交通警察血铅水平及其相关因素的研究.PDFVIP

北京东西分析仪器有限公司 交通警察血铅水平及其相关因素的研究 摘要为了解交警血铅水平及影响因素,对可能影响血铅(Y )的因素即外勤年 限(X 1)、尿铅(X 2)、血红蛋白(X 3)、吸烟与否(X 4)、血锌(X 5)及年龄(X 6) 进行了单因素相关和多因素逐步回归分析。结果表明交警血铅和尿铅均数为 119.79µg/L 和 6.99µg/L,与对照组(88.38µg/L 和 5.34µg/L)差异有显著性。单 因素分析表明血铅与外勤年限、尿铅和年龄呈正相关,与血红蛋白呈负相关，多 元逐步回归方程为:Y = 132.95+0.93X1+10.01X2-0.86X3+7. 37X4+14.30X5。交 警血铅有随外勤年限增加呈升高趋势,且使血红蛋白合成受到一定程度抑制。 关键词 交警 交通警察 血铅 血红蛋白 Abstract To study the blood lead levels and their correlative factors for traffic police, a mono2factor correlation analysis and multiple stepwise regression analysis on blood lead levels (Y ) and their correlative factors, such as outdoor-on-duty years (X 1) , urine lead level (X 2) , hemoglobin (X 3) , smoking (X 4) , blood zinc (X 5) and age (X 6) , were carried out. The results showed that the average levels for blood lead and urine lead for traffic police were 119.79 and 6.99µg/L respectively, which were significantly higher than those for controls (88.38 and5.34µg/L) .In mono-factor correlation analysis, blood lead levels showed a positive correlation with urine lead level and age, and a negative correlation with concentrations of hemoglobin. In multiple stepwise regression analysis, the regression equation w as established as Y = 132.95 +0.93X 1 +10.01X 2 –0.86X 3+ 7.37X 4+ 14.30X 5 It showed a significant tendency that the bloodlead levels increased with the increase of outdoor-on-duty years and the synthesis of hemoglobin was inhibited to a certain extent1 Key words Traffic police Blood lead Hemoglobin 1 北京东西分析仪器有限公司 铅作为汽油防爆剂被广泛应用于机动车,致使机动车尾气含铅量高,直接污染 大气,是城市道路空气中铅污染的主要来源[1,2 ] , 交警是环境铅的直接接触 者。2004 年 10 月我们对宿州市市区交警的血铅水平及影响因素进行了调查,旨 在为交通污染防治及交警的健康保障提供一些科学依据。 1材料与方法 1.1 对象 宿州市无其它职业性铅接触史的交警外勤队员 91 名,年龄 22～57 岁,外勤 3～28 年,值勤点分布在宿州市的主要交通要道。对照组选自本市无铅接