Alkylphenol ethoxylates: trace analysis and environmental behavior
Article Abstract:
Alkylphenol ethoxylates (APEOs) are nonionic surfactants used widely as cleaning agents, dispersants, and emulsifiers, and generally disposed in waste water to municipal sewage systems. Biodegraded APEOs and treated sewage sludge may be environmentally harmful, and 4-nonylphenol constituents may have estrogenic activities at low concentrations. Analysis of APEOs in the treatment stream and effluent requires acidification or other preservation of samples to stabilize the analytes.
Publication Name: Chemical Reviews
Subject: Chemistry
ISSN: 0009-2665
Year: 1997
User Contributions:
Comment about this article or add new information about this topic:
Environmental impact of fuel cell technology
Article Abstract:
Fuel cell technology is an efficient technology in both ecological and economical point of view. A fuel cell uses an invariant electrode-electrolyte systems to convert chemical energy into electrical energy. Economic factors decide the type of fuel cell to be used in street vehicles, and alkaline 'space vehicle systems' are the best performing fuel cells. High electrochemical reactivity of hydrogen makes hydrogen as an efficient fuel for fuel cells.
Publication Name: Chemical Reviews
Subject: Chemistry
ISSN: 0009-2665
Year: 1995
User Contributions:
Comment about this article or add new information about this topic:
Growth factor-dependent signaling and cell cycle progression
Article Abstract:
Research has been conducted on the growth factor-dependent signaling. The link between this signaling and the cell cycle progression has been investigated and discussed.
Publication Name: Chemical Reviews
Subject: Chemistry
ISSN: 0009-2665
Year: 2001
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Selenium concentrations in natural and environmental waters. Natural terphenyls: Developments since 1877
- Abstracts: Interactions between carbocations and anions in crystals. General characteristics. Present general status of understanding of heteropoly electrolytes and a tracing of some major highlights in the history of their elucidation
- Abstracts: Synthesis of trans-2,3-dimethoxy-3-(phenylamino)flavanones and related compounds. Polyacrylic acid pore-filled microporous membranes and their use in membrane-mediated synthesis of nanocrystalline ferrihydrite
- Abstracts: State-resolved collision-induced electronic transitions. Highly fluorescent noble-metal quantum dots. Nonadiabatic transitions: what we learned from old masters and how much we owe them
- Abstracts: Average energy approximations for anisotropic triple-dipole dispersion energy coefficients using three-body interactions involving O2, NO, CO, N2, H2, and the rare gases as tests