日本职业接触(推荐)限值(2002～2003)(续前)

化学物质职业接触限值四乙氧基硅烷Tetraethoxysilane(78·10—4)四乙基船(皮)(以铅计)Tetraethyllead(as Pb)(78-00-2)四氢呋啸Tetrahydrofuran 009—99-9)四甲氧基乙硅烷Tetramethoxysilaoe(681—84一却甲苯(皮)Toluene(108·88-3)甲苯二异氰酸酯类Toluene diisocyanates邻甲苯胺(皮)0一Toluidine(95—53.4)1.I.2-三氰一1.2.2一三氟乙烷I.1.2一Trichloro—1.2.2一trifluoroethane(76—13-1)l,1.1一三氰乙烷1,1,I—Trichloroethane(71-55.6)1.1.2·三氯乙烷(皮) l。l,2-Trichloroethane(79-00-鄄三氯乙烯Trinhloroethylene(79一Ol一…     

我国化学物质职业接触限值研究规范与建议

本文在研究国内外职业接触限值的内涵基础上,详述了化学物质职业接触限值的制定规范,指出我国化学物质职业接触限值尚未解决的问题,并建议下一步制修订工作中要明确提出接触限值依据的关键效应和保护水平,应正确理解超限倍数概念,尽快制定职业接触限值的非常规工作制下的调整指南,阐明联合作用及其应用等,以其为今后化学物质职业接触限值的制修订的提供借鉴。     

日本职业卫生学会提出2009年至2010版职业接触限值

日本职业卫生杂志[J Occup Health,2009,51（5）：454-470]发表了日本职业卫生学会推荐的职业接触限值（2009～2010）全文。职业接触限值（OEL）涉及化学物、噪声、高温、低温、振动、电场、磁场及电磁场、紫外辐射,是预防工人因接触上述因素引起健康损害的参考数值。     

043我国职业接触限值的研究进展

职业接触限值是制订职业卫生标准的基础。本文介绍了我国职业接触限值的发展历史、研究情况,并与国外部分国家的限量标准进行比较,为今后制定我国工作场所有害物质的职业接触限值提供一定的参考。     

我国职业接触限值的研究进展

职业接触限值是制订职业卫生标准的基础。本文介绍了我国职业接触限值的发展历史、研究情况,并与国外部分国家的限量标准进行比较,为今后制定我国工作场所有害物质的职业接触限值提供一定的参考。     

职业接触二硫化碳生物接触限值的探讨

目的 探讨我国职业接触二硫化碳(CS2)的生物接触限值.方法 用高效液相色谱法测定工人班末尿中2-硫代噻唑烷-4-羧酸(TTCA)含量,用气相色谱法测定接触CS2工人作业场所空气中CS2浓度,探讨二者的相关关系,比较生物接触限值和PC-TWA判定结果.结果 CS2作业工人班末尿中TTCA含量与其接触的工作场所空气中CS2浓度呈正相关,回归方程式Y=0.265X-0.165 (r=0.91,P＜0.01).基于本次研究的回归方程,根据GBZ 2.1-2007《工作场所有害因素职业接触限值第1部分:化学有害因素》规定的CS2的PC-TWA 5 mg/m3推算,CS2接触工人班末尿中TTCA浓度生物限值为1.2 mgTTCA/g Cr.结论 建议我国CS2生物接触限值修订为1.2 mg TTCA/g Cr.     

过氧化甲乙酮毒性及职业接触限值研究进展

过氧化甲乙酮(MEKP)是世界上应用最为广泛的不饱和聚酯树脂固化剂,职业和非职业接触人数逐年增多,不断出现中毒的个案报道,目前我国尚未制定MEKP职业接触限值.该文就过氧化甲乙酮的毒性以及国外对其职业接触限值的研究情况作一简要综述,为制定过氧化甲乙酮的职业接触限值提供参考.     

Statistical modelling of formaldehyde occupational exposure levels in French industries, 1986-2003

Occupational exposure databanks (OEDBs) have been cited as sources of exposure data for exposure surveillance and exposure assessment in epidemiology. In 2003, an extract was made from COLCHIC, the French national OEDB, of all concentrations of formaldehyde. The data were analysed with extended linear mixed-effects models in order to identify influent variables and elaborate a multi-sector picture of formaldehyde exposures. Respectively, 1401 and 1448 personal and area concentrations were available for the analysis. The fixed effects of the personal and area models explained, respectively, 57 and 53% of the total variance. Personal concentrations were related to the sampling duration (short-term higher than TWA levels), decreased with the year of sampling (-9% per year) and were higher when local exhaust ventilation was present. Personal levels taken during planned visits and for occupational illness notification purpose were consistently lower than those taken during ventilation modification programmes or because the hygienist suspected the presence of significant risk or exposure. Area concentrations were related to the sampling duration (short-term higher than TWA levels), and decreased with the year of sampling (-7% per year) and when the measurement sampling flow increased. Significant within-facility (correlation coefficient 0.4-0.5) and within-sampling campaign correlation (correlation coefficient 0.8) was found for both area and personal data. The industry/task classification appeared to have the greatest influence on exposure variability while the sample duration and the sampling flow were significant in some cases. Estimates made from the models for year 2002 showed elevated formaldehyde exposure in the fields of anatomopathological and biological analyses, operation of gluing machinery in the wood industry, operation and monitoring of mixers in the pharmaceutical industry, and garages and warehouses in urban transit authorities.