Lung function in retired coke oven plant workers.

Lung function was studied in 354 coke oven plant workers in the Lorraine collieries (Houillères du Bassin de Lorraine, France) who retired between 1963 and 1982 and were still alive on 1 January 1988. A spirometric examination was performed on 68.4% of them in the occupational health service. Occupational exposure to respiratory hazards throughout their career was retraced for each subject. No adverse effect of occupational exposure on ventilatory function was found. Ventilatory function was, however negatively linked with smoking and with the presence of a respiratory symptom or discrete abnormalities visible on pulmonary x ray films. The functional values were mostly slightly lower than predicted values and the most reduced index was the mean expiratory flow, FEF25-75%. The decrease in forced expiratory volume in one second (FEV1) was often parallel to that in forced vital capacity (FVC), but it was more pronounced for subjects who had worked underground, for smokers of more than 30 pack-years, and for subjects having a respiratory symptom. Pulmonary function indices were probably overestimated because of the exclusion of deceased subjects and the bias of the participants.     

Lung function in retired coke oven plant workers.

Lung function was studied in 354 coke oven plant workers in the Lorraine collieries (Houillères du Bassin de Lorraine, France) who retired between 1963 and 1982 and were still alive on 1 January 1988. A spirometric examination was performed on 68.4% of them in the occupational health service. Occupational exposure to respiratory hazards throughout their career was retraced for each subject. No adverse effect of occupational exposure on ventilatory function was found. Ventilatory function was, however negatively linked with smoking and with the presence of a respiratory symptom or discrete abnormalities visible on pulmonary x ray films. The functional values were mostly slightly lower than predicted values and the most reduced index was the mean expiratory flow, FEF25-75%. The decrease in forced expiratory volume in one second (FEV1) was often parallel to that in forced vital capacity (FVC), but it was more pronounced for subjects who had worked underground, for smokers of more than 30 pack-years, and for subjects having a respiratory symptom. Pulmonary function indices were probably overestimated because of the exclusion of deceased subjects and the bias of the participants.     

焦炉工血中脂质过氧化水平与神经行为变化的关系

目的探讨焦炉工体内脂质过氧化水平及其与神经行为的变化。方法将134名焦炉工分为炉底组35名、炉侧组49名、炉顶组50名,以36名原材料处工人为对照组进行神经行为功能测试,并检测血中总超氧化物歧化酶(T-SOD)活力,谷胱甘肽(GSH)、丙二醛(MDA)含量。结果焦炉工血中T-SOD活力和GSH含量均明显低于对照组,差异有统计学意义(P<0.01),疲惫-惰性、紧张-焦虑、忧郁-沮丧、有力-好动、数字跨度等指标明显低于对照组,差异有统计学意义(P<0.05);而MDA含量明显高于对照组,差异有统计学意义(P<0.01);相关分析表明,神经行为改变与脂质过氧化指标间有相关关系,但相关系数均小于0.25,相关关系较弱。结论焦炉工体内脂质过氧化水平升高,并与其神经行为改变共存。     

焦炉作业工人神经行为功能改变的特征分析

目的 通过苯并(a)芘[B(a)P]职业接触人群调查,探讨多环芳烃所致神经行为功能改变.方法 选择某钢铁公司焦化厂健康成年男性工人200名作为接触组,以该公司的原材料处和自动化处一般情况相近的88名工人作为对照组.高效液相色谱法测定作业环境空气中B(a)P,收集调查对象的班后尿,用高效液相色谱法检测尿中1-羟基芘的水平;用WHO推荐的神经行为核心测试组合(NCTB)检测研究对象的神经行为功能.结果 作业环境空气中炉底、炉侧、炉顶的B(a)P浓度分别为0.0195、0.186、1.624 μg/m3,炉侧、炉顶的B(a)P浓度超过职业卫生标准(0.15 μg/m3)0.24倍和9.83倍.与对照组相比,焦炉工尿1-羟基芘的水平[(3.42±0.98)μmol/mol肌酐]高于对照组[(2.75±1.09)μmol/mol肌酐](t=-5.162,P=0.000),接触组与对照组在年龄、工龄、吸烟、饮酒及吃烧烤食物情况间均衡,文化水平不均衡,以文化水平为协变量进行协方差分析,焦炉工在总数字跨度、数字跨度顺序、2次打点正确数得分低于对照组,2次打点总数得分高于对照组,差异有统计学意义,按照尿1-羟基芘浓度对数值的30和70百分位数将研究对象分为3组(＜3.10 μmol/mol肌酐,3.10 μmoL/mol肌酐～,＞3.87 μmoL/mol肌酐),总数字跨度、数字跨度顺序、数字跨度倒序、习惯用手、数字译码、视觉记忆得分显示出随尿1-羟基芘浓度增高而降低的趋势;多元线性回归和偏相关分析表明,尿1-羟基芘浓度影响总数字跨度、数字跨度顺序、数字跨度倒序、数字译码和视觉记忆得分,而且与上述指标存在负相关,偏相关系数分别为-0.309、-0.284、-0.209、-0.158、-0.144.结论 多环芳烃主要引起接触人群感知、记忆功能改变.     

