Objective:To determine the concentrations of Fe,Zn,Ni,Cu,Mn,Pb,Cd and Co in macroalgae from Sinop coasts of the Sounthern Black Sea.Methods:Chlorophyta-green algae(Chaetomorpha spp.,Cladophora spp.,Ulva linza,Ulva int...Objective:To determine the concentrations of Fe,Zn,Ni,Cu,Mn,Pb,Cd and Co in macroalgae from Sinop coasts of the Sounthern Black Sea.Methods:Chlorophyta-green algae(Chaetomorpha spp.,Cladophora spp.,Ulva linza,Ulva intestinalis,Ulva lactuca,Ulva rigida);Ochrophyta-brown alga[Cystoseira barbata(C.barbata)]and Rhodophyta-red algae(Ceramium spp.,Corallina panizzoi)were collected seasonally in the year 2010 from the upper infralittoral zone of inner harbour,outer harbour,Gerze and Ayancık of Sinop coasts of the Black Sea.The samples were analysed by atomic absorption spectrophotometer in order to determine heavy metal levels in different algal division species along Sinop coasts and to provide information of marine environment quality as marine strategy framework directive is aimed to ensure good environmental status of the seas by 2020 in the European Union.Results:The results showed that metal concentrations in all studied green algae,brown alga and red algae increase in the order:Cd<Co<Ni<Pb<Cu<Zn<Mn<Fe,Cd<Co<Cu<Ni<Pb<Mn<Zn<Fe and Co<Cd<Ni<Cu<Pb<Mn<Zn<Fe,respectively.In all divisions,among the essential elements the highest concentrations exhibited by Fe,in Gerze station-(2328±89)μg/g dry weight in Chaetomorpha spp.;(2143±78)μg/g dry weight in C.barbata and(968±20)μg/g dry weight in Ceramium spp.Conclusions:The highest accumulation of different metals in the analysed algae species were:Fe and Co in Chaetomorpha spp.,Zn in C.barbata,Ni and Cu in Ulva linza,Mn in Ulva intestinalis,Pb and Cd in Corallina panizzoi.展开更多
重金属污染和赤潮都是较为突出的海洋环境问题,为给相关研究提供基础试验数据,在实验室条件下研究了Cu2+、Cd2+、Zn2+对米氏凯伦藻和微小原甲藻的急性毒性效应.通过2种藻的EC50(半数抑制浓度)比较了其敏感性差异,分析了不同浓度重金属...重金属污染和赤潮都是较为突出的海洋环境问题,为给相关研究提供基础试验数据,在实验室条件下研究了Cu2+、Cd2+、Zn2+对米氏凯伦藻和微小原甲藻的急性毒性效应.通过2种藻的EC50(半数抑制浓度)比较了其敏感性差异,分析了不同浓度重金属胁迫对微藻的影响;同时,利用TEM(transmission electronic microscopy,透射电镜技术)和FCM(flow cytometry,流式细胞术)研究了重金属Cu2+的急性毒性胁迫在亚细胞水平上对米氏凯伦藻的损伤.其中,Cu2+、Cd2+、Zn2+对微小原甲藻的48 h EC50和96 h EC50分别为0.514和0.276 mg/L、0.835和1.215 mg/L及4.376和7.976 mg/L;对米氏凯伦藻的48 h EC50和96 h EC50分别为1.881和1.881 mg/L、5.405和6.268 mg/L及13.134和18.732 mg/L.结果表明:2种微藻的种群相对增长率随着胁迫浓度的增加而下降,3种重金属离子的毒性表现出Cu2+>Cd2+>Zn2+的趋势,微小原甲藻对重金属胁迫更敏感;Cu2+胁迫可使米氏凯伦藻细胞体积增大,内容物复杂程度增高,但叶绿素a的MFI(mean fluorescence intensity,平均荧光强度)的变化不明显;Cu2+胁迫对藻膜结构的损伤较明显,但对线粒体及叶绿体的结构影响不明显.展开更多
The contamination of fish type products such as silver pomfret fish fillets by potentially toxic elements(PTEs)has raised global health concerns.Related studies regarding the concentration of PTEs in fillets of silver...The contamination of fish type products such as silver pomfret fish fillets by potentially toxic elements(PTEs)has raised global health concerns.Related studies regarding the concentration of PTEs in fillets of silver pomfret fish were retrieved among some international databases such as Scopus,Pub Med and Embase between 1 January 1983 and 10 March 2020.The pooled(mean)concentration of PTEs in fillets of silver pomfret fish was meta-analyzed with the aid of a random-effect model(REM).Also,the non-carcinogenic risk was estimated via calculating the 95 th percentile of the total target hazard quotient(TTHQ).The meta-analysis of 21 articles(containing 25 studies or data reports)indicated that the ranking of PTEs in fillets of silver pomfret fish was Fe(11,414.81μg/kg wet weight,ww)>Zn(6055.72μg/kg ww)>Cr(1825.79μg/kg ww)>Pb(1486.44μg/kg ww)>Se(1053.47μg/kg ww)>Cd(992.50μg/kg ww)>Ni(745.23μg/kg ww)>Cu(669.71μg/kg ww)>total As(408.24μg/kg ww)>Co(87.03μg/kg ww)>methyl Hg(46.58μg/kg ww).The rank order of health risk assessment by country based on the TTHQ for adult consumers was Malaysia(2.500)>Bangladesh(0.886)>Iran(0.144)>China(0.045)>Pakistan(0.020)>India(0.015),while the corresponding values for child consumers was Malaysia(11.790)>Bangladesh(4.146)>Iran(0.675)>China(0.206)>Pakistan(0.096)>India(0.077).The adult consumers in Malaysia and children in Malaysia and Bangladesh were at considerable non-carcinogenic risk.Therefore,following the recommended control plans in order to reduce the health risk associated with the ingestion of PTEs via consumption of silver pomfret fish fillets is crucial.展开更多
