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Document ID (ISN)107659
CIS number 08-166
ISSN - Serial title 0019-8366 - Industrial Health
Year 2006
Convention or series no.
Author(s) Xiao G.B., Morinaga K., Wang R.Y., Xu L.R., Ma Z.H., Zhang X., Kishimoto T., Kohyama N.
Title Lung disorders of workers exposed to rush smear dust in China
Bibliographic information Oct. 2006, Vol.44, No.4, p.556-563. Illus. 15 ref.
Internet access http://www.jniosh.go.jp/old/niih/en/indu_hel/2006/pdf/indhealth_44_4_556.pdf [in English]
Abstract A growing proportion of tatami mats are produced in the Zhejiang province of China for export to Japan. The mats are made from rush. One of the production steps requires smearing the freshly-cut rush with clay to prevent colour fading and increase strength. During subsequent steps, workers are heavily exposed to clay dust which contains 20-30% free silica and is therefore a potential cause of pneumoconiosis. To evaluate lung disorders among workers exposed to this dust, a cross-sectional study was carried out on 1709 workers (788 men, 921 women) in 80 factories. Data were collected by means of questionnaires, medical examinations including a chest X-ray and lung function tests and total and respirable dust measurements. Tatami mat workers were found to be at high risk for pneumoconiosis, with a dose-response relationship between dust levels and the prevalence of pneumoconiosis. A similar relationship between the prevalence of cough and sputum and the length of employment was found for non-smoking workers but not for smoking workers. Other findings are discussed.
Descriptors (primary) China; airborne dust; wicker goods industry; respiratory diseases; risk factors; mineral dust
Descriptors (secondary) silica; smoking; pneumoconiosis; respirable dust; exposure evaluation; questionnaire survey; chest radiography; breathing atmosphere; respiratory function tests; dose-response relationship; determination in air; medical examinations; cross-sectional study
Document type D - Periodical articles
Country / State or ProvinceChina; Japan
Subject(s) Textile and clothing industries
Broad subject area(s) Chemical safety
Occupational medicine, epidemiology
Browse category(ies) Diseases of the respiratory system (except for pneumoconiosis & similar)
Woodworking industry
Lumber and the woodworking industry