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Yao S.,Fujian Normal University | Yao S.,Key Laboratory of Humid Subtropical Eco Geographical Process of the Ministry of Education | Wei R.,Fujian Normal University | Wei R.,Key Laboratory of Humid Subtropical Eco Geographical Process of the Ministry of Education | And 8 more authors.
Huanjing Kexue Xuebao/Acta Scientiae Circumstantiae | Year: 2015

The concentrations of triclosan (TCS) and methyl-triclosan (MTCS) were analyzed in 20 surface sediment samples collected from inland rivers in Fuzhou city. The observed concentrations of TCS and MTCS were in the ranges of 11.8 to 120.4 μg·kg-1, undetectable (n.d.) to 41.7 μg·kg-1, respectively; and the average concentrations were 50.1 μg·kg-1 and 7.8 μg·kg-1, respectively. The concentration of TCS was positively correlated with the total organic carbon (TOC) of the sediments (r=0.590, p<0.05), whereas the concentration of MTCS was not the case. risk assessment results using the risk quotient (RQ) method showed that TCS in 14 samples and MTCS in 11 samples posed high risks (RQ>1). TCS and MTCS in all other samples posed medium risk (0.1≤RQ<1), except for MTCS in the three samples with undetectable MTCS. ©, 2015, Science Press. All right reserved.


Lin J.-W.,Fujian Normal University | Lin J.-W.,Key Laboratory of Humid Subtropical Eco Geographical Process of the Ministry of Education | Ni J.-Z.,Fujian Normal University | Ni J.-Z.,Key Laboratory of Humid Subtropical Eco Geographical Process of the Ministry of Education | And 8 more authors.
Huanjing Kexue/Environmental Science | Year: 2011

The concentrations of 15 US EPA priority polycyclic aromatic hydrocarbons (PAHs) in 33 soil samples (0-10 cm layer) collected from various functional zones in Quanzhou city were analyzed by UPLC coupled with fluorescence detector. The sources of PAHs in the topsoils were apportioned using isomer ratios, and factor analysis and multiple linear regression. The ecological risks of PAHs in the topsoils were evaluated by using benzo [a] pyrene toxic equivalents (TEQ BaP). Results showed that the total concentrations of PAHs in the soils ranged from 28.2 to 1432.3μg · kg -1, and 4 to 6 ring PAHs were the dominant compounds. The total concentrations of PAHs in soil samples from different functional zones decreased in the order of industrial areas > residential areas > scenic areas > agricultural fields. The PAHs in soils of Quanzhou city mainly originated from the combustion of coal, biomass fuels (straw), and liquid fossil fuels including gasoline and diesel. The TEQ BaP of the 15 PAHs ranged from 1.6 to 131.6μg · kg -1, with an average value of 38.9μg · kg -1. The total TEQ BaP of 10 PAHs in 34.6% of the soil samples exceeded the Dutch target reference value, suggesting that there are potential ecological risks in the topsoils in some areas of Quanzhou city.


Chen W.-F.,Key Laboratory of Humid Subtropical Eco geographical Process of the Ministry of Education | Chen W.-F.,Fujian Normal University | Ni J.-Z.,Key Laboratory of Humid Subtropical Eco geographical Process of the Ministry of Education | Ni J.-Z.,Fujian Normal University | And 8 more authors.
Zhongguo Huanjing Kexue/China Environmental Science | Year: 2010

The concentrations of 15 PAHs in eleven surface sediment samples collected from inland rivers in Fuzhou City were analyzed. The results showed that the total concentrations of 15 PAHs ranged from 84.3 to 2248.1 μg/kg and the average was 899.6 μg/kg, which was at the intermediate pollution level. The geographical distribution of the total PAHs can be characterized by higher concentration in the southern and central region and lower concentration in the northern, eastern and western region of Fuzhou city. The total concentration of 15 PAHs had a significantly positive correlation with the total organic carbon concentration in sediments (r=0.7829, P<0.05). Among the 15 PAHs, the concentration of 11 PAH isomers had significant positive correlations with the concentration of the total organic carbon (r=0.6557~0.9256, P<0.05), and the concentration of 12 PAH isomers had highly significant correlations between each other (r=0.6706~0.9908, P<0.01). The diagnostic ratios indicated that the sources of PAHs in sediments were mixed and mainly derived from local traffic pollution. The ecological risks of PAHs in sediments were evaluated according to the sediment quality guideline ERL (Effects Range Low). The concentrations of Ace, Flu and Phe in two sediment samples and those of Ace and Flu in one sediment sample exceeded ERL value. In the case of average ERL quotient of the PAH species, only one sediment sample had the average ERL quotient value greater than 1, and had certain ecological risks.


Xue L.-J.,Key Laboratory of Humid Subtropical Eco geographical Process of the Ministry of Education | Gao R.,Key Laboratory of Humid Subtropical Eco geographical Process of the Ministry of Education | Yang Y.-S.,Key Laboratory of Humid Subtropical Eco geographical Process of the Ministry of Education | Yin Y.-F.,Key Laboratory of Humid Subtropical Eco geographical Process of the Ministry of Education | And 2 more authors.
Forest Research | Year: 2011

The objective of this study is to investigate the distribution pattern of organic carbon and black carbon in soils of Wuyi Mountains. The results indicated that the contents of organic carbon in 2000-250 μm fraction, 250-50 μm fraction and <50 μm fraction ranged from 7.16 to 78.78 g·kg-1, 1.48 to 10.30 g·kg-1 and 0.58 to 3.86 g·kg-1 respectively. The contents of black carbon in corresponding fraction varied from 0.58 to 22.19 g·kg-1, 0.11 to 3.57 g·kg-1 and 0.07 to 0.87 g·kg-1, which indicated that the organic carbon and black carbon were mainly presented in 2000-250 μm fraction. The regression analysis showed that there was a significant linear or logarithmic relationship between soil organic carbon and black carbon in corresponding fractions and whole soil, and the proportion of black carbon to organic carbon was 6%-35% in different soils. The data also suggested that the black carbon had a high relative content in <50μm fraction of red soil, yellowish red and yellow soil, but in 250-50 μm fraction of meadow soil.

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