A nationwide survey on indoor air quality will be set up in France in 2003-2004. The aim ofthe survey is to assess household exposure to indoor air pollutants. The target population isthe national housing stock of approximately 24 million permanently occupied housing units.A nationally representative sample of dwellings will be selected based on a three-stagesampling design. At the first stage, the Primary Sampling Units (PSUs) are categorized basedon French territorial divisions. The second stage of the design is the sampling of segmentswithin the PSUs.
Two similar blocks of flats have been built for people with respiratory diseases. The buildingshave a clean and effective ventilation system and low emitting building materials. Theventilation system is a centralized supply and exhaust air system, either based on demand(Building A) or user controlled (Building B). Total volatile organic compound (TVOC) levelsand concentrations of ammonia and formaldehyde were measured in one apartment on each ofthe six floors of both buildings before occupants moved in and after 3 and 7 months and afterone year of occupancy.
An investigation method based on the HACCP system was applied to eleven representativeoffice buildings with HVAC system located in different latitudes in Italy, to evaluate themicrobiological quality of the air supplied. Bacterial and fungal levels near supply airdiffusers pointed out medium-low contamination and analysis of data showed a highermicrobial load in the buildings located in the South of Italy with respect to those in the North.IAQ of five buildings was examined in more detail. Air samples demonstrated an overallgood microbial removal efficiency of the examined HVAC system.
Since the initiative by the government in 1999, indoor air quality (IAQ) has received attentionfrom the community at large in Hong Kong and the education sector has also been activelymonitoring IAQ in line with the proposed objectives. This paper reports the finding of an IAQstudy conducted in 2002 at two vocational education institutes. It begins with a brief review ofIAQ development in the education sector. An outline of the site inspection, the IAQ objectivesand the equipment used in the study then follows.
The paper presents the first and the second phases of a work in progress aimed to prepare aguide for the IAQ evaluation of the real estate of the Politecnico di Milano University, intended for the technicians of the university building department.The overall work is structured in four phases: (1) census and classification of theconstruction and technical features of the buildings; (2) preparation of a check-list for thedetection of hazards based on homogeneous category of building; (3) monitoring ofrepresentative building of the Politecnico real estate; (4) proposal of techniques and materi
The main objective of this study was to investigate the Indoor Air Quality (IAQ) in officebuildings and to understand better how HVAC (Heating, Ventilation and Air-conditioning)systems work and what their effects are on IAQ over a sustained period. Two Frenchcommercial buildings were chosen, located in urban areas of Lyon and Paris, and for one daya month, over the course of 1 year, a number of IAQ related variables were recorded bothinside, including the HVAC system, and outside the buildings.
IAQ investigators have a responsibility to give correct advice to the client. In cases with mould growth, the question of people’s health is often involved. Economical aspects can also be considerable due to the high costs of necessary actions during and
Public health services are increasingly confronted with inquiries from the public concerningindoor air pollution. But so far no standardized procedures have been applied by authoritiesand experts in this field.
Toxicologically derived guidelines for the evaluation of VOC concentrations are still sparse.Therefore a schema is proposed for establishing target or intervention values which includesfollowing basics: i) Guidelines are derived from statistical values of representative studies. ii)Guidelines should refer to standardized analytical methods. iii) Guidelines should exist for allvolatile indoor air contaminants. iv) Possibility of dynamic adaptation, if the VOC mixturechanges. v) Up-to-dateness. vi) TVOC concept and values for groups of VOC should beincluded.
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