焦炉逸散物暴露对焦炉工人肺功能影响的队列研究

目的 通过对比研究同一批焦炉工人焦炉逸散物暴露5年前后肺通气功能的损伤情况,进一步探讨焦炉逸散物与焦炉工人肺通气功能损伤的关系.方法 选取山西某焦化厂焦炉作业工人165人(暴露组)和辅助工人52人(对照组)为研究对象,使用统一调查表收集工人个人信息.定点定期采集工作场所中空气样本,高压液相色谱仪测定空气样本中苯并(a)芘浓度.分别于2009和2013年使用便携式肺功能仪测定研究对象肺通气功能,并进行对比分析.结果 2009至2013年同一区域B(a)P浓度的差异无计学意意义(P＞0.05).与2009年比较,2013年对照组工人各肺功能测定值及异常率差异无统计学意义(P＞0.05),而暴露组工人用力肺活量(FVC％)、第1秒用力呼气容积(FEV10％)、最大通气量(MVV％)、肺活量(VC％)、25％肺活量时呼气流速(FEF.％)均显著降低,FVC％、FEV10％和VC％异常率显著升高,差异有统计学意义(P＜0.05).新出现肺功能异常的工人主要分布在炉顶和炉侧,炉顶组FVC％、FEV1.0％、VC％新增异常人数(率)明显高于对照组和炉底组,炉侧组明显高于对照组,差异有统计学意义(P＜0.05).多因素logistic回归分析结果显示,继续暴露5年后,炉顶作业工人FVC％、FEV1.0％和VC％新出现肺功能异常的调整OR分别为7.939、5.966和4.956;接焦工龄为暴露组工人FVC％、FEV1.0％、MVV％、VC％异常的危险因素.接焦工龄与炉顶作业存在正向交互作用,差异有统计学意义(P＜0.05).结论 焦炉工人肺功能损伤与焦炉逸散物暴露有关,焦炉逸散物暴露水平和暴露时间是焦炉工人肺功能损伤的主要影响因素,二者存在正交互作崩.     

焦化厂工人尿中多环芳烃代谢物与神经行为功能改变的关系

目的  探讨某焦化厂工人尿中多环芳烃(polycyclic aromatic hydrocarbons, PAHs)代谢物与神经行为功能改变的关系。方法 2017年对山西省某焦化厂的672名工人进行基本情况调查、神经行为功能测试和尿中多环芳烃羟基代谢物(polycyclic aromatic hydrocarbons hydroxyl metabolites, OH-PAHs)的检测;于2021年进行随访,共461名工人完成神经行为功能测试。采用WHO推荐的神经行为测试组合(neurobehavioral core test battery, NCTB)对工人神经行为功能进行测试;使用高效液相色谱-串联质谱联用(high performance liquid chromatography with tandem mass spectrometry, HPLC-MS/MS)检测尿中OH-PAHs和尿中可替宁。使用广义线性模型和广义估计方程分析工人尿中OH-PAHs与神经行为功能的关系。结果  研究对象基线年龄为34(30, 46)岁,男性占比69.2%。纵向研究中,2-羟基萘(2-hydroxynaphthalene, 2-OHNAP)高暴露组的顺序数字跨度(β=-0.50, 95% CI: -0.81~-0.18, P=0.002)和总数字跨度得分(β=-0.77, 95% CI: -1.38~-0.16, P=0.014)降低;2-羟基芴(2-hydroxyfluorene, 2-OHFLU)高暴露组的平均反应时间明显延长(β=26.90, 95% CI: 7.86~45.93, P=0.006),习惯手提转捷度(β=-1.30, 95% CI: -2.43~-0.17, P=0.024)和非习惯手提转捷度得分(β=-1.19, 95% CI: -2.23~-0.15, P=0.025)降低。结论  长期暴露于高浓度多环芳烃环境中会导致焦化厂工人神经行为功能降低。     

