This study investigated the effects of the quantity of methylene chloride, used as a carrier solvent for phenanthrene when added to soil, on phenanthrene mineralization kinetics, soil phospholipid fatty add profiles (PLFA), and phenanthrene distribution. Methylene chloride dosages of 25 microL/g soil or more resulted in an enrichment of saturated PLFAs, suggesting soil microorganisms had adjust...

A young man was asked to clean out the residues of an acetate methylene chloride mixture from the sides and bottom of an open vessel some 3ft (1 m) in diameter and 3ft 6ins (1-2 m) deep. He was instructed to use a detergent, hot water, scrubbing brush, and a scraper for the job, but as he had seen the maintenance engineer cleaning the pipework of acetate residue with methylene chloride, he deci...

I read with great interest the paper ‘Characteristics of peaks of inhalation exposure to organic solvents’ (Preller et al., 2004). I noticed that the authors used the MiniRAE Plus Professional Photoionization Detector (PID) (RAE Systems USA) to measure the total organic solvents exposure. My company, Shawcity Ltd, has represented RAE Systems in the UK for 10 years, and we are therefore very fam...

Pestalotiopsis mangiferae Coelomycete fungi were used to examine the production of taxol. The taxol isolated from this fungus is biologically active against cancer cell lines were investigated for its antiproliferative activity in human Non Small Cell Lung Cancer A549 cells. The results showed that the methylene chloride extraction of Pestalotiopsis mangiferae inhibited the proliferation of A 5...

204 8.8 hen using a cast polyurethane processW ing machine, purging o r flushing the mixing head a t frequent intervals is required. Over the years the standard method of purging has been to blow out most of the polyurethane with air or nitrogen followed by pumping through a solvent. The favored solvent for purging has been methylene chloride (MeCI), which functions well technically. Recently, ...

Secondary substrate utilization of methylene chloride was analyzed by using Pseudomonas sp. strain LP. Both batch and continuously fed reactors demonstrated that this strain was capable of simultaneously consuming two substrates at different concentrations: the primary substrate at the higher concentration (milligrams per liter) and the secondary substrate at the lower concentration (micrograms...

−Biodegradation of methylene chloride by a mixed microbial culture, isolated from a common sewage treatment plant, was investigated in a batch system. Batch experiments were performed at room temperature (27 C) and pH value of 7. The methylene chloride concentration in growth media varied from 25 mgl to 250 mgl. A maximum observed degradation was 1 mglh at 100 mgl of methylene chloride. The cul...

This paper deals with removal of contaminants before gas-chromatographic determination of aldosterone in urine. Urine is incubated with beta-glucuronidase, which hydrolyzes all beta-glucuronides except aldosterone-18-glucuronide. The contaminants (the aglycones released and other methylene chloride-soluble substances) are extracted with methylene chloride. Solvolysis of the aqueous phase libera...

The effects of fluorocarbons and chlorinated solvents on the cardiopulmonary system are reviewed. The new information, not hitherto reported, relates to the antagonistic action of inosine, a naturally occurring nucleoside formed in the body by deamination of adenosine. The effect of inosine on methylene chloride toxicity was investigated in open chest dogs anesthetized with pentobarbital sodium...