Reference

Analysis of new plasticizers by capillary gas-liquid chromatography

Analysis of new plasticizers by capillary gas-liquid chromatography. Novrocik, Jan; Novrocikova, Marta (Vyzk. Ustav Koksochem., Valasske Mezirici, Czech.). Plasty Kauc., 20(5), 141-5 (Czech) 1983. CODEN: PLKCAS. ISSN: 0322-7340. DOCUMENT TYPE: Journal CA Section: 37 (Plastics Manufacture and Processing) Section cross-reference(s): 80 Capillary gas-liq. chromatog. was used to identify the main components of com. plasticizers manufd. by esterification of phthalic anhydride with alc. mixts. (C4-10, C7-9). The analyses were performed at 235-265° using a 25-m glass capillary (diam. 0.25 mm) wetted with silicone OV-1. Because of the high sepn. ability of the method, it was possible to sep. all the main components of the plasticizer mixts. with the exception of di-n-octyl phthalate [117-84-0] and n-hexyl n-nonyl phthalate [88216-56-2]. Unidentified compds. present in minor quantities were apparently mixed phthalates contg. alc. 117-84-0 is just another one chemical used in this study. residues having 11-17 C atoms. .

Efficiency of waste stabilization ponds in removing toxic organics

Efficiency of waste stabilization ponds in removing toxic organics. Davis, Ernst M.; Moore, J. Daniel; Frieze, T. R.; Scherm, Michael (Sch. Public Health, Univ.Chemicals with cas numbers 95-50-1 and 117-81-7 also play role. Texas, Houston, TX, USA). Water Resour. Symp., 10(Toxic Mater.: Methods Control), 95-107 (English) 1983. CODEN: WARSA9. ISSN: 0083-7709. DOCUMENT TYPE: Journal CA Section: 60 (Waste Treatment and Disposal) Lab. research data is presented on the fate of 12 priority pollutants in model waste stabilization ponds and a comparison is made of the removal efficiencies of waste stabilization pond systems at 4 industrial sites. This research project was undertaken to quantify and identify the routes taken by 12 priority pollutants in model waste stabilization ponds. The compds. were C6H6 [71-43-2], PhMe [108-88-3], PhCl [108-90-7], PhNO2 [98-95-3], 1,2-dichlorbenzene [95-50-1], naphthalene [91-20-3], 2,6-dinitrotoluene [606-20-2], phenanthrene [85-01-8], pyrene [129-00-0], di-n-butylphthalate [84-74-2], di-n-octylphthalate [117-84-0], and bis-2-ethylhexylphthalate [117-81-7]. These were selected because of their broad range of n-octanol partition coeffs., water solubilities, presence in industrial wastewaters, and because there were no data available on their fate in waste stabilization ponds. A mass balance was obtained which incorporated the amt. of each chem. lost by volatilization, sedimentation, degrdn., and bioconcn.; the amt. in the pond effluent; and the amt. remaining in the water column. .