Abstract:
OBJECTIVES:To investigate the sources of high concentrations of particles of < 10 microns diameter (PM10) in classrooms, observed in a previous study on childhood exposure to PM10, and to study the correlation between classroom and outdoor concentrations of mass and elements of PM10. METHODS:Measurements of PM10 were conducted in two schools and outdoors in Amsterdam, the Netherlands. Averaging time was 24 hours for the outdoor measurements and both 8 hours (school time) and 24 hours for the classroom measurements. Analysis by x ray fluorescence was used to measure the elemental composition of 55 samples from the 11 days when measurements were conducted simultaneously in both classrooms and outdoors. RESULTS:For most elements, classroom concentrations were considerably higher than outdoor concentrations, especially during school hours. The highest classroom/outdoor ratios were found for the elements from soils Si, Ca, and Ti. The only measured elements that were not increased were S, Br, Pb, and Cl, which are dominated by non-crustal sources. For S, Br, and Pb, which are generally associated with particles < 1 micron, significant correlations between classroom and outdoor concentrations and between the two classrooms were found. The other elements generally had low correlations. CONCLUSIONS:The results show that the high PM10 concentrations found in our classrooms are probably due to resuspension of coarse particles or suspension of soil material. Due to these excess coarse particles, the correlation between classroom and outdoor concentrations is lower for elements associated with coarse particles than for elements associated with fine particles. As the general composition of PM10 in classrooms differs from the composition of PM10 in ambient air, the high PM10 mass concentrations in classrooms can probably not be directly compared with ambient air quality guidelines.
journal_name
Occup Environ Medjournal_title
Occupational and environmental medicineauthors
Janssen NA,Hoek G,Brunekreef B,Harssema Hdoi
10.1136/oem.56.7.482subject
Has Abstractpub_date
1999-07-01 00:00:00pages
482-7issue
7eissn
1351-0711issn
1470-7926journal_volume
56pub_type
杂志文章abstract:OBJECTIVES:To investigate further whether inorganic lead is a carcinogen among adults, or associated with increased blood pressure and kidney damage, via a large mortality study. METHODS:We conducted internal analyses via Cox regression of mortality in three cohorts of lead-exposed workers with blood lead (BL) data (U...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oemed-2017-104311
更新日期:2017-11-01 00:00:00
abstract::: Physically demanding occupations (ie, military, firefighter, law enforcement) often use fitness tests for job selection or retention. Despite numerous individual studies, the relationship of these tests to job performance is not always clear. : This review examined the relationship by aggregating previously reported...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章,meta分析,评审
doi:10.1136/oemed-2016-103684
更新日期:2017-02-01 00:00:00
abstract:OBJECTIVES:Epidemiological studies have shown inconsistent effects on immunological parameters in subjects exposed to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). In this study we investigated changes in humoral immunity and prevalence of atopic diseases among workers from a Dutch historical cohort occupationally expose...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oem.2010.058016
更新日期:2011-06-01 00:00:00
abstract:OBJECTIVES:Both ambient ozone and temperature are associated with human health. However, few data are available on whether ozone modifies temperature effects. This study aims to explore whether ozone modified associations between maximum temperature and cardiovascular mortality in the USA. METHODS:The authors obtained...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oem.2007.033878
更新日期:2008-04-01 00:00:00
abstract:AIMS:To determine the cancer incidence in Swedish cabin crew. METHODS:Cancer incidence of cabin crew at the Swedish Scandinavian Airline System (SAS) (2324 women and 632 men) employed from 1957 to 1994 was determined during 1961-96 from the Swedish National Cancer Register. The cancer incidence in cabin crew was compa...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oem.60.11.810
更新日期:2003-11-01 00:00:00
abstract:OBJECTIVES:To study the exposure of Parisian taxi drivers to automobile air pollutants during their professional activity. METHODS:A cross sectional study was carried out from 27 January to 27 March 1997, with measurements performed in the vehicles of 29 randomly selected drivers. Carbon monoxide (CO) content was meas...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oem.57.6.406
更新日期:2000-06-01 00:00:00
abstract:OBJECTIVES:Assessment of level of exposure to platinum and platinum concentration in urine from platinum industry workers to evaluate internal exposures and excretion kinetics. METHODS:Platinum concentrations in urine samples from 34 workers were measured by adsorptive voltammetry after UV-photolysis. Morning and even...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oem.55.2.138
更新日期:1998-02-01 00:00:00
abstract:OBJECTIVES:Reliable retrospective exposure assessment continues to be a challenge in most population-based studies. Several methodologies exist for estimating exposures retrospectively, of which case-by-case expert assessment and job-exposure matrices (JEMs) are commonly used. This study evaluated the reliability of ex...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oemed-2011-100556
更新日期:2012-10-01 00:00:00
abstract:OBJECTIVES:To appraise epidemiological evidence of the purported association between residential exposure to power frequency magnetic fields and adult cancers. METHODS:Literature review and epidemiological evaluation. RESULTS:Seven epidemiological studies have been conducted on the risk of cancer among adults in rela...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章,评审
doi:10.1136/oem.53.8.505
更新日期:1996-08-01 00:00:00
abstract:AIMS:To assess potential alterations of the nasal mucosa by clinical and histopathological evaluation of workers exposed to sulphuric acid mists at anodising plants, correlating the findings with duration of exposure and sulphuric acid concentrations in the air, and comparing them with a control group. METHODS:Fifty t...
