Adsorption of phthalic acid esters from seawater

Sediment–Water Interactions of Bisphenol A Under Simulated Marine Conditions

“…When the seawater varied with increasing salinity from 1:2 diluted artificial seawater to artificial seawater, K F increased by approximate twofold. Thus, it is believed that an increase in salinity is more advantageous to enhance the sorption of BPA on marine sediments, and such conclusions were previously reported (Sullivan et al 1982;Zhou and Rowland 1997;Means 1995;Preston and Al-Omran 1986;Zhao and Yang 2002). For the case, it is reasonable to ascribe the increase in K F with salinity to "salting out" effect that changes BPA solubility in seawater.…”

Application of Quantitative Structure–Activity Relationships for Assessing the Aquatic Toxicity of Phthalate Esters

“…Di-2-ethylhexyl phthalate (DEHP) represents the most widely used plasticizer with an annual production in the 1990s of 400,000 metric tons (mt) in western Europe (Cadogan et al, 1994) and about 125,000 mt in both the United States and Japan (C&EN, 1996). PEs are often present in laboratory equipment and reagents and have long been recognized as frequent contaminants in trace environmental analysis (Sullivan et al, 1982). Widespread use of PEs has prompted several decades of extensive environmental fate and e!ects research.…”

Phthalic Acid Esters

“…In their analyses they distinguish particulate-adsorbed and dissolved PAEs by removing particulates by filtration on glass fiber filters in a stainless steel holder. Since humic materials [39,155,181] and sediments [225,226] adsorb phthalates strongly, this separation of the liquid and particulate phases is important for accurate solution phase data.…”

“…Sullivan, Atlas, and Giam [225,226] have published two studies describing the problems resulting from adsorption ofphthalates on various materials. They found that upon standing, phthalate samples reversibly adsorbed to glass, leading to anomalously low analytical results.…”

“…Thus, the site, concentration and sample variability of this effect is quite high. Sullivan and coworkers [225] advocate the use of sodium azide as an antimicrobial for standard solutions.…”