Distribution and sources of polycyclic aromatic hydrocarbons in the aquatic environment: a multivariate analysis

Abstract

ResumoNesse trabalho, 14 dos hidrocarbonetos policíclicos aromáticos (HPA) incluídos pelo Environmental Protection Agency (EPA) na lista de poluentes prioritários foram analisados através de cromatografi a gasosa com espectrometria de massas acoplada (GC-MS). A amostragem das águas superfi ciais foi realizada no estuário do rio Paraguaçu e do rio Jaguaripe (Bahia), nordeste do Brasil. Concentrações totais de HPAs variaram de 0,0029 a 0,1079 ng/L em águas superfi ciais (rios principais, afl uentes), com valor médio de 0,0344 ng/L. Tais concentrações podem ser tomadas como valores-base para a região estudada. Os perfi s de HPAs foram dominados por HPAs de baixo peso molecular (dois ou três anéis de componentes) em amostras de água superfi cial. Isto é indicativo de sua origem a partir de óleo ou contaminação residual (entrada petrogênica). Os dados recolhidos mostram que entrada petrogênica foi predominante em quase todas as estações investigadas. Para discriminar diferenças e semelhanças entre as amostras, a análise de componente principal (ACP) foi realizada utilizando uma matriz de correlação. A ACP revelou as relações entre todas as águas superfi ciais das estações investigadas. Palavras-chave:Hidrocarbonetos policíclicos aromáticos (HPA), água superfi cial, fonte, cromatografia à gás-espectrometria de massas (CG-EM), análise da componente principal (ACP). Abstract Fourteen polycyclic aromatic hydrocarbons (PAHs) included in the US Environmental Protection Agency's (EPA) priority pollutant list were analyzed using gas chromatography-mass spectrometry (GC-MS

Determination of polycyclic aromatic hydrocarbons (PAHs) in drinking water of Samsun and it’s surrounding areas, Turkey

“…It is therefore imperative that chemical, physical and bacteriological analyses be undertaken continuously for drinking water and usable water. Organic compounds that are a cause of water pollution, many of which are toxic and carcinogenic have been of concern worldwide [2]. Among these organic compounds, PAHs have the lowest solubility in water hence they tend to absorb strongly to particles and sediments.…”

Amphoteric, Sulfonamide-Functionalized “Polysoaps”: CO2-Induced Phase Separation for Water Remediation

“…Assuring the quality and availability of clean drinking water is a major global objective, spurred recently by well-documented reports of contamination by pollutants including pharmaceuticals, pesticides, and polycyclic aromatic hydrocarbons (PAHs). − These types of chemicals typically enter water sources through sewer drainage and water runoff or from industrial waste disposal. − The presence of PAHs and related hydrophobic compounds in water sources has been linked to cancer and birth defects. − Unfortunately, removal of these harmful chemicals has proven to be challenging due to the low efficiency and high cost of commercial purification techniques. − …”

Enzymatic response of Macrobrachium jelskii (Miers, 1877) exposed to water from urban and rural rivers in Bahia, Brazil

“…The main pollutants from petrochemical activities include polycyclic aromatic hydrocarbons (PAHs), alkylphenols, diesel fuel, and hydrocarbons (Martínez-Gómez et al, 2006;Nudi et al, 2010;Lushchak, 2011;Zanette et al, 2011;Turja et al, 2020). For instance, PAHs are a group of organic pollutants of great impact to environment and human health (Celino et al, 2010;Sedeño-Díaz & López-López, 2013;Turja et al, 2020). In freshwater environment, contamination by PAHs is particularly serious because the solubility of these chemicals increases in low salinities (Ramachandran et al, 2006).…”