检索结果-南通市图书馆

Journal of Environmental Sciences 2024年第3期137卷 347-357页

作者： Tengda Shi Ruijing Li Jie Fu Chao Hou Hui Gao Guanjie Cheng Haibo Zhang Shuaichen Jin Liang Kong guangshui na College of Marine Technology and Environment Dalian Ocean UniversityDalian 116023China Laboratory for coastal marine eco-environment process and carbon sink of Hainan province/Yazhou Bay Innovation Institute Hainan Tropical Ocean UniversitySanya 572022China national Marine Environmental Monitoring Center Dalian 116023China College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai 201306China NCS Testing Technology Co. Ltd.Beijing 10081China

Eleven organophosphate esters(OPEs)in the air and seawater were investigated from the northwestern Pacific Ocean to the Southern Ocean during the 2018 Chinese 34th Antarctic Scientific *** concentration of total OPEs ranged from 164.82 to 3501.79 pg/m~3in air and from 4.54 to 70.09 ng/L in *** halogenated OPEs,tri(chloropropyl)phosphate(TCPP)and tri(2-chloroethyl)phosphate(TCEP),were generally more abundant than the non-halogenated OPEs.A levelⅢfugacity model was developed to simulate the transfer and fate of seven OPEs in the air and seawater regions of the central Ross *** model results indicate that OPEs are transferred from the air to the seawater in the central Ross Sea in summer,during which the Ross Sea acts as a final OPE *** and wet deposition dominated the processes involving OPE transfer to *** OPE degradation process was also found to be more pervasive in the atmosphere than in the seawater *** findings highlights the importance of long-range transport of OPEs and their air–seawater interface behavior in the Antarctic.

关键词： Organophosphate esters(OPEs) Long-range transport Fugacity model Antarctic Fate

The fate of antibiotic resistance genes in the coastal lagoon with multiple functional zones

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2023年第6期128卷 93-106页

作者： Shisheng Li Hui Gao Haibo Zhang Guangke Wei Qin Shu Ruijing Li Shuaichen Jin guangshui na Yali Shi Laboratory for coastal marine eco-environment process and carbon sink of Hainan provincet/Yazhou Bay Innovation Institute Hainan Tropical Ocean UniversitySanya 572022China national Marine Environmental Monsitoring Center Dalian 116023China College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai 201306China School of Environment Hangzhou Institute for Advanced StudyUCASHangzhou 310024China

Coastal lagoons provide many important services to human society,but their year-round use for aquaculture introduces large amounts of *** contamination of antibiotic resistance genes(ARGs)is therefore of great *** this study,50 ARGs subtypes,two integrase genes(intl1,intl2),and 16S rRna genes were detected by high-throughput quantitative PCR,and standard curves of all target genes were prepared for *** occurrence and distribution of ARGs in a typical coastal lagoon(XinCun lagoon,China)were comprehensively *** detected 44 and 38 subtypes of ARGs in the water and sediment,respectively,and discuss the various factors influencing the fate of ARGs in the coastal ***-lincosamides-streptogramins B was the primary ARG type,and macB was the predominant *** efflux and antibiotic inactivation were the main ARG resistance *** XinCun lagoon was divided into eight functional *** ARGs showed a distinct spatial distribution owing to the influence of microbial biomass and anthropogenic activity in different functional *** rafts,abandoned fish ponds,the town sewage zone,and mangrove wetlands provided a large quantity of ARGs to the XinCun *** and heavy metals also significantly correlated with the fate of the ARGs,especially NO_(2)^(−)-N and Cu,which cannot be *** is noteworthy that lagoon-barrier systems coupled with persistent pollutant inputs result in coastal lagoons acting as a“buffer pool”for ARGs,which can then accumulate and threaten the offshore environment.

关键词： Coastal lagoon Antibiotic resistance genes High-throughput qPCR Multifunctional zones Influence factors

海南陵水潟湖典型持久性有机污染物的赋存、来源及生态风险

在线全文

学校读者我要写书评

暂无评论

海洋环境科学 2024年第4期43卷 619-626页

作者：张银天游俊杰王维支利文李十盛李瑞婧高会张晓迪那广水海南热带海洋学院崖州湾创新研究院/海南省近岸海洋生态环境与碳汇重点实验室/生态环境学院海南三亚572022 国家海洋环境监测中心辽宁大连116023

潟湖是天然的养殖场,具有保护海岸、防风避浪等生态功能,但区域内人类活动产生的污染物可能会对环境产生健康威胁,因此,开展污染物赋存研究是维护潟湖生态平衡和保护渔业资源的重要举措。本研究运用高通量分析技术对海南陵水潟湖表层水... 详细信息

