Carbon monoxide exposure assessment among toll operators in Klang Valley, Kuala Lumpur, Malaysia

S. Niza, H. H. Jamal

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    A comparative cross-sectional study was conducted to determine tollbooth carbon monoxide (CO) levels and carboxyhaemoglobin (COHb) levels among the tollbooth operators and office workers in the Klang Valley, Kuala Lumpur. All tollbooths were equipped with well functioning air-conditioning. The total number of respondents was 180: 90 toll operators and 90 office workers aged between 19 and 52 years. The highest peak of CO level recorded was 61 ppm. The highest average peak CO level within a shift was 30 ppm. The CO level was higher during peak traffic at 6.00 - 8.00 a.m. There was no significant correlation between average peak CO level with vehicle load (r = -0.007, p = 0.474). The toll operators' median COHb level (1.0%, IQR = 0.8%) was significantly higher (p = 0.008) compared to office workers (0.7%, IQR = 0.8). There was a weak and significant correlation between COHb levels with average peak CO levels (r = 0.228, p = 0.031). In conclusion, tollbooth operators were chronically exposed to CO leading to higher COHb levels compared to office workers.

    Original languageEnglish
    Pages (from-to)95-103
    Number of pages9
    JournalInternational Journal of Environmental Health Research
    Volume17
    Issue number2
    DOIs
    Publication statusPublished - Apr 2007

    Fingerprint

    Malaysia
    Carbon Monoxide
    carbon monoxide
    Carbon monoxide
    Carboxyhemoglobin
    valley
    Air Conditioning
    air conditioning
    exposure
    Air conditioning
    Cross-Sectional Studies
    office

    Keywords

    • Carbon monoxide
    • Carboxyhaemoglobin
    • Tollbooth operators
    • Vehicle load

    ASJC Scopus subject areas

    • Environmental Science(all)
    • Environmental Chemistry
    • Public Health, Environmental and Occupational Health

    Cite this

    Carbon monoxide exposure assessment among toll operators in Klang Valley, Kuala Lumpur, Malaysia. / Niza, S.; Jamal, H. H.

    In: International Journal of Environmental Health Research, Vol. 17, No. 2, 04.2007, p. 95-103.

    Research output: Contribution to journalArticle

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