焦炉逸散物对职业接触者神经功能和神经递质水平的影响

目的通过职业流行病学调查评价焦炉逸散物(多环芳烃类化合物)对职业接触人群神经功能和神经递质水平的影响。方法选择100名某钢铁公司焦化厂健康成年男性焦炉作业工人作为接触组,100名氧气厂健康成年男性工人作为对照组,平衡相关影响因素后通过问卷调查收集人群职业接触的基本信息及自觉症状等。采用高效液相色谱-电化学检测法测定研究对象血浆中多巴胺(DA)、肾上腺素(AD)、去甲肾上腺素(NE)和五羟色胺(5-HT)的水平。结果接触组研究对象出现打喷嚏、嗓子痛、咳嗽、食欲不好、皮疹的比例高于对照组,差异有统计学意义(P0.05);接触组研究对象在过去1年中出现轻、中、重度集中精力或记忆困难的总比例高于对照组,差异有统计学意义(P0.05)。接触组研究对象血浆中的NE,DA,5-HT水平明显高于对照组,差异有统计学意义(P0.05);2组研究对象血浆中的AD水平比较,差异无统计学意义(P0.05)。结论含多环芳烃类化合物的焦炉逸散物可对接触人群的神经功能和血浆中的神经递质水平产生影响。     

焦炉作业多环芳烃暴露工人诱发电位检测

目的 检测多环芳烃暴露人群诱发电位的变化情况。方法 按炉顶、炉侧、炉底不同作业岗位各随机选取15名焦炉工为暴露组,另选一般情况相近的25名库工为对照组。高效液相色谱法检测研究对象尿中1-羟基芘水平;Neuropack M1肌电图仪进行体感诱发电位(SEP)、听觉诱发电位(AEP)和视觉诱发电位(VEP)的测定。结果 尿中1-羟基芘对照组、炉底组、炉侧组、炉顶组分别为(2.71±0.22),(3.29±0.38),(3.63±0.55),(4.13±0.62)μmol/mol Cr,呈现炉顶>炉侧>炉底>对照的趋势;各组体感诱发电位、听觉诱发电位和视觉诱发电位各指标经方差分析,差异无统计学意义(P<0.05)。结论 在目前的接触水平下,多环芳烃暴露人群躯体感觉传导通路、听觉传导通路和视觉传导通路未发生明显异常。     

焦炉作业工人血液检测指标分析

对焦炉作业工人血液检测 ,发现血红蛋白含量、白细胞计数显著高于对照组 (P <0 0 1) ,炉顶工和机侧工外周血淋巴细胞微核率明显增高 (P <0 0 5 )。     

Mortality in retired coke oven plant workers.

A previous study on 536 retired coke oven plant workers in Lorraine Collieries (France) reported an excess of deaths from lung cancer (standardised mortality ratio (SMR) = 251) compared with the French male population. Occupational exposures during working life were retraced for each subject, but the number of deaths during the observation period (1963-82) was small, and smoking habits were known only for dead subjects. In 1988, the cohort was re-examined (182 deaths occurred between 1963 and 1987) and smoking habits were determined for all the subjects. This study confirmed the excess of lung cancer (SMR = 238, p < 0.001). It showed an excess of mortality from all causes (SMR = 141, p < 0.001), overall cancers (SMR = 133, p < 0.05), and cardiovascular diseases (SMR = 133, p < 0.05). A significant excess of deaths was found for subjects who worked near the ovens for all causes (145, p < 0.01), lung cancer (SMR = 252, p < 0.01), colon cancer (SMR = 381, p < 0.05), and cardiovascular diseases (SMR = 155, p < 0.05). A significant excess mortality was also found from all causes (176, p < 0.05) and stomach cancer (SMR = 538, p < 0.01) in subjects who worked in byproducts, from lung cancer (SMR = 433, p < 0.001) in those in the workshops, and from cirrhosis of the liver and alcoholism (SMR = 360, p < 0.01) in those underground; but, due to small numbers, these figures were not robust. An excess of mortality from all causes (SMR = 163, p<001), lung cancer (SMR = 228, p<0.05) and cardiovascular diseases (SMR = 179, p<0.01) was shown also for non-exposed or slightly exposed subjects. The fact that, on the whole, mortality of various exposed groups was similar to that of non-exposed or slightly exposed workers may be explained in part by the selection at hiring and the healthy worker effect. As an increased risk of lung cancer was noted among subjects who worked in the old generations of plant compared with the other workers (although the relative risk was not significant) it is concluded that the role of occupational hazards could not be excluded.     

