due to these pollutants. As showed in Table 2, PCBs in samples from the Volturno River were similar to those found in the Hangzhou Bay, China [33], in the Chenab River, Pakistan [34], in the Portuguese coast, Portugal [35] and in Chenab River, Pakistan, by [36]. The concentrations were higher than those presented in the Tokyo Bay, Japan [37], in the Chao River, China [38], in the Haizhou Bay, China [27], in the Daliao River Estuary, China [39], in the Shuangtzaizi Estuary, China [9], in the Chaohu Lake, China [28], in the Yellow River, China [11], in the China Sea, China [40], in the Congo River Basin, Congo [41], in the Congo River Basin, Congo [42], in the Izmir Bay, Turkey [43], in the Nador Lagoon, Marocco [44], in the Morava River, Czech Republic [45], in the Plitvice Lake, Croazia [46], and in the Adriatic Sea, Italia [47]; but lower than those found in Moscow River, Russia [48], in the Yangtze Estuary, China [10], in the Ravi River, Pakistan [49], in the Umgeni River, South Africa [50], in the Msunduzi River, South Africa [51], in the Sea Lots, Trinidad and Tobago [52], in the Panama Canal and California Coast, USA [53], in the Bedford Harbor, USA [54], in the Chiacago Ship Canal, USA [55], in the Midway Atoll, Hawaii [56], in the Portuguese Coastal area, Portugal [57], in the Rhone River, France [58], in the Huveaune River, France [59], in the Durance River and Berre Lagoon, France…”

“…Compared with other polluted rivers in the world Table 4, OCPs in samples from the Volturno River were close to those found in the Plitvice Lakes, Croatia [46], in the Arc River, France [16] and in the Izmir Bay, Turkey by [43]. The concentrations were much higher than those presented in the Yangtze River, China [73], in the Yangtze River, China [74], in the China Sea, China [40], in the Congo River Basin, Congo [42], in the Gulf of Batabanò, Cuba [75] and in the Durance River and Berre Lagoon, France [60]; but lower than those found in the Bengal Bay, India [76], in the Pearl River Delta, China [77], in the Poyang Lake, China [78], in the Hangzhou Bay, China [33], in the Hangzhou Bay, China [79], in the Awash River Basin, Ethiopia [80], in the Nairobi River, Kenya [69], in the Sea Lots, Trinidad and Tobago [52], in the Jaguaribe River, Brazil [81], in the Portuguese Coastal Area, Portugal [57], in the Moscow River, Russia [48], in the Candarli Gulf, Turkey [82], in the Egyptian Coast, Egypt [83], in the River Po, Italy [63], in the Northern coast of Cyprus [84] and in the Someşu Mic River, Romania [61].…”

Distribution, sources and ecological risk assessment of polycyclic aromatic hydrocarbons in water and sediments from Tiber River and estuary, Italy

“…Differently, the ERMs and PELs represent mid-range above which adverse effects would occur frequently. ERLs-ERMs and TELs-PELs represent a possible-effects range, within which negative effects would occasionally occur (Di Leonardo et al, 2014;Li et al, 2015a;Wang et al, 2015b;Adeleye et al, 2016). In the Tiber River, the total PAH concentrations in sediment samples were below the TEL and ERL values and significantly lower than the PEL and ERM values (Table 3).…”

Levels, Sources and Potential Risks of Polychlorinated Biphenyls and Organochlorine Pesticides in Sediments of Qingduizi Bay, China: Does Developing Mariculture Matter?

“…More than 10,000 tons of PCBs, 0.4 million tons of DDTs, and 4.5 million tons of HCHs were used in China from the 1950s to 1980s owing to the population explosion and the increasing requirements for food (Wei et al, 2007;Bao et al, 2012). Though, in China, the manufacture and agricultural usage of most PCBs and OCPs were banned in 1974 and 1983, respectively (Wang et al, 2005), these organic chemicals can still be routinely detected in various environmental compartments (i.e., in air, water, soil, sediments, and organisms) (Adeleye et al, 2016;Li et al, 2017;Zhao et al, 2018). Due to the slow degradation of PCBs and OCPs, the residues and their catabolites would persist in the ecosystem for a long time (Yu et al, 2014;Wu et al, 2015).…”