journal_title:Occupational and environmental medicine
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1136/oem.60.6.395
更新日期:2003-06-01 00:00:00
abstract:OBJECTIVES:To investigate whether there is a relationship between fatigue and sickness absence. Two additional hypotheses were based on the theoretical distinction between involuntary, health related absence and voluntary, attitudinal absence. In the literature, the former term is usually used to describe long term sic...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章,多中心研究
doi:10.1136/oem.60.suppl_1.i71
更新日期:2003-06-01 00:00:00
abstract:OBJECTIVES:To determine whether employees in the automobile industry in Michigan are at elevated risk of urinary bladder cancer. METHODS:The authors conducted a population-based case-control study including 418 cases and 571 controls. History of employment within the automobile industry was coded according to the US C...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oem.2008.041616
更新日期:2009-10-01 00:00:00
abstract:OBJECTIVES:Meatpacking remains a hazardous and largely unexamined industry. Despite prevention efforts, laceration injuries, among others, remain high. We estimated the magnitude of associations between transient exposures such as equipment malfunction, performing an unusual work task, rushing, and occurrence of lacera...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oem.2009.048611
更新日期:2010-10-01 00:00:00
abstract:OBJECTIVES:To explore the significance of the increase in urinary excretion of the lysosomal enzyme beta-N-acetylglucosaminidase (NAG) at low exposures to cadmium (Cd) that is frequently found in the absence of any other sign of renal dysfunction. METHODS:The activity was measured of the two main isoenzymes of NAG (NA...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oem.52.3.177
更新日期:1995-03-01 00:00:00
abstract:BACKGROUND:Assessment of exposure assessment to metal working fluids (MWF) has almost exclusively focused on inhalation exposure. AIMS:To assess levels of, and factors affecting, dermal and inhalation exposure to semi-synthetic MWF, and to identify suitable dermal exposure grouping schemes among metal workers for an e...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oem.2004.015396
更新日期:2005-09-01 00:00:00
abstract:OBJECTIVES:To obtain knowledge on male reproductive toxicity of inorganic lead at current European exposure levels and to establish lowest adverse effect levels, if any. METHODS:A cross sectional survey of the semen of 503 men employed by 10 companies was conducted in the United Kingdom, Italy, and Belgium. The mean b...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章,多中心研究
doi:10.1136/oem.59.4.234
更新日期:2002-04-01 00:00:00
abstract:OBJECTIVES:Long working hours may be associated with cardiovascular disease (CVD). The objective was to investigate cross-sectional associations of work hours with carotid intima-media thickness (CIMT) and ankle-brachial index (ABI). METHODS:Participants were 1694 women and 1868 men from the Multi-Ethnic Study of Athe...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oemed-2012-100665
更新日期:2012-10-01 00:00:00
abstract:BACKGROUND:Observational studies suggest that shift work may be associated with diabetes mellitus (DM). However, the results are inconsistent. No systematic reviews have applied quantitative techniques to compute summary risk estimates. OBJECTIVES:To conduct a meta-analysis of observational studies assessing the assoc...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章,meta分析,评审
doi:10.1136/oemed-2014-102150
更新日期:2015-01-01 00:00:00
abstract:OBJECTIVE:To determine the current prevalence of exposure to workplace noise and ototoxic chemicals, including co-exposures. METHOD:A cross-sectional telephone survey of nearly 5000 Australian workers was conducted using the web-based application, OccIDEAS. Participants were asked about workplace tasks they performed ...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oemed-2018-105471
更新日期:2019-05-01 00:00:00
abstract::Lymphohaematopoeitic cancer mortality was examined among 4417 workers at a chemical plant by cumulative and peak benzene exposure. There was little evidence of increasing risk with increasing cumulative exposure for all leukaemias or acute non-lymphocytic leukaemias (ANL), or the other lymphohaematopoeitic cancers wit...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oem.60.9.676