潟湖是天然的养殖场,具有保护海岸、防风避浪等生态功能,但区域内人类活动产生的污染物可能会对环境产生健康威胁,因此,开展污染物赋存研究是维护潟湖生态平衡和保护渔业资源的重要举措。本研究运用高通量分析技术对海南陵水潟湖表层水中典型持久性有机污染物(POPs)赋存状况进行分析,结合人类活动及潟湖环境特征探讨了表层水中多环芳烃(PAHs)、有机氯农药(OCPs)和多氯联苯(PCBs)的来源及生态风险。结果显示,陵水潟湖表层水体中ΣPAHs浓度范围为12.19~291.07 ng/L,ΣOCPs浓度范围为17.40~80.79 ng/L,ΣPCBs浓度范围为0.49~2.74 ng/L。ΣPAHs和ΣOCPs受人为活动干扰强烈,浓度呈现沿岸高于潟湖内部的分布趋势。表层水体中PAHs以低环为主(94%),主要来源为燃烧源;OCPs以六氯环己烷(HCHs)为主(42%),提示近期可能存在林丹的输入;PCBs以二氯联苯(37%)为主,可能来源于大气干湿沉降和非故意人为活动。风险熵结果显示,调查区域存在一定的生态风险,PCB206为主要生态风险单体。

关键词：持久性有机污染物潟湖赋存特征来源解析生态风险

Atmospheric concentration characteristics and gas/particle partitioning of PCBs from the North Pacific to the Arctic Ocean

在线全文

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2014年第9期33卷 32-39页

作者： WANG Zhen na guangshui GAO Hui WANG Yanjie YAO Ziwei national Marine Environmental Monitoring Center

Polychlorinated biphenyls （PCBs） were measured in atmospheric samples collected from the North Pacific to the Arctic Ocean between July and September 2012 to study the atmospheric concentration characteris-tics of PCBs and their gas/particle partitioning. The mean concentration of 26 PCBs （vapor plus particulate phase）（∑PCBs） was 19.116 pg/m^3with a standard deviation of 13.833 pg/m^3. Three most abundant conge-ners were CB-28, -52 and -77, accounting for 43.0% to∑PCBs. The predominance of vapor PCBs （79.0% to∑PCBs） in the atmosphere was observed.∑PCBs were negative correlated with the latitudes and inverse of the absolute temperature （1/T）. The significant correlation for most congeners was also observed between the logarithm of gas/particle partition coefficient （logKp） and 1/T. Shallower slopes （from ∑0.15 to ∑0.46, average ∑0.27） were measured from the regression of the logarithm of sub-cooled liquid vapor pressures （logpoL） and logKP for all samples. The difference of the slopes and intercepts among samples was insignifi-cant （p〉0.1）, implying adsorption and/or absorption processes and the aerosol composition did not differ significantly among different samples. By comparing three models, the J-P adsorption model, the octanol/air partition coefficient （KOA） based model and the soot-air model, the gas/particle partitioning of PCBs in the Arctic atmosphere was simulated more precisely by the soot-air model, and the adsorption onto el-emental carbon is more sensitive than the absorption into organic matters of aerosols, especially for low-chlorinated PCB congeners.

关键词： PCBs gas/particle partitioning Arctic Ocean soot-air model semi-volatile organic compounds

Distribution and characteristic of PAHs in snow of Fildes Peninsula

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2011年第9期23卷 1445-1451页

作者： guangshui na Chunyang Liu Zhen Wang Linke Ge Xindong Ma Ziwei Yao Key laboratory for Ecological Environment in Coastal Areas National Marine Environmental Monitoring Center Dalian 116023 China School of Bio- Technology Dalian Polytechnic University Dalian 116034 China

Polycyclic aromatic hydrocarbons （PAHs） investigation in different matrices has been reported largely,whereas reports on snow samples were ***,as the main matrix in the polar region,has an important study *** in snow samples were analyzed to investigate the distribution and contamination status of them in the Antarctic,as well as to provide some references for global migration of *** samples collected in Fildes Peninsula were enriched and separated by solid-phase membrane disks and eluted by methylene dichloride,then quantified by gas chromatography/mass *** types of PAHs were detected except for Benzo（a）*** component analysis method was applied to characterize *** factors （naphthalene,Fluorene and Phenanthrene） accounted for 60.57%,21.61% and 9.80%,*** results showed that the major PAHs sources maybe the atmospheric transportation,and the combustion of fuel in Fildes *** comparison of concentration and types of PAHs between accumulated snow and fresh snow showed that the main compound concentrations in accumulated snow samples were higher than those in fresh *** risk assessment indicated that the amount of PAHs in the snow samples would not lead to ecological risk.

