Indoor air quality and health problems associated with damp floor coverings

Short Communication

Abstract

Objectives

To study the relationship between a high incidence of bronchial asthma among employees working in an office building and an indoor air problem related to the degradation of polyvinyl chloride (PVC) floor coverings in the building. The indoor air measurements and results of renovations are also described.

Methods

Employees’ symptoms were surveyed by a questionnaire, and the incidence of asthma was calculated from the medical records for 1997–2000. The quality of indoor air was assessed by microbial sampling and by investigation of the building for possible moisture damage. Indoor air was sampled for volatile organic compounds (VOCs) through Tenax adsorbent tubes. In situ volatile emission measurements from the concrete floor were performed via the field and laboratory emission cell (FLEC) method.

Results

In an office with approximately 150 employees, eight new cases of asthma were found in 4 years. In addition, the workers complained of respiratory, conjunctival and nasal symptoms. Emissions indicating the degradation of plastic floor coverings (e.g. 2-ethyl-1-hexanol, 1-butanol) were found in the indoor air and floor material samples. The plastic floor coverings, adhesives and the levelling layers were carefully removed from 12 rooms. The VOCs had diffused into the underlying concrete slabs. The concrete was warmed to remove the diffused VOCs from these areas. After the repairs the concentrations of the VOCs indicating the degradation of PVC, decreased, as did the prevalence of the employees’ symptoms and several asthma patients’ need for medication.

Conclusions

The workers in the office building complained of several respiratory, conjunctival and dermal symptoms. The incidence of adult-onset asthma was approximately nine-times higher than that among Finns employed in similar work. The most probable single cause of the indoor air problem was the degradation of the plastic floor coverings.

Keywords

Indoor air PVC Chemical impurities Asthma 

References

  1. Andersen AA (1958) New sampler for collection, sizing and enumeration of viable airborne particles. J Bacteriol 76:471–484PubMedGoogle Scholar
  2. Bornehag CG, Blomquist G, Gyntelberg F, Järvholm B, Malmberg P, Nordvall L, Nielsen A, Pershagen G, Sundell J (2001) Dampness in buildings and health. Nordic interdisciplinary review of the scientific evidence on associations between exposure to “dampness” in buildings and health effects (NORDDAMP). Indoor Air 11:72–86CrossRefPubMedGoogle Scholar
  3. Gustavsson H, Lundgren B (1997) Off-gassing from building materials: a survey of case studies. In: Brune D, Gerhardsson G, Crockford GW, Dáuria D (eds) The workplace, vol 1. Fundamentals of health, safety and welfare. International Labor Office, Geneva, pp 533–555Google Scholar
  4. Husman T (1996) Health effects of indoor-air microorganisms. Scand J Work Environ Health 22:5–13Google Scholar
  5. Jaakkola JJ, Verkasalo PK, Jaakkola N (2000) Plastic wall materials in the home and respiratory health in young children. Am J Public Health 90:787–789Google Scholar
  6. Karjalainen A, Kurppa K, Martikainen R, Karjalainen J, Klaukka T (2002) Exploration of asthma risk by occupation—extended analysis of an incidence study of the Finnish population. Scand J Work Environ Health 28:49–57PubMedGoogle Scholar
  7. Mizoue T, Reijula K, Andersson K (2001) Environmental tobacco smoke exposure and overtime work as risk factors for sick building syndrome in Japan. Am J Epidemiol 154:803–808CrossRefPubMedGoogle Scholar
  8. Norbäck D, Wieslander G, Nordström K, Wålinder R (2000) Asthma symptoms in relation to measured building dampness in upper concrete floor construction, and 2-ethyl-1-hexanol in indoor air. Int J Tuberc Lung Dis 4:1016–1025PubMedGoogle Scholar
  9. Pasanen A-L, Korpi J-P, Pasanen P (1998) Critical aspects on the significance of microbial volatile metabolites as indoor air pollutants. Environ Int 24:703–712CrossRefGoogle Scholar
  10. Peat JK, Dickerson J, Li J (1998) Effects of damp and mould in the home on respiratory health: a review of the literature. Allergy 53:120–128PubMedGoogle Scholar
  11. Samson A, Flannigan B, Flannigan ME, Verhoeff AP, Adam OCG, Hoekstra ES (1994) Recommendations, health implications of fungi in indoor environments. Air quality monographs, vol 2. Elsevier, AmsterdamGoogle Scholar
  12. Seppänen O, Säteri J (eds) (2001) Classification of indoor climate 2000. Finnish Society of Indoor Air Quality and Climate, Espoo, FinlandGoogle Scholar
  13. Tuomainen M, Pasanen AL, Tuomainen A, Liesivuori J, Juvonen P (2001) Usefulness of the Finnish Classification of Indoor Climate, Construction and Finishing Materials: comparison of indoor climate between two new blocks of flats in Finland. Atmos Environ 35:305–313CrossRefGoogle Scholar
  14. Verhoeff AP, Burge HA (1997) Health risk assessment of fungi in home environments. Ann Allergy Asthma Immunol 78:544–556PubMedGoogle Scholar
  15. Wieslander G, Norbäck D, Nordström K, Wålinder R, Venge P (1999) Nasal and ocular symptoms, tear film stability and biomarkers in nasal lavage, in relation to building-dampness and building design in hospitals. Int Arch Occup Environ Health 72:451–461CrossRefPubMedGoogle Scholar
  16. Wiglusz R, Igielska B, Sitko E, Nikel G, Jarnuszkiewicz I (1998) Emission of volatile organic compounds (VOCs) from PVC flooring coverings. Bull Inst Marit Trop Med 49:101–107Google Scholar

Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  1. 1.Department of Occupational Hygiene and ToxicologyKuopio Regional Institute of Occupational HealthKuopioFinland
  2. 2.Department of Occupational MedicineKuopio Regional Institute of Occupational HealthKuopioFinland
  3. 3.Medivire Occupational Health CentreKuopioFinland

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