更新日期:2003-09-01 00:00:00
abstract:BACKGROUND AND AIMS:Work related asthma (WRA) is one of the most frequently reported occupational lung diseases in a number of industrialised countries. A better understanding of work aggravated asthma (WAA), as well as work related new onset asthma (NOA), is needed to aid in prevention efforts. METHODS:WAA and NOA in...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oem.2003.008177
更新日期:2004-06-01 00:00:00
abstract:OBJECTIVE:Occupational exposure to agents in plastics and rubber manufacturing has been associated with elevated risk of certain cancers. We sought to evaluate cancer risk among workers employed in occupations and industries with these exposures as part of an ongoing surveillance programme in Ontario, Canada. METHODS:...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oemed-2020-106581
更新日期:2020-12-01 00:00:00
abstract::Mortality data have been updated for a further 12 years for a cohort of workers in the reinforced plastics and composites industry with exposures to styrene monomer and other chemicals. The cohort consisted of 15,826 male and female employees who were exposed to styrene for at least six months between 1948 and 1977 at...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oem.51.6.386
更新日期:1994-06-01 00:00:00
abstract:OBJECTIVES:Night shift work has been classified as a probable human carcinogen by the International Agency for Research on Cancer, based on experimental studies and limited evidence on human breast cancer risk. Evidence at other cancer sites is scarce. We evaluated the association between night shift work and stomach c...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oemed-2016-103597
更新日期:2016-08-01 00:00:00
abstract:OBJECTIVES:To assess if improvement of working conditions related to heat stress was associated with improved kidney health outcomes among sugarcane harvest workers in Chichigalpa, Nicaragua, a region heavily affected by the epidemic of chronic kidney disease of non-traditional origin. METHODS:Based on our findings du...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oemed-2020-106406
更新日期:2020-08-01 00:00:00
abstract::Community based case-control studies are an efficient means to study disease aetiologies, and may be the only practical means to investigate rare diseases. However, exposure assessment remains problematic. We review the literature on the validity and reliability of common case-control exposure assessment methods: occu...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章,评审
doi:10.1136/oem.59.9.575
更新日期:2002-09-01 00:00:00
abstract:OBJECTIVES:To examine the relation between exposure to acid anhydrides and the risk of developing immediate skin prick test responses to acid anhydride human serum albumin (AA-HSA) conjugates or work related respiratory symptoms; to assess whether these relations are modified by atopy or smoking. METHODS:A cohort of 5...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oem.55.10.684
更新日期:1998-10-01 00:00:00
abstract:OBJECTIVES:To investigate the relation between shift work and death from ischaemic heart disease (IHD). METHODS:A nested case-control approach was used. The cohort comprised male manual workers who joined an industrial company aged 50 years or under between 1 January 1950 and 31 December 1992 and worked there for at l...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oem.53.6.367
更新日期:1996-06-01 00:00:00
abstract:OBJECTIVES:Standardised mortality ratios (SMRs) play an important role in the epidemiological literature, particularly in evaluations of occupational hazards. While some authors have argued that comparisons of SMRs should be avoided, many investigators find such analyses appealing particularly when data are sparse. For...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oemed-2012-100792
更新日期:2013-02-01 00:00:00
abstract:OBJECTIVE:The aim was to test if targeting managers with an educational intervention reduces absence among pregnant employees. METHODS:The study was a non-blinded cluster randomised trial conducted in hospitals and daycare institutions from two administrative Danish Regions and two Danish municipalities. Clusters (wor...
journal_title:Occupational and environmental medicine
pub_type: 杂志文章
doi:10.1136/oemed-2020-106794
更新日期:2021-01-12 00:00:00