文摘Objective:To determine the concentrations of Fe,Zn,Ni,Cu,Mn,Pb,Cd and Co in macroalgae from Sinop coasts of the Sounthern Black Sea.Methods:Chlorophyta-green algae(Chaetomorpha spp.,Cladophora spp.,Ulva linza,Ulva intestinalis,Ulva lactuca,Ulva rigida);Ochrophyta-brown alga[Cystoseira barbata(C.barbata)]and Rhodophyta-red algae(Ceramium spp.,Corallina panizzoi)were collected seasonally in the year 2010 from the upper infralittoral zone of inner harbour,outer harbour,Gerze and Ayancık of Sinop coasts of the Black Sea.The samples were analysed by atomic absorption spectrophotometer in order to determine heavy metal levels in different algal division species along Sinop coasts and to provide information of marine environment quality as marine strategy framework directive is aimed to ensure good environmental status of the seas by 2020 in the European Union.Results:The results showed that metal concentrations in all studied green algae,brown alga and red algae increase in the order:Cd<Co<Ni<Pb<Cu<Zn<Mn<Fe,Cd<Co<Cu<Ni<Pb<Mn<Zn<Fe and Co<Cd<Ni<Cu<Pb<Mn<Zn<Fe,respectively.In all divisions,among the essential elements the highest concentrations exhibited by Fe,in Gerze station-(2328±89)μg/g dry weight in Chaetomorpha spp.;(2143±78)μg/g dry weight in C.barbata and(968±20)μg/g dry weight in Ceramium spp.Conclusions:The highest accumulation of different metals in the analysed algae species were:Fe and Co in Chaetomorpha spp.,Zn in C.barbata,Ni and Cu in Ulva linza,Mn in Ulva intestinalis,Pb and Cd in Corallina panizzoi.
文摘重金属污染和赤潮都是较为突出的海洋环境问题,为给相关研究提供基础试验数据,在实验室条件下研究了Cu2+、Cd2+、Zn2+对米氏凯伦藻和微小原甲藻的急性毒性效应.通过2种藻的EC50(半数抑制浓度)比较了其敏感性差异,分析了不同浓度重金属胁迫对微藻的影响;同时,利用TEM(transmission electronic microscopy,透射电镜技术)和FCM(flow cytometry,流式细胞术)研究了重金属Cu2+的急性毒性胁迫在亚细胞水平上对米氏凯伦藻的损伤.其中,Cu2+、Cd2+、Zn2+对微小原甲藻的48 h EC50和96 h EC50分别为0.514和0.276 mg/L、0.835和1.215 mg/L及4.376和7.976 mg/L;对米氏凯伦藻的48 h EC50和96 h EC50分别为1.881和1.881 mg/L、5.405和6.268 mg/L及13.134和18.732 mg/L.结果表明:2种微藻的种群相对增长率随着胁迫浓度的增加而下降,3种重金属离子的毒性表现出Cu2+>Cd2+>Zn2+的趋势,微小原甲藻对重金属胁迫更敏感;Cu2+胁迫可使米氏凯伦藻细胞体积增大,内容物复杂程度增高,但叶绿素a的MFI(mean fluorescence intensity,平均荧光强度)的变化不明显;Cu2+胁迫对藻膜结构的损伤较明显,但对线粒体及叶绿体的结构影响不明显.
基金the student research committee at Shahid Beheshti University of Medical Sciences for the financial grants supporting this study(1398/9920)。
文摘The contamination of fish type products such as silver pomfret fish fillets by potentially toxic elements(PTEs)has raised global health concerns.Related studies regarding the concentration of PTEs in fillets of silver pomfret fish were retrieved among some international databases such as Scopus,Pub Med and Embase between 1 January 1983 and 10 March 2020.The pooled(mean)concentration of PTEs in fillets of silver pomfret fish was meta-analyzed with the aid of a random-effect model(REM).Also,the non-carcinogenic risk was estimated via calculating the 95 th percentile of the total target hazard quotient(TTHQ).The meta-analysis of 21 articles(containing 25 studies or data reports)indicated that the ranking of PTEs in fillets of silver pomfret fish was Fe(11,414.81μg/kg wet weight,ww)>Zn(6055.72μg/kg ww)>Cr(1825.79μg/kg ww)>Pb(1486.44μg/kg ww)>Se(1053.47μg/kg ww)>Cd(992.50μg/kg ww)>Ni(745.23μg/kg ww)>Cu(669.71μg/kg ww)>total As(408.24μg/kg ww)>Co(87.03μg/kg ww)>methyl Hg(46.58μg/kg ww).The rank order of health risk assessment by country based on the TTHQ for adult consumers was Malaysia(2.500)>Bangladesh(0.886)>Iran(0.144)>China(0.045)>Pakistan(0.020)>India(0.015),while the corresponding values for child consumers was Malaysia(11.790)>Bangladesh(4.146)>Iran(0.675)>China(0.206)>Pakistan(0.096)>India(0.077).The adult consumers in Malaysia and children in Malaysia and Bangladesh were at considerable non-carcinogenic risk.Therefore,following the recommended control plans in order to reduce the health risk associated with the ingestion of PTEs via consumption of silver pomfret fish fillets is crucial.