Urinary 1-hydroxypyrene concentrations in coke oven workers

OBJECTIVES: To investigate the relation of individual occupational exposure to total particulates benzene soluble fraction (BSF) of ambient air with urinary 1-hydroxypyrene (1-OHP) concentrations among coke oven workers in Taiwan. METHODS: 80 coke oven workers and 50 referents were monitored individually for the BSF of breathing zone air over three consecutive days. Exposures were categorised as high, medium, or low among coke oven workers based on exposure situations. The high exposure group (n = 18) worked over the oven. The medium and low exposure groups (n = 41 and n = 21) worked at the side of the oven for > 4 hours and < 4 hours a day, respectively. Urine was collected before the shift on the morning of day 1 and after the shift on the afternoon of day 3 to find the change of 1-OHP concentrations across the shift. RESULTS: The median (range) changes of urinary 1-OHP concentrations across the shift for various exposure situations (microgram/g creatinine) were as follows: high 182 (7 to 3168); medium 9 (-8 to 511); low 7 (-6 to 28); and referents 0.2 (-2 to 72). This change of urinary 1-OHP was highly associated with individual occupational exposure to the BSF in air (r = 0.74 and 0.64, p < 0.001). The regression model showed significant effects of individual exposures to the BSF and alcohol consumption on urinary postshift 1-OHP after adjusting for preshift 1-OHP in the total population (n = 130). More exposure to the BSF led to higher postshift 1-OHP (p < 0.001); current drinkers of > 120 g/week had lower urinary postshift 1-OHP than never and former drinkers (p = 0.01). A 10-fold increase in the average BSF in air resulted in about a 2.5-fold increase in postshift 1-OHP among the 80 coke oven workers. CONCLUSION: Urinary 1-OHP concentrations can be used as a good biomarker to assess individual exposure to the BSF in air. Alcohol drinking may modify the toxicokinetic pathway of the BSF; the effects of alcohol should be investigated further in occupational studies.

 

     

Morbidity in retired coke oven plant workers.

The effect of past occupational exposure on morbidity was studied in 354 coke oven workers in Lorraine Collieries (France) who retired between 1963 and 1982, and were still alive in 1988; 96% of them participated in this study. Occupational exposure to respiratory hazards during the working life was retraced for each subject. No significant association between the occupational exposure and the frequency of ischemic cardiopathies, arterial hypertension, gastro-duodenal ulcers, and respiratory symptoms was revealed. However, subjects who had worked on the Ovens, in the Workshops, and in the Byproducts showed a prevalence of arterial hypertension significantly higher than the non- or slightly exposed subjects. The healthy worker effect phenomenon, the exclusion of deceased subjects, and the small size of this retiree population may conceal possible differences between exposure groups.     

焦化作业工人淋巴细胞HSP70表达及作用

目的探讨热应激蛋白70（HSP70）在焦炉工人外周血淋巴细胞的表达水平及其意义。方法用微核试验和碱性单细胞凝胶电泳技术（彗星试验）检测淋巴细胞的染色体畸变和DNA损伤情况，用蛋白印迹（westem blot）法检测淋巴细胞HSP70表达水平。结果外周血淋巴细胞微核率和彗星尾长在高暴露组显著高于对照组，差异有统计学意义（P〈0．05）；HSP70的表达水平在高暴露组、低暴露组和对照组分别为1．12±0．36。1．34±0．83。0．89±0．40，低暴露组明显高于对照组（P〈0．05）；高暴露组工人的外周血淋巴细胞HSP70的表达水平与彗星尾长呈负相关（r=-0．416，P=0．03）。结论焦炉作业环境可诱发外周血淋巴细胞HSP70蛋白表达，较高水平HSP70的表达对细胞DNA损伤具有保护作用。     

