Results 251 to 260 of about 3,190,083 (298)

Nitrobenzene. Determination in workplace air

Podstawy i Metody Oceny Środowiska Pracy, 2018
Nitrobenzene is a pale yellow oil with an almond-like odor. On an industrial scale it is obtained by nitration of benzene with a mixture of concentrated sulfuric acid, water and nitric acid. The compound is used in the production of aniline. Nitrobenzene is possibly carcinogenic to humans.
Anna Jeżewska, Agnieszka Woźnica
openaire   +1 more source

Chlorobenzene. Determination in workplace air

Podstawy i Metody Oceny Środowiska Pracy, 2019
Chlorobenzene is a colorless, flammable liquid that has an almond-like odor. It is used in industry as a solvent: resins, paints and fats, raw material for the production of plastics, as well as for the production of phenol, aniline and nitrobenzene. Occupational exposure to chlorobenzene vapors can occur through inhalation, absorption through the skin
Anna Jeżewska, Agnieszka Woźnica
openaire   +1 more source

Dimethyl phthalate. Determination in workplace air

Podstawy i Metody Oceny Środowiska Pracy, 2017
Dimethyl phthalate (DMP) is a colourless liquid with a slight aromatic odour. It is used in industry as a plasticizer of plastics, as an ingredient of fragrances in the production of cosmetics and detergents. Occupational exposure to DMP can occur through inhalation, or ingestion.
openaire   +1 more source

Spectrophotometric determination of silicon tetrahydride in the air of workplace

Journal of Huazhong University of Science and Technology [Medical Sciences], 2015
A new, simple and sensitive method was developed for the determination of silicon tetrahydride in the air of workplace in this study. The alkaline resin-based spherical activated carbon was used to collect sample of silicon tetrahydride at workplace. Silicon tetrahydride was then desorbed from active carbon in 100°C hot water.
Na-Li, Gu, Ting-Ming, Shi, Zhi-Hong, Zhang, Sheng-Wen, Shao, Tao, Jing, Wei-Hong, Chen   +5 more
openaire   +2 more sources

Workplace air sampling and polarographic determination of formaldehyde

American Industrial Hygiene Association Journal, 1982
A polarographic method has been developed for the determination of formaldehyde in workplace air. Samples are collected in midget fritted glass bubblers containing an aqueous solution of 10% methanol. The collected formaldehyde in the absorbent solution is derivatized with hydrazine reagent to form a formaldehyde hydrazone compound.
J C, Septon, J C, Ku
openaire   +2 more sources

Breathing clean air in the workplace

Filtration + Separation, 2020
In some industrial sectors the ambient atmospheric air is too contaminated for operatives to breathe safely. Andy Lill, business development manager for Quality Air at Atlas Copco, discusses the role of compressed air purification as a safe alternative to contaminated air.
openaire   +1 more source

Sampling Intercomparisons for Aldehydes in Simulated Workplace Air

The Analyst, 1997
Thirty one laboratories of various EU Member States have participated in two interlaboratory comparisons in order to assess errors of personal sampling methods associated with both the sampling and the analytical steps. In contrast to conventional quality control schemes, this project particularly focuses attention on the sampling and identification ...
E, Goelen, M, Lambrechts, F, Geyskens
openaire   +2 more sources

Hexachlorobenzene. Determination in workplace air

Podstawy i Metody Oceny Środowiska Pracy, 2019
The aim of this study was to develop and validate a method for determining of inhalable fraction of hexachlorobenzene in workplace air. The determination method is based on the adsorption of hexachlorobenzene on a polypropylene filter, extraction with hexane and an analysis of the resulting solution with gas chromatography with electron capture ...
openaire   +1 more source

But-2-enal. Determination in workplace air

Podstawy i Metody Oceny Środowiska Pracy, 2019
But-2-enal (crotonaldehyde) is a colourless liquid with an unpleasant suffocating odour. But-2-enal occurs naturally in food. It is mainly used for the production of sorbic acid, a food preservative. But-2-enal is a very toxic, highly irritating and allergenic substance – it is suspected of causing genetic defects. The aim of the study was to develop a
Anna Jeżewska, Agnieszka Woźnica
openaire   +1 more source

[Determination of acephate in air of workplace].

Wei sheng yan jiu = Journal of hygiene research, 2010
To establish a standard gas chromatographic method for determinating acephate in air of workplace.Acephate in the air was collected with polyurethane foamed plastics, desorbed with methanol, separated and determined by capillary GC column.The penetrant capacity of polyurethane foamed plastics tube was more than 2.4 mg, the desorption efficiency was ...
Jianrong, Chai, Suxia, Yu, Hongfang, Tang   +2 more
openaire   +1 more source