000			01920nam a22002897a 4500
003			ZW-GwMSU
005			20230411152049.0
008			230411b |||||||| |||| 00| 0 eng d
040			_aMSU _cMSU _erda
100			_aZHANG, Lei
245			_aPolycyclic aromatic hydrocarbons in the sediments of Xiangjiang River in south-central China _boccurrence and sources
264			_aVerlag _bSpringer _c2013
336			_2rdacontent _atext _btxt
337			_2rdamedia _aunmediated _bn
338			_2rdacarrier _avolume _bnc
440			_aEnvironmental earth sciences _vVolume , number ,
520			_aThe Xiangjiang River (XR), located in Hunan province in south-central China, is the second largest tributary of the Yangtze River. The occurrence, and sources of the polycyclic aromatic hydrocarbons (PAHs) in the 20 surface sediment samples from XR were analyzed, and the biological risks of the PAHs on the benthic organisms were assessed using sediment quality guidelines. The results showed that the occurrence level of the 16 USEPA priority PAHs in the surface sediments ranged from 190 to 983 ng/g (dry weight) with a mean concentration of 452 ± 215 ng/g. The concentration of phenanthrene was the highest with a mean concentration of 104 ± 44 ng/g. The compositions and principal components analysis indicated that the PAHs in the sediments in XR were mainly from pyrogenic sources which could be attributed to the open burning of rice straws and coal combustion of the local industries in the XR basin. The PAH contamination in the sediments was considered to be moderate, and has posed a small adverse biological effect on the benthic organisms.
650			_aPAHs
650			_asurface sediments
650			_axiangjiang
700			_aQIN, Yanwen
700			_aZHENG, Binghui
700			_aLIN, Tian
700			_aLI, Yuanyuan
856			_uhttps://doi.org/10.1007/s12665-012-1939-x
942			_2lcc _cJA
999			_c161666 _d161666