Gefahrstoffe Reinhaltung Der Luft 

About: Gefahrstoffe Reinhaltung Der Luft is an academic journal published by VDI Fachmedien. The journal publishes majorly in the area(s): Medicine & Environmental science. It has an ISSN identifier of 0949-8036. Over the lifetime, 358 publications have been published receiving 1092 citations. The journal is also known as: Air quality control (1996).

An emission cell for measurement of volatile organic compounds emitted from building materials for indoor use - the field and laboratory emission cell FLEC

Abstract: The micro emission chamber, the field and laboratory emission cell (FLEC), was developed to satisfy a need for a versatile tool for laboratory and nondestructive field testing of volatile organic compounds (VOCs) emitted from building material surfaces. The FLEC specifications are compatible with those for standard rooms and small chambers. In addition, the overall analytical sensitivity can accommodate a range of odour thresholds.

Comments on the recommendation of the Scientific Committee on Occupational Exposure Limits (SCOEL) for wood dust

Abstract: In June 2002 the Scientific Committee on Occupational Exposure Limits (SCOEL) recommended a health-based exposure limit of 0.5 mg/m 3 for wood dusts and called for comments and opinions on this recommendation. Health impairments of the upper and lower respiratory tracts were taken as a basis, not cancer. The authors comment on this proposal and wish to emphasize that the sampling methods in the studies cited by the SCOEL did not refer to the EN481, and the distribution of the concentrations were not correctly characterized which, in many cases, led to the adoption of far too low exposure values. Furthermore it is difficult to make a distinction between severe and minor health impairments, as described by the SCOEL; moreover, a dose-response relationship is lacking. The authors therefore do not consider an exposure limit to be feasible that is based on the studies cited by the SCOEL.

Intercomparison of mobility particle sizers (MPS)

Abstract: Particles smaller than 100 nm in diameter are generally called ultrafine particles. Ultrafine aerosol particles are ubiquitous: They are found outdoors and indoors, in the environment as well as at workplaces. Most of them are derived from combustion and industrial processes, heating systems, and motor vehicles. The diesel engine is probably the dominant source of ultrafines in urban environment today. Adverse health aspects caused by the inhalation of ultrafine particles have been investigated intensively by e. g. Oberdorster [1]. However, neither standards nor commonly accepted guidelines exist defining requirements for suitable measuring devices and for a procedure and methodology to measure ultrafine aerosols. To provide support for ultrafine aerosol measurements at least for the workplace, ten European in stitutions active in the field of occupational safety and health published a preliminary convention on the principles which should be taken into account [2]. Several methods for measuring number concentrations and size distributions of ultrafine aerosols are known (see for example the electrical low-pressure impactor, ELPI). The measuring principle of combining a differential mobility analyzer (DMA) with a condensation particle counter (CPC) has turned out to be the preferable and most widely used method for environmental and workplace measurements. The physical principle is that the aerosol particles are first brought into charge equilibrium and then classified in a DMA according to their electrical mobility. Electrical mobility is a measure of the particle’s ability to move in an electrical field and is inversely proportional to the particle diameter. The electrical mobility diameter is particularly relevant for ultrafine particles as it is related to their diffusion and deposition (e. g. in the human lung). Once the particles are classified, their number concentration is measured by a CPC. A more

Schwer flüchtige organische Umweltchemikalien in Hamburger Hausstäuben

Abstract: From 1998 to 2000, Hamburg environmental protection authority conducted a survey on 58 non-volatile organics in dust from vacuum cleaner dust bags taken from 65 apartments. Chlorinated paraffins and organotin compounds were determined for the first time in indoor dust matrix. 95-percentiles like 1600 mg/kg for Bis(2-ethylhexyl) phthalate (DEHP), 180 mg/kg for Dibutyl phthalate (DBP), 180 mg/kg for short-chain chlorinated paraffins, 110 mg/kg for Permethrin, 8.7 mg/kg for Monobutyltin, 6.2 mg/kg for Tris(2-chloroethyl) phosphate (TCEP), and 1.1 mg/kg for Benzo[a]pyren were found. Based on questionnaire data regarding the use and/or the presence of certain products in the examined apartments an evaluation procedure is proposed, indicating probable sources of certain non-volatile organic compounds. Some of these may be carpeting made from wool as a probable source of the biocide Permethrin, and floorboards as a probable source of the formerly used biocide DDT, outlawed since 1972.

Endokrin wirksame Substanzen im Hausstaub : Ergebnisse eines repräsentativen Monitorings: Herrn Prof. Dr. P. Köll zum 60. Geburtstag gewidmet

Abstract: In the last years endocrine disrupting properties were detected for some chemicals, i. e. biocides, phthalic esters and alkylphenols. As these compounds may also be present in the indoor environment, it is of interest to know, whether residents may be exposed. Analyses of housedust are one possibility to estimate an exposition, as housedust represents a sink for semivolatile and non volatile substances. Results for the determination of endocrine disrupting biocides, phthalates and phenols in housedust are presented in this paper. Biocides were p,p'-DDT (p,p'-dichlorodiphenyltrichloroethane), lindane (γ-hexachlorocyclohexane), methoxychlor und PCP (pentachlorophenol), phthalates were di-iso-butyl-, di-n-butyl-, benzylbutyl- and di(ethylhexyl)phthalate (DnBP, DiBP, BBP, DEHP) and phenols were n-octylphenol (nOP), tert.octylphenol (tOP), techn. nonylphenol (NP), bisphenol A (BisA) und tert.butylmethoxyphenol (BHA). 95. percentiles, obtained for the ≤63-μm-fraction of the dust samples (n=286) and collected by commercially available vacuum cleaners, amounted to 3.9 mg/kg for DDT, to 0.67 mg/kg for lindane, to 10 mg/kg for methoxychlor, to 8.3 mg/kg for PCP, to 130 mg/kg for DiBP, to 240 mg/kg for DnBP, to 320 mg/kg for BBP, to 2600 mg/kg for DEHP, to 1.5 mg/kg for nOP, to 0.86 mg/kg for tOP, to 18 mg/kg for NP, to 9.2 mg/kg for BisA and to 2.0 mg/kg for BHA. Results for biocides confirm those obtained on earlier studies. Alkylphenols were analysed systematically in housedust for the first time. For phthalates on the other hand no representative data are known up to now. Results are discussed in relation to selected attributes of the households and types of habitation. Details were obtained from interviews of the participants.