Selecting suspension sample 51 stations in Bohai Bay contents of heavy metals(Fe, Mn, Si, Ba) analysis, studied the distribution of the suspension of heavy metals. It Showed that in the study area, the content of iron...Selecting suspension sample 51 stations in Bohai Bay contents of heavy metals(Fe, Mn, Si, Ba) analysis, studied the distribution of the suspension of heavy metals. It Showed that in the study area, the content of iron was the highest, silicon content was lowest; in descending order: Fe>Mn>Ba>Si; the coefficient of variation is between 7.60 and 110.35; except barium greater the degree of dispersion(coefficient of variation is greater than 100).With the samples of stations, the 4 kinds of heavy metals are from low to high, from the south to the north. Silicon content was the highest in 51 stations. The other 3 elements appeared in 50 stations.展开更多
Using inductively coupled plasma mass spectrometry(ICP-MS)to detect the Pb content in the multi-phase medium(water,sediment and large benthic organisms)in the artificial reef areas of Bohai Bay in Tianjin to analysis ...Using inductively coupled plasma mass spectrometry(ICP-MS)to detect the Pb content in the multi-phase medium(water,sediment and large benthic organisms)in the artificial reef areas of Bohai Bay in Tianjin to analysis its spatial distribution characteristics and potential ecological risk.Using different evaluation methods.The results showed that:the Pb content is varied from 0.003-0.024μg/L,mean 0.008±0.007μg/L,the highest values appear in the No.9 station;the minimum value is 5 stations.Pb content of sediment is varied from 0.003-0.024μg/L,mean 0.008±0.007μg/L,the highest values appear in the No.9 station;the minimum value is 5 stations.The vertical sediment distribution of Pb decreased in the order:lower>middle>upper layer in each station.Risk evaluation showed that potential ecological risk index of Pb is low in the reef sediments;accumulate partial index is belong to moderate pollution levels;enrichment factor is belong to the light^pollution-free.Pb content of organisms is rang from 0.004-0.519 mg/kg,mean 0.185±0.170 mg/kg in reef area;BCF value of Pb content in organisms is generally higher than BAF value;its health risk factor is far less than 1,indicating that Pb has no obvious health risks on exposure population.展开更多
基金financially supported by Key Laboratory of Marine Oil Spill Identification and Damage Assessment Technology,State Oceanic Administration (201214)Key Laboratory of Pollution Processes and Environmental Criteria (Nankai University),Ministry of Education (KL-PPEC-2013-09)Tianjin aquatic Bureau Youth Fund (J-2014-08)
文摘Selecting suspension sample 51 stations in Bohai Bay contents of heavy metals(Fe, Mn, Si, Ba) analysis, studied the distribution of the suspension of heavy metals. It Showed that in the study area, the content of iron was the highest, silicon content was lowest; in descending order: Fe>Mn>Ba>Si; the coefficient of variation is between 7.60 and 110.35; except barium greater the degree of dispersion(coefficient of variation is greater than 100).With the samples of stations, the 4 kinds of heavy metals are from low to high, from the south to the north. Silicon content was the highest in 51 stations. The other 3 elements appeared in 50 stations.
基金supported by the following funds,Monitoring and evaluation of Marine fishery resources restoration,proliferation and discharge in the 100 000 tons roadway project of Dagang port area of Tianjin portMarine fishery resources restoration of Tianjin liquefied natural gas (LNG) project+1 种基金Youth science and technology innovation project of Tianjin municipal bureau of aquatic industry (J-2014-08)Tianjin agricultural science and technology achievements transformation and promotion project (201304150)
文摘Using inductively coupled plasma mass spectrometry(ICP-MS)to detect the Pb content in the multi-phase medium(water,sediment and large benthic organisms)in the artificial reef areas of Bohai Bay in Tianjin to analysis its spatial distribution characteristics and potential ecological risk.Using different evaluation methods.The results showed that:the Pb content is varied from 0.003-0.024μg/L,mean 0.008±0.007μg/L,the highest values appear in the No.9 station;the minimum value is 5 stations.Pb content of sediment is varied from 0.003-0.024μg/L,mean 0.008±0.007μg/L,the highest values appear in the No.9 station;the minimum value is 5 stations.The vertical sediment distribution of Pb decreased in the order:lower>middle>upper layer in each station.Risk evaluation showed that potential ecological risk index of Pb is low in the reef sediments;accumulate partial index is belong to moderate pollution levels;enrichment factor is belong to the light^pollution-free.Pb content of organisms is rang from 0.004-0.519 mg/kg,mean 0.185±0.170 mg/kg in reef area;BCF value of Pb content in organisms is generally higher than BAF value;its health risk factor is far less than 1,indicating that Pb has no obvious health risks on exposure population.
