نتایج جستجو برای: 4 nonylphenol
تعداد نتایج: 1304143 فیلتر نتایج به سال:
Samplers based on the diffusive gradients in thin films for organics (o-DGT) were developed and applied Brazilian aqueous matrices determination of four emerging contaminants (EC): 4-octylphenol, 4-nonylphenol, triclosan, bisphenol A. The OASIS HLB resin used as binding phase presented a high sorption capacity extraction associated with sonication, using mixture acetonitrile methanol (2:1, v v-...
The occurrence of alkylphenol and alkylphenol ethoxylates (APEs) was determined over a 74-mile length of the Cuyahoga River, Ohio. Measurable levels of both the octyl and nonyl forms of these abundantly used nonionic surfactants were observed with the nonylphenol (NP) plus nonylphenol ethoxylates (NPEs) typically accounting for greater than 90% of the total APEs in each sample. For all media (w...
This study investigates the potential migration of plasticisers, plastic components and additives from several plastic water bottles. Compounds studied were phthalates (dimethyl phthalate, di-n-butyl phthalate, benzylbutyl phthalate, bis(2-ethylhexyl) phthalate), bis(2-ethylhexyl) adipate, octylphenol, 4-nonylphenol and bisphenol A. Polycarbonate (PC), high-density polyethylene (HDPE), low-dens...
The aim of this study was to compare results obtained by eight different short-term assays of estrogenlike actions of chemicals conducted in 10 different laboratories in five countries. Twenty chemicals were selected to represent direct-acting estrogens, compounds with estrogenic metabolites, estrogenic antagonists, and a known cytotoxic agent. Also included in the test panel were 17beta++-estr...
Analytical methods for determining 14 endocrine-disrupting compounds (EDCs) in coastal waters, suspended particles, and sediment samples were successfully performed by ultrafast liquid chromatography with photodiode array fluorescence detections (UFLC-PDA-FLD). Solid‑phase extraction (SPE) ultrasound-assisted (USE) used sample preparation. Two chromatographic have been developed. An isocratic s...
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