关键词： PAHs snow Antarctic principal component analysis risk assessment

Distribution and sources of polycyclic aromatic hydrocarbons in the water column of Kongsfjorden, Arctic

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2020年第11期32卷 186-193页

作者： Ruijing Li Hui Gao Zhongqiang Ji Shuaichen Jin Linke Ge Humin Zong Liping Jiao Zhifeng Zhang guangshui na national Marine Environmental Monitoring Center Dalian 116023China Key Laboratory of Marine Ecosystems and Biogeochemistry Second Institute of OceanographyMinistry of Nature ResourcesHangzhou 310012China Key Laboratory of Ocean-Atmospheric Chemistry and Global Change Third Institute of OceanographyMinistry of Nature ResourcesXiamen 361005China Hainan Tropical Ocean University Key Laboratory of Utilization and Conservation for Tropical Marine BioresourcesMinistry of EducationChina

Kongsfjorden is known for its characteristic multi-layer water mass formed by the convergence of freshwaters from nearby glaciers and rivers and saline water from the Atlantic and *** distribution of polycyclic aromatic hydrocarbons(PAHs)in the water column of Kongsfjorden was investigated and their potential sources were *** total concentrations of 16 PAHs in the surface seawater and river water were in the range of 33.4-79.8 ng/L(mean 48.5 ng/L)and 2.3-201.4 ng/L(mean 126.1 ng/L),***,PAHs were mainly concentrated around river estuaries and the glacier front in the dissolved ***,the PAHs in the particulate phase followed surface-enrichment and depth-depletion patterns in most stations,with the maximum concentration found at 50 m depth in the central area of *** compositions of PAHs in seawater and rivers were similar,with two-ring and tricyclic PAHs comprising the majority of the dissolved and particulate *** found in Kongsfjorden waters appeared to be derived from multiple sources such as petroleum and coal *** in the bay mouth of Kongsfjorden were mainly introduced by the West Spitsbergen Current and the Arctic waters,while in the inner bay,atmospheric deposition and local sources were the major *** distribution of PAHs was mainly attributed to the suspended particulate distribution.

关键词： PAHs Distribution Source Water mass Kongsfjorden

Distribution characteristics and indicator significance of Dechloranes in multi-matrices at Ny-lesund in the Arctic

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2015年第2期27卷 8-13页

作者： guangshui na Wei Wei Shiyao Zhou Hui Gao Xindong Ma Lina Qiu Linke Ge Chenguang Bao Ziwei Yao Key Laboratory for Ecological Environment in Coastal Areas National Marine Environmental Monitoring Center Research Center for Eco-environmental Sciences Chinese Academy of Sciences School of Chemistry and Chemical Engineering Liaoning Normal University Dalian Institute of Science & Technology School of Biological Technology Dalian Polytechnic University

In recent years, Dechloranes have been widely detected in the environment around the ***, understanding and knowledge of Dechloranes in remote regions, such as the Arctic,remain lacking. Therefore, the concentrations of 5 Dechloranes in surface seawater, sediment,soil, moss, and dung collected from Ny-lesund in the Arctic were measured with the concentrations 93 pg/L, 342, 325, 1.4, and 258 pg/g, respectively, which were much lower than those in Asian and European regions. The mean ratios of anti-Dechlorane Plus（DP） to total DP（fanti） in seawater, sediment, soil, moss, dung, and atmospheric samples were 0.36, 0.21, 0.18,0.27, 0.66, and 0.43, respectively. Results suggested that the main source of DP in seawater,sediment, soil, and moss was long-range atmospheric transport. However, the ratio identified in dung was different, for which the migration behavior of the organism is probably the main source of DP.

关键词： Dechloranes Arctic Multi-matrices Distribution characteristic Ratio Source analysis

Characterization of the parent and hydroxylated polycyclic aromatic hydrocarbons in the soil of the Fildes Peninsula,Antarctica

在线全文

学校读者我要写书评

暂无评论

Advances in Polar Science 2020年第1期31卷 64-73页

作者： LI Ruijing GAO Yunze GAO Hui JIN Shuaichen CAO Shengkai YE Jiandong na guangshui national Marine Environmental Monitoring Center Dalian 116023China College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai 201306China Hainan Tropical Ocean University Sanya 572022China

Polycyclic aromatic hydrocarbons(PAHs)and hydroxylated polycyclic aromatic hydrocarbons(OH-PAHs)were investigated in the soil of the Fildes Peninsula,*** analytes were detected,and the concentration of OH-PAHs was 0.3001.847 ng g 1 dry weight,with the dominant components being danthron and *** relationship between soil total organic matter(TOM),OH-PAHs,and the parent PAHs in the soil was *** significant correlation was detected between the spatial distribution of OH-PAHs and the occurrence of PAHs,whereas a positive correlation with TOM was found.

