725986

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Pulmonary injury associated with spray of a water-based nano-sized waterproofing product: a case study.

Paul T J Scheepers et al.

Journal of occupational medicine and toxicology (London, England), 12, 33-33 (2017-12-14)

In most reported cases of lung trauma with water proofing products, volatile organic compounds (VOC) have a prominent role. Here we report on a case involving ten workers exposed to a sprayed product containing nanoparticles in a water solution with

Metabolic studies of turinabol in horses.

E N M Ho et al.

Analytica chimica acta, 586(1-2), 208-216 (2007-03-28)

Turinabol (4-chloro-17alpha-methyl-17beta-hydroxy-1,4-androstadien-3-one) is a synthetic oral anabolic androgenic steroid. As in the case of other anabolic steroids, it is a prohibited substance in equine sports. The metabolism of turinabol in human has been reported previously; however, little is known about

Potassium trimethylsilanolate induced cleavage of 1,3-oxazolidin-2- and 5-ones, and application to the synthesis of (R)-salmeterol.

Diane M Coe et al.

Organic & biomolecular chemistry, 1(7), 1106-1111 (2003-08-21)

A convenient and efficient method for the cleavage of 1,3-oxazolidin-5-ones and 1,3-oxazolidin-2-ones utilising potassium trimethylsilanolate in tetrahydrofuran is described. The benzyloxycarbonyl-protecting group is readily removed under the reaction conditions, whereas the N-benzoyl group is stable. A synthesis of (R)-salmeterol exploiting

Gas chromatographic mass spectrometric detection of dihydroxy fatty acids preserved in the 'bound' phase of organic residues of archaeological pottery vessels.

Fabricio A Hansel et al.

Rapid communications in mass spectrometry : RCM, 25(13), 1893-1898 (2011-06-04)

A methodology is presented for the determination of dihydroxy fatty acids preserved in the 'bound' phase of organic residues preserved in archaeological potsherds. The method comprises saponification, esterification, silica gel column chromatographic fractionation, and analysis by gas chromatography/mass spectrometry. The

Research on the relationship between cephalosporin structure, solution clarity, and rubber closure compatibility using volatile components profile of butyl rubber closures.

Xiao-Meng Chong et al.

Drug development and industrial pharmacy, 45(1), 159-167 (2018-09-21)

Establish an effective experimental strategy to determine the compatibility of rubber closures for drugs. Various types of rubber closures with different compositions are available for drug packaging. Many additives of rubber closures can be released from rubber closures and may

Determination of residual clopidol in chicken muscle by capillary gas chromatography/mass spectrometry.

Limin He et al.

Journal of AOAC International, 88(4), 1104-1107 (2005-09-13)

Clopidol was extracted from chicken with acetonitrile, and the extract was evaporated to about 5 mL. The concentrated solution was centrifuged and applied to a glass column filled with basic alumina. The column was eluted with methanol and the methanol

Directed drop transport rectified from orthogonal vibrations via a flat wetting barrier ratchet.

Todd A Duncombe et al.

Langmuir : the ACS journal of surfaces and colloids, 28(38), 13765-13770 (2012-09-01)

We introduce the wetting barrier ratchet, a digital microfluidic technology for directed drop transport in an open air environment. Cyclic drop footprint oscillations initiated by orthogonal vibrations as low as 37 μm in amplitude at 82 Hz are rectified into

Removal and determination of trimethylsilanol from the landfill gas.

Grzegorz Piechota et al.

Bioresource technology, 103(1), 16-20 (2011-10-29)

The removal and determination of trimethylsilanol (TMSOH) in landfill gas has been studied before and after the special E3000-ITC System. The system works according to principle of temperature swing. The performance of TMSOH and humidity removal was 20% and more

An Optimized Adsorbent Sampling Combined to Thermal Desorption GC-MS Method for Trimethylsilanol in Industrial Environments.

Jae Hwan Lee et al.

International journal of analytical chemistry, 2012, 690356-690356 (2012-09-12)

Trimethylsilanol (TMSOH) can cause damage to surfaces of scanner lenses in the semiconductor industry, and there is a critical need to measure and control airborne TMSOH concentrations. This study develops a thermal desorption (TD)-gas chromatography (GC)-mass spectrometry (MS) method for

Reactions of Aldehyde Caused by Tris (trimethylsiloxy) aluminum.

Saegusa T, et al.

Bulletin of the Chemical Society of Japan, 40(8), 1960-1964 (1967)

Quantification of Silicone Oil and Its Degradation Products in Aqueous Pharmaceutical Formulations by 1H-NMR Spectroscopy.

Joan Malmstrøm

Journal of pharmaceutical sciences, 108(4), 1512-1520 (2018-11-25)

During the past years, there has been an increasing focus on the presence of silicone oil as a contaminant in pharmaceutical formulations kept in prefilled syringes (PFSs). As the PFSs are coated on the inner wall with silicone oil (polydimethylsiloxane)

Monitoring of fluorine in urine samples of patients involved in the tokyo sarin disaster, in connection with the detection of other decomposition products of sarin and the by-products generated during sarin synthesis.

D M Hui et al.

Clinica chimica acta; international journal of clinical chemistry, 302(1-2), 171-188 (2000-11-14)

We developed a new assay method for fluoride anion (F(-)) a specific metabolite of sarin. Trimethyifluorosilane (TMFS) was derivatized from F(-) with trimethylsilanol, and TMFS was detected with a GC-flame ionization detector (FID) and capillary column system. The linear range

Genotoxicity studies on selected organosilicon compounds: in vivo assays.

A Isquith et al.

Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 26(3), 263-266 (1988-03-01)

Six organosilicon compounds which had been found to have clastogenic activity in an in vitro battery of genotoxicity assays were evaluated in rat bone marrow cytogenetic assays for assessing clastogenicity in an in vivo system. None of the six compounds

Enrichment of H(2)(17)O from tap water, characterization of the enriched water, and properties of several (17)O-labeled compounds.

Brinda Prasad et al.

Analytical chemistry, 83(1), 231-239 (2010-12-07)

A low-abundance form of water, H(2)(17)O, was enriched from 0.04% to ∼90% by slow evaporation and fractional distillation of tap water. The density and refractive index for H(2)(17)O are reported. Gas chromatography-mass spectrometry (GC-MS) of (16)O- and (17)O-1-hexanols and their

Vibrational spectra of trimethylsilanol. The problem of the assignment of the SiOH group frequencies.

Igor S Ignatyev et al.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 60(5), 1169-1178 (2004-04-16)

The assignment of the SiOH group vibrations of trimethylsilanol, which is still controversial, is proposed. This assignment is based on theoretical B3LYP force field scaled using the constants of the (CH3)3Si group optimized to fit experimental vibrational frequencies of (CH3)3SiF

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