焦炉工外周血淋巴细胞遗传物质损伤水平的研究

目的　评价焦炉作业环境接触多环芳烃对焦炉工外周血淋巴细胞遗传物质的损伤。方法　应用彗星试验和外周血淋巴细胞胞质分裂阻滞微核检测法 ,评价 13 7名焦炉工和 50名非职业多环芳烃暴露对照人群外周血淋巴细胞DNA和染色体损伤水平 ;测定其尿中 1 羟基芘水平 ,评价个体多环芳烃暴露内剂量 ;收集个人职业史、年龄、性别、吸烟和饮酒状况等信息。结果　焦炉工尿中 1 羟基芘水平为 (5.76± 1.0 4) μmol/molCr ,明显高于对照组 [(0 .70± 0 .3 2 ) μmol/molCr]。焦炉工外周血淋巴细胞微核率和彗星尾矩分别为 8.0‰ (0 .0‰～ 3 0 .0‰ )和 2 .0 9(0 .3 1～ 75.41) ,均高于对照组 [3 .5‰ (0 .0‰～13 .0‰ )、1.0 5(0 .11～ 6.63 ) ] ,差异有显著性 (P <0 .0 5)。对照组中 ,吸烟个体彗星尾矩为 1.44(0 .2 3～6.63 ) ,高于不吸烟个体 [0 .81(0 .11～ 3 .47) ] ,差异有显著性 (P <0 .0 5)。按焦炉作业工龄将 13 7名焦炉工分为 0 .5～、16.0～和 2 2 .0～ (年 ) 3组 ,校正了年龄、性别、吸烟、饮酒和尿中 1 羟基芘水平后 ,焦炉工外周血淋巴细胞彗星尾矩分别为 1.3 4 (0 .3 1～ 3 7.84)、2 .3 2 (0 .49～ 52 .97)和 3 .2 0 (0 .45～ 75.41) ,有随焦炉作业工龄增加而增加的趋势。结论　在现有多环芳烃暴露水平     

Assessment of coke oven emissions exposure among coking workers

Coking workers are regularly exposed to coke oven emissions, which consist primarily of polycyclic aromatic hydrocarbons and volatile organic compounds. This study measured the workers' exposure to the benzene soluble fraction of total particulates (BSF). The study population consisted of 88 coking workers as an exposure group and 59 referents. Personal breathing-zone samples of BSF and total particulates were taken from all study subjects for 3 consecutive days. The highest BSF concentrations were found among the topside oven workers (geometric mean; range) (microgram/m3): lidman (515; 72-18, 181), tar chaser (432; 51-4334), and larry car operator (185; 55-649). The lowest was 7 micrograms/m3 in the referents. Among the samples at the topside oven 84% exceeded the Occupational Safety and Health Administration standard (150 micrograms/m3 BSF). The percentage of BSF in total particulates varied across job classifications, ranging from 0.3% in wharfmen to 24% in tar chasers. Area sampling indicated that the BSF concentration at the topside area was sixtyfold higher than that at the administrative area, which was approximately 2 km from the coke oven plant.     

Urinary 1-hydroxypyrene levels in workers exposed to coke oven emissions at various locations in a coke oven plant

Polycyclic aromatic hydrocarbons, which are carcinogenic and mutagenic to humans, are primary compounds in coke oven emissions generated by the coking process. The authors examined the relationship between coke oven workers' urinary 1-hydroxypyrene levels and their exposure to polycyclic aromatic hydrocarbons, as determined on the basis of work category and pre- and postshift effects in a steel plant in Taiwan. Eighty-eight coke oven workers constituted the exposed group, and 61 office workers in a steel plant located 1.5 km from the coke plant constituted the control group. The benzene-soluble fraction in personal air samples, and 1-hydroxypyrene in urine samples, were measured for 3 consecutive days. The 3-day urinary 1-hydroxypyrene sampling results for topside workers (i.e., those most heavily exposed to emissions) in the coke oven group, and for the control group, as determined from postshift geometric means, were 23.8 microg/gm creatinine and 0.3 microg/gm creatinine, respectively. These values increased to 13.4 and 0.1 microg/gm creatinine, respectively, after an 8-hr work period. The major source of polycyclic aromatic hydrocarbons for the exposed group was occupational; therefore, the closer workers were to the coke oven, the greater their exposure, and, consequently, the greater their metabolite level. Urinary 1-hydroxypyrene levels of the exposed group were 80 times higher than those of the control group. Smoking had no significant effect on the excretion of urinary 1-hydroxypyrene. 1-hydroxypyrene levels in the workers' urine during an 8-day period was cumulative (half-life = 18.6 hr). The authors concluded that it would be desirable to switch highly exposed workers to a low-exposure work area, after a period of rest. In addition, urinary 1-hydroxypyrene was a confirmed, useful biological indicator for exposure to polycyclic aromatic hydrocarbons.     

