Results 161 to 170 of about 2,690,718 (207)

Perfluoroalkyl Acids Including Perfluorooctane Sulfonate and Perfluorohexane Sulfonate in Firefighters

Journal of Occupational & Environmental Medicine, 2011
Firefighters were likely exposed to perfluorooctane sulfonate since it was a component of extinguishing foams and perfluorohexane sulfonate (PFHxS), a surfactant coating carpet and other building materials, during firefighting. The objective of the study is to evaluate serum concentrations of perfluoroalkyl acids (PFAAs) in firefighters.A total of 8826
ChuanFang, Jin, YingHua, Sun, Ahmed, Islam, Yong, Qian, Alan, Ducatman   +4 more
openaire   +2 more sources

Phytotoxicity induced by perfluorooctanoic acid and perfluorooctane sulfonate via metabolomics

Journal of Hazardous Materials, 2020
Poly- and perfluoroalkyl substances (PFASs) are becoming common pollutants in natural environment, while the toxic effects and defense mechanisms in agricultural plants are poorly understood. Here, lettuce exposed to either perfluorooctanoic acid (PFOA) or perfluorooctane sulfonate (PFOS) at two different concentrations (500, 5000 ng/L) in hydroponic ...
Pengyang Li, Xihui Oyang, Xiaocan Xie, Zhifang Li, Hongju Yang, Jialin Xi, Yang Guo, Xiujun Tian, Bin Liu, Jiuyi Li, Zhiyong Xiao   +10 more
openaire   +2 more sources

Toxicity of perfluorooctane sulfonic acid and perfluorooctanoic acid to Chironomus tentans

Environmental Toxicology and Chemistry, 2004
Abstract Two perfluorinated surfactants, perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS), were evaluated for their toxicity to the aquatic midge, Chironomus tentans. Impetus for this laboratory study originated from a 10-d, in situ field assessment in which C.
Michelle M, MacDonald, Amanda L, Warne, Naomi L, Stock, Scott A, Mabury, Keith R, Solomon, Paul K, Sibley   +5 more
openaire   +2 more sources

Aquatic predicted no-effect-concentration derivation for perfluorooctane sulfonic acid

Environmental Toxicology and Chemistry, 2011
Abstract Perfluorooctane sulfonic acid (PFOS), a representative perfluorinated surfactant, is an anthropogenic pollutant detected in various environmental and biological matrices. Some laboratory and field work has been conducted to assess the aquatic toxicity of PFOS, but little is known regarding its toxicity threshold to the ...
Ping, Qi, Ying, Wang, Jingli, Mu, Juying, Wang   +3 more
openaire   +2 more sources

Effect of Perfluorooctane Sulfonate on the Conformation of Wheat Germ Acid Phosphatase

Bulletin of Environmental Contamination and Toxicology, 2013
Fluorescence spectroscopy was used to study the quenching mechanism, the type of force and the binding sites of perfluorooctane sulfonate (PFOS) on wheat germ acid phosphatase (ACPase). The results showed that the quenching effect of PFOS on ACPase was mainly due to a static quenching mechanism that occurred via the formation of hydrogen bonds and van ...
Dongmei, Xu, Jianchang, Jin, Tong, Shen, Yanhua, Wang   +3 more
openaire   +2 more sources

Effect of temperature on the sorption and desorption of perfluorooctane sulfonate on humic acid

Journal of Environmental Sciences, 2010
Sorption and desorption of perfluorooctane sulfonate (PFOS) on humic acid at different temperatures were studied. It was found that the sorption process could be modeled with power kinetic equation very well, suggesting that diffusion predominated the sorption of PFOS on the humic acid.
Chengxia, Jia, Chun, You, Gang, Pan
openaire   +2 more sources

Effect of humic acid on the sorption of perfluorooctane sulfonate (PFOS) and perfluorobutane sulfonate (PFBS) on boehmite

Chemosphere, 2015
The sorption of PFOS and PFBS on boehmite was significantly retarded by the competitive sorption of humic acid (HA), implying that PFOS and PFBS are likely more mobile in water and groundwater systems enriched with HA. The sorption behavior of PFOS and PFBS on the HA-modified boehmite surface were also found to differ due to their different chain ...
Wang, F, Shih, K, Leckie, JO
openaire   +4 more sources

Effects of Perfluorooctanoic Acid (PFOA) and Perfluorooctane Sulfonic Acid (PFOS) on Soil Microbial Community

Microbial Ecology, 2021
The extensive application of perfluoroalkyl and polyfluoroalkyl substances (PFASs) causes their frequent detection in various environments. In this work, two typical PFASs, perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS), are selected to investigate their effects on soil microorganisms.
Rui Xu, Wan Tao, Hanzhi Lin, Duanyi Huang, Pingzhou Su, Pin Gao, Xiaoxu Sun, Zhaohui Yang, Weimin Sun   +8 more
openaire   +2 more sources

Perfluorooctane Sulfonate and Perfluorooctanoic Acid as Emerging Contaminants

Inquiry@Queen's Undergraduate Research Conference Proceedings, 1969
 Perfluoroocatane sulfonate (PFOS) and perfluororooctanoic acid (PFOA) are perfluorinated carbons (PFCs) with varying applications for surface coatings and surfactants. They were produced in mass quantities before an overwhelming international movement to reduce production and use.
openaire   +1 more source

Perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) contamination from textiles

Journal of Environmental Science and Health, Part A, 2016
The goals of this study were to determine the concentrations of perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) in textiles and to determine PFOS and PFOA contamination in textile washing water. Quantification analysis was performed by high performance liquid chromatography coupled with tandem mass spectrometry.
Phenpimuk, Supreeyasunthorn, Suwanna K, Boontanon, Narin, Boontanon   +2 more
openaire   +2 more sources