CAJ | 학술논문

为了解辽河源头区典型支流———条子河四平段表层水体中多环芳烃( PAHs )的污染特征,分别于丰水期、平水期和枯水期采集条子河10个代表性断面的上覆水水样,测定了样品中16种优控PAHs的质量浓度、分析了其时空分布和来源,并对其生态风险进行了评价。结果表明：条子河表层水体中总PAHs的质量浓度(∑PAHs)范围为319．8~3715．9 ng/L,平均值为1476．0 ng/L,PAHs的组成以2~3环为主,占∑PAHs总量的53．1%~81．0%,5~6环的PAHs均未检测出。不同水期间,∑PAHs均值的大小顺序为：枯水期(2035．0 ng/L)>平水期(1272．5 ng/L)>丰水期(967．9 ng/L)。空间分布上,∑PAHs的检测最高值(3715．9 ng/L)和平均浓度最大值(3194．8 ng/L)均出现在位于四平市城区出境断面(汇合口)处。 PAHs主要来源是石油、草木、煤炭的混合燃烧。条子河表层水体中苯并[ a]芘的当量为5．1~36．1 ng/L,高于国家地表水环境质量标准值,条子河表层水体中PAHs存在一定的生态风险。
위료해료하원두구전형지류———조자하사평단표층수체중다배방경( PAHs )적오염특정,분별우봉수기、평수기화고수기채집조자하10개대표성단면적상복수수양,측정료양품중16충우공PAHs적질량농도、분석료기시공분포화래원,병대기생태풍험진행료평개。결과표명：조자하표층수체중총PAHs적질량농도(∑PAHs)범위위319．8~3715．9 ng/L,평균치위1476．0 ng/L,PAHs적조성이2~3배위주,점∑PAHs총량적53．1%~81．0%,5~6배적PAHs균미검측출。불동수기간,∑PAHs균치적대소순서위：고수기(2035．0 ng/L)>평수기(1272．5 ng/L)>봉수기(967．9 ng/L)。공간분포상,∑PAHs적검측최고치(3715．9 ng/L)화평균농도최대치(3194．8 ng/L)균출현재위우사평시성구출경단면(회합구)처。 PAHs주요래원시석유、초목、매탄적혼합연소。조자하표층수체중분병[ a]비적당량위5．1~36．1 ng/L,고우국가지표수배경질량표준치,조자하표층수체중PAHs존재일정적생태풍험。
The pollution characteristics of polycyclic aromatic hydrocarbons ( PAHs) in the surface water from Tiaozi River were investigated, a tributary of Liaohe River. Water samples were collected from 10 representative sites in summer, autumn and winter, respectively. The concentrations of 16 priority PAHs were investigated, and their distribution, sources and ecological risk were also evaluated. Results indicated the total mass concentrations of PAHs (∑PAHs) were 319. 8 to 3 715. 9 ng/L, with an average of 1 746. 0 ng/L. PAHs in the surface water were dominated by 2 rings to 3 rings ( 53. 1% to 81. 0%) , 5 to 6 ring PAHs were undetected out. The average of ∑PAHs decreased in the order of winter (2 035. 0 ng/L) > autumn (1 272. 5 ng/L) > summer (967. 9 ng/L).∑PAHs in the water sample collected near Siping city ( Huihekou) showed the highest measurement concentrations (3 715. 9 ng/L) and the highest average concentrations (3 194. 8 ng/L). The PAH source identification indicated that they were mainly from the combined combustion of petroleum, grass, wood and coal. The Benzo[ a] pyrene e-quivalent in the surface water of Tiaozi River ranged from 5. 1 to 36. 1 ng/L, which was higher than the National Surface Water Quality Standards. The PAHs post a bit high ecological risk to aquatic organisms.