Assessment of the effectiveness of respirator usage in coke oven workers

This program protection factor study was conducted to evaluate the effectiveness of filter cartridge respirators while coke oven workers performed their normal work. Benzene soluble fraction (BSF) of total particulate concentrations was measured inside and outside the respirators of nine coke oven workers who worked on the top of the battery of one older coke oven plant and who reported regular use of respirators. The measurements were taken for 3 consecutive days. Excluding two undetectable measurements inside the respirator, it was found that the outside respirator BSF concentrations (25 sets) ranged from 87 to 807 microg/m3, whereas the inside respirator BSF concentrations ranged from 16 to 509 microg/m3. A program protection factor (PPF) for each set of observations was calculated as the ratio of outside to inside air BSF concentrations. The mean PPF was 2.5 with a range of 1.1 to 9.6, and 12 of the 25 measurements (48%) were below 2.0. Although the workers claimed they regularly wore their respirators, the wide range and the low PPF findings suggest that worker behavior and respirator fit may influence the level of protection provided by the respirator.     

Estimation of individual dermal and respiratory uptake of polycyclic aromatic hydrocarbons in 12 coke oven workers.

Twelve workers from a coke plant in The Netherlands participated in an intensive skin monitoring programme combined with personal air sampling and biological monitoring during five consecutive eight hour workshifts. The purpose of the study was to make a quantitative assessment of both the dermal and respiratory intake of polycyclic aromatic hydrocarbons (PAHs). Pyrene was used as a marker compound for both dermal and respiratory exposure to PAHs. The biological measure for the internal exposure to PAHs was urinary 1-OH-pyrene concentration. Measurements on exposure pads at six skin sites showed that mean total skin contamination of the 12 workers ranged between 21 and 166 micrograms pyrene a day. The dermal uptake of pyrene ranged between 4 and 34 micrograms/day, which was about 20% of the pyrene contamination on skin. The mean concentration of total pyrene in the breathing zone air of the 12 coke oven workers ranged from 0.1 to 5.4 micrograms/m3. The mean respiratory uptake of pyrene varied between 0.5 and 32.2 micrograms/day. Based on the estimates of the dermal and respiratory pyrene uptake it is concluded that an average 75% (range 28%-95%, n = 12) of the total absorbed amount of pyrene enters the body through the skin. Because of the difference in the pyrene:benzo(a)pyrene ratio between the air samples and the skin contamination samples, the dermal uptake of benzo(a)pyrene was also estimated. This was about 51% of the total absorbed amount (range 8%-92%, n = 12). The total excreted amount of urinary 1-OH-pyrene as a result of exposure to PAHs during the five consecutive workshifts varied between 36 and 239 nmol. A multiple regression model of the mass balance between pyrene dose (both dermal and respiratory) and 1-OH-pyrene excretion confirmed the relevance of the dermal exposure route. The variation in urinary 1-OH-pyrene excretion was determined more by the dermal pyrene dose than by the respiratory dose. The model showed an estimate of the percentage of the absorbed amount of pyrene that is metabolised and excreted as 1-OH-pyrene in urine. For the 12 workers this percentage varied between 13% and 49% depending on smoking habits and consumption of alcohol. The results of this study indicate that among coke oven workers, the skin is the main route of uptake of PAHs. Preventive measures to reduce exposure to PAHs should be focused more on the reduction of dermal contamination by PAHs than on the reduction of inhaled dose.     

尿中1-羟基芘作为焦炉工多环芳烃暴露生物监测指标的研究

目的探讨焦炉工外暴露等级与尿中1-羟基芘(1-OHPy)浓度的关系。方法以某焦化厂120名生产工人和30名非接触者为研究对象,收集班后6h尿,并收集个人信息,用高效液相法测定尿中1-羟基芘。结果尿中1-羟基芘浓度呈炉顶>炉侧>炉底>对照组的趋势。与外暴露呈显著相关性(r=0.653,P<0.01),同样外暴露条件下,吸烟者尿中1-羟基芘显著高于未吸烟者(P<0.05)。结论焦炉工尿中1-羟基芘水平与外暴露等级存在明显的相关性,可反映多环芳烃暴露个体的内剂量水平。