关键词： Fildes Peninsula soil polycyclic aromatic hydrocarbons hydroxylated polycyclic aromatic

气相色谱-电子捕获检测法测定海水中十氯酮残留

在线全文

学校读者我要写书评

暂无评论

色谱 2012年第8期30卷 847-850页

作者：王艳洁那广水王震姚子伟国家海洋局近岸海域生态环境重点实验室国家海洋环境监测中心辽宁大连116023

通过考察提取溶剂、毛细管柱、净化条件及共溶出干扰物等因素对十氯酮测定的影响,建立了二氯甲烷液-液富集萃取、硫酸净化分离、气相色谱法(GC)-电子捕获检测器(ECD)测定海水介质中有机氯农药类持久性有机污染物十氯酮残留分析方法。1L... 详细信息

通过考察提取溶剂、毛细管柱、净化条件及共溶出干扰物等因素对十氯酮测定的影响,建立了二氯甲烷液-液富集萃取、硫酸净化分离、气相色谱法(GC)-电子捕获检测器(ECD)测定海水介质中有机氯农药类持久性有机污染物十氯酮残留分析方法。1L海水经50mL二氯甲烷萃取富集,浓缩后采用硫酸净化,以1%(体积分数)甲醇/正己烷混合溶液转移定容后,采用DB-5非极性毛细管柱进行GC分离,电子捕获检测器可测定其中十氯酮的含量;该方法采用外标法定量,在5～100μg/L范围内呈线性,线性相关系数为0.998 9。低、中、高3个浓度水平的平均加标回收率为81%～108%,相对标准偏差为1.2%～5.1%(n=6)。方法的检出限为0.6ng/L。结果表明,该方法灵敏度高,线性关系好,可以满足简便、快速、准确测定海水中十氯酮的要求。

关键词：气相色谱法电子捕获检测器十氯酮海水

水中磺胺二甲基嘧啶与ROS的光氧化反应动力学与转化途径

在线全文

学校读者我要写书评

暂无评论

科学通报 2016年第13期61卷 1445-1452页

作者：李军张蓬鞠茂伟于春艳葛林科那广水姚子伟上海海洋大学海洋科学学院上海201306 国家海洋环境监测中心国家海洋局近岸海域生态环境重点实验室大连116023

磺胺类抗生素（SAs）是水环境中普遍存在的新型污染物,光降解是其在表层水体中的重要消减途径,而SAs不同解离形态的光化学转化却鲜有报道.本研究以磺胺二甲基嘧啶（SMZ）为模型化合物,考察了3种解离形态与羟基自由基（·OH）、单线态氧... 详细信息

磺胺类抗生素（SAs）是水环境中普遍存在的新型污染物,光降解是其在表层水体中的重要消减途径,而SAs不同解离形态的光化学转化却鲜有报道.本研究以磺胺二甲基嘧啶（SMZ）为模型化合物,考察了3种解离形态与羟基自由基（·OH）、单线态氧（^1O2）的光氧化反应动力学,比较了活性氧物种（ROS）光氧化和直接光解的产物、途径,评估了相应的环境归宿和贡献.竞争动力学实验结果表明,3种解离形态SMZ与ROS的光氧化反应活性不同,由阳离子态到阴离子态依次增强,并且不同解离形态SMZ与^1O2的反应活性具有数量级的差别.在天然水p H6.0～9.0范围内,SMZ与·OH反应的最小环境半减期为21.17～32.12 h,^1O2反应的最小环境半减期为0.06～1.06 h.相对于直接光解和·OH氧化反应,SMZ的^1O2氧化对其为表层水体中光化学归趋作用最大.通过固相萃取（SPE）富集及Agilent 6410B三重串联四极杆液质联用仪（LC-MS-MS）分析,鉴定了SMZ与ROS反应的主要产物.^1O2氧化、·OH氧化及直接光解反应生成了不同的产物,表现为不同的反应途径.^1O2氧化产物较为单一,而·OH氧化产物较为丰富,主要为4种不同位置的羟基化产物.以上结果对于深入理解表层水体中该类抗生素污染物不同解离形态的复合光化学行为具有重要意义.

关键词：磺胺类抗生素解离形态羟基自由基单线态氧光化学行为