大同市空气中多环芳烃与人尿中1-羟基芘的分析

用GC~2/MS和HPLC鉴定出大同市空气中的多环芳烃化合物35种.对大同市不同功能区空气中苯并(a)芘(BaP)和人尿中1-羟基芘同步采样分析.结果表明,不同功能区BaP浓度有显著差别:采暖期浓度急剧增加,城区浓度为对照点的17倍,日均值达330ng/m~3.人尿中1-羟基芘的浓度与空气中BaP的浓度显著相关.采暖期城区尿中1-羟基芘的几何均值为1.86μmol/mol肌酐,非采暖期为1.14μmol/mol肌酐,均较北京市的均值高出五倍多.证明大同市由于直接燃煤,造成空气中多环芳烃的严重污染.

POLYNUCLEAR AROMATIC HYDROCARBONS IN AIR AND 1-HYDROXYPYRENE IN URINE FROM DIFFERENT SAMPLING LOCATIONS IN DATONG

Thirty five polynuclear aromatic hydrocarbons in Datong air were identified using GC,GC/ MS and HPLC. The benzo(a)pyrene in air and 1 hydroxypyrene in urine from different sampling locations in Datong were analysed by synchronously sampling. The results showed that the concentrations of benzo (a) pyrene from different functional districts were very different, but all increased sharply in heating season. The benzo (a)pyrene concentration in old city was 17 times higher than that in control clean area ,the average concentration was 330ng/m3. The concentration of 1-hydroxypyrene in human urine was correlated at a high level of significance with the contents of benzo (a)pyrene in ambient air at every sampling locations. The geometric mean of urinary 1-hydroxypyrene in old city was 1. 86umol/mol creat. for heating season and was 1. 14umol/mol creat for non-heating season,both values were 5 times higher than that in Beijing. It indicated that the pollution of polynuclear aromatic hydrocarbons from the burning of coal in Datong city was very serious.