Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Levels of workplace exposure

A L Rickards

    The Annals of Occupational Hygiene
    |August 1, 1994
    PubMed
    Summary
    This summary is machine-generated.

    Workplace exposure monitoring evolved from particle counting to membrane filter microscopy. This method, while useful, has limitations in detecting small fibers and differentiating fiber types, prompting efforts for harmonization.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Estimation of trace amounts of chrysotile asbestos by x-ray diffraction.

    Analytical chemistry·2012
    Same author

    One-year follow-up of the outcome of a randomized controlled trial of a home-based intervention programme for children with autism and developmental delay and their families.

    Child: care, health and development·2009
    Same author

    Newborn screening for congenital hypothyroidism, Victoria, Australia, 1977-1997. Part 1: The screening programme, demography, baseline perinatal data and diagnostic classification.

    Journal of pediatric endocrinology & metabolism : JPEM·2002
    Same author

    Newborn screening for congenital hypothyroidism, Victoria, Australia, 1977-1997. Part 2: Treatment, progress and outcome.

    Journal of pediatric endocrinology & metabolism : JPEM·2002
    Same author

    Auditory function at 14 years of age of very-low-birthweight.

    Developmental medicine and child neurology·2001
    Same author

    Cognition, academic progress, behavior and self-concept at 14 years of very low birth weight children.

    Journal of developmental and behavioral pediatrics : JDBP·2001

    Area of Science:

    • Occupational Health and Safety
    • Environmental Science
    • Microscopy Techniques

    Background:

    • Workplace exposure monitoring has evolved significantly since the 1930s.
    • Early methods focused on particle counting, later advancing to membrane filter techniques.
    • Historical data primarily served workplace control objectives.

    Purpose of the Study:

    • To describe the historical evolution of workplace exposure monitoring methods.
    • To highlight the capabilities and limitations of the membrane filter phase contrast microscope method.
    • To discuss ongoing efforts towards harmonizing fiber counting methods.

    Main Methods:

    • Review of historical developments in workplace exposure monitoring.
    • Description of the membrane filter phase contrast microscope method for fiber counting.

    Related Experiment Videos

  • Discussion of changes and limitations within the membrane filter method.

    • Main Results:

    • The membrane filter method provides an index of exposure but may not count fibers <0.2 microns.
    • The method counts all fiber types collectively, lacking individual fiber analysis.
    • Variations in the membrane filter method have occurred over time.

    Conclusions:

    • The membrane filter phase contrast microscope method is a key technique for workplace exposure assessment.
    • Limitations exist regarding fiber size detection and type differentiation.
    • International initiatives by the Asbestos International Association (AIA) and WHO aim to improve and standardize fiber counting procedures.