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通过对职业性接触苯工人20名(男女各半),连续两天重复接触后的肺泡气苯浓度观察研究,苯在肺中的平均潴留率:男工56.18±8.19％;女工56.04±12.64%,班末肺泡气苯浓度与空气浓度有极好的相关。脱离后苯经肺呈二相排出,半衰期分别为:男1/2Tα=6.81min,T1/2β=3.sh;女T1/2(?)=5.75min,T1/2β=3.8h,女工排出速率略低。
By observing the benzene concentration of alveolar gas in 20 exposed workers (male and female half), the average retention rate of benzene in the lung was 56.18 ± 8.19% for male and 56.04 ± 12.64% for female, There was an excellent correlation between benzene concentration in the alveolar gas and air concentration at the end of the session. After being separated from benzene, the two phases of the lung were excreted. The half-lives were: male 1 / 2Tα = 6.81min, T1 / 2β = 3.sh; female T1 / 2 The rate is slightly lower.