Entity

Time filter

Source Type


Wang B.,Chinese Research Academy of Environmental Sciences | Duan X.,Chinese Research Academy of Environmental Sciences | Huang N.,Chinese Research Academy of Environmental Sciences | Wang C.,Tsinghua University | And 3 more authors.
Huanjing Kexue Xuebao/Acta Scientiae Circumstantiae | Year: 2011

Urinary hydroxy polycyclic aromatic hydrocarbons (OH-PAHs) are internal dose indicators of human exposure to PAH. We recruited 60 urban residents (F/M=1:1, age: 30~60) and 60 rural residents (F/M=1:1, age: 30~60) in Taiyuan, Shanxi Province and measured 6 OH-PAHs in collected first morning urine samples in heating and non-heating season, respectively. The results showed that the medians of concentrations of 2-hydroxynaphthalene (2-OHNap), 2-hydroxyfluorene (2-OHFlu), 3-hydryxyphenanthrene (3-OHPhe), 9-hydryxyphenanthrene (9-OHPhe), 1-hydroxypyrene (1-OHPy) and 3-hydroxybenzo(a)pyrene (3-OHBaP) were 8.97, 0.34, 0.19, 0.18, 0.34, 0.002 μmol·mol-1 creatinine in urban residents and 5.01, 0.85, 0.18, 0.24, 0.61, 0.001 μmol·mol-1 creatinine in rural residents, respectively. For urban residents, the concentrations of 2-OHNap and 1-OHPy for males were higher than those for females (p<0.05). The concentrations of 1-OHPy in heating season were significantly higher than those in non-heating season (p<0.05), while the concentrations of 2-OHNap showed no significant seasonal differences. For rural residents, OH-PAHs for males were higher than those for females (p<0.05). 2-OHNap and 2-OHFlu were higher in heating season than those in non-heating season, while 3-OHPhe, 9-OHPhe and 1-OHPy were different (p<0.05). The concentrations of urinary 1-OHPy, 2-OHNap, 2-OHFlu and 3-OHPhe were higher than those for American residents reported by National Report on Human Exposure to Environmental Chemicals in USA. This study indicated that the levels of OH-PAHs in rural and urban residents were different owing to the different exposure sources of PAHs in different groups. Since toxicity and carcinogenicity of PAHs were different with different structures and rings, external exposure research of PAHs for urban and rural residents were suggested in future studies.


Wang B.-B.,Chinese Research Academy of Environmental Sciences | Duan X.-L.,Chinese Research Academy of Environmental Sciences | Liu P.,Tsinghua University | Huang N.,Chinese Research Academy of Environmental Sciences | And 2 more authors.
Zhongguo Huanjing Kexue/China Environmental Science | Year: 2012

60 coke oven workers (F/M=2:1, age: 40~50) from Taiyuan, Shanxi province were recruited and their urine samples were collected before and after 8h work in heating (December 2009) and non-heating season (September 2009), respectively, with 60 farmer as control group. Informations on their age, gender, and others were gathered by a unified questionnaire. Concentration levels of 6OH-PAHs in urine samples were determined by enzymatic hydrolysis-high-performance liquid chromatography. The average concentration of 2-hydroxynaphthalene (2-OHNap), 2-hydroxyfluorene (2-OHFlu), 3-hydryxyphenanthrene (3-OHPhe), 9-hydryxyphenanthrene (9-OHPhe), 1-hydroxypyrene (1-OHPy) and 3-hydroxybenzo(a)pyrene (3-OHBaP) were 19.83, 5.63, 2.05, 1.75, 1.67 and 0.23 μmol/mol creatinine in coke oven workers. The trend of OH-PAHs concentration level was in order of 2-OHNap> 2-OHFlu> ∑-OHPhe (3-OHPhe +9-OHPhe)> 1-OHPy> 3-OHBap; the levels of men were higher than that of women, and the levels in heating period were higher than that in non-heating period. Concentrations trend of urinary OH-PAHs level was top side workers> side oven workers > bottom side workers > control group, which was adjust for external exposure categories. Concentrations of OH-PAHs after 8 hours work were higher than the levels before work, and 3-OHBap had the most greatly increase by 55%. The results show that there was a proportional relationship between urinary concentrations of OH-PAHs and external exposure levels of coke oven workers. Therefore, further research of the relationship between external and internal exposure levels of coke oven workers is recommended.

Discover hidden collaborations