Distribution and sources of aliphatic and polycyclic aromatic hydrocarbons in suspended particulate matter in water from two Brazilian estuarine systems

Urban rivers as conveyors of hydrocarbons to sediments of estuarine areas: Source characterization, flow rates and mass accumulation

“…inmet.gov.br). In general concentrations were far above those reported by Maioli et al (2011) for SPM from the Paraiba do Sul River (12.9-257.5 μg g −1 ), the major river in the Brazilian Southeastern coast, and are of the same order as those reported by Bakhtiari et al (2009) for the Langat River basin (Peninsular Malaysia) (5900-23,000 μg g −1 ), also characterized by intense urbanization and industrial growth.…”

Sources and preservation of organic matter in soils of the wetlands in the Liaohe (Liao River) Delta, North China

“…The ratios of UCM to resolved C 25 -C 35 n-alkanes (U/A) vary from <0.1 to 0.9 (excluding sites 63 and 94). These U/A ratios are below the criterion of petroleum contamination (U/A > 4) proposed by Maioli et al(2011), indicating that petroleum contamination appeared at relatively low or moderate level in the LRD, except at few sites (63 and 94) in this delta. This was mainly due to the high stock of soil OM derived from higher plants in this area.…”

Spatial and temporal distribution of aliphatic hydrocarbons and linear alkylbenzenes in the particulate phase from a subtropical estuary (Guaratuba Bay, SW Atlantic) under seasonal population fluctuation

“…The total AH concentrations by SPM weight ranged from 39.3 to 1591.4 μg g −1 dry weight. These levels are within the same range as those found in other coastal regions under human influence, such as the Rio de La Plata estuary (Argentina and Uruguay; Colombo et al, 2007), Lake Tunis (Tunisia; Mzoughi and Chouba, 2011) and certain Chinese rivers (China; Guo et al, 2010), and the levels are above those found in the Mundaú-Manguaba estuarine system, which receives agricultural and urban sewage (Brazil; Maioli et al, 2011). However, due to the wide mangrove coverage, the hydrocarbons levels observed in Guaratuba Bay may also be related to natural sources.…”