检索结果-南通市图书馆

Effects of typical karst tourist town on the Lijiang River water: from heavy metals to N-nitrosamines

Journal of Earth Science 2024年

作者： Yuanyu Shan Yuru Su xinli xing Bingquan Zhu Honghu Zeng Yuan Zhang Junyu Li Xiaoyu Yan Wenwen Chen Benjian Li College of Environmental Science and Engineering， Guilin University of Technology School of Environmental Studies， China University of Geosciences State Key Laboratory of Biogeology and Environmental Geology， China University of Geosciences College of arts， Guilin University of Technology College of arts and communication， China University of Geosciences 430070 China

N-nitrosamines are nitrogenous organic pollutants with high carcinogenicity to human. Heavy metal pollution in aquatic system is currently a major environmental problem. Tourism in typical karst areas may influence the environment through wastewater discharge. However， it remains unclear whether these activities would cause water pollution. To evaluate the impact of tourism activities in typical tourist towns， this study investigated the occurrence and sources of 18 N-nitrosamines， eight heavy metals （HMs）， and dissolved inorganic nitrogen （DIN） in the Lijiang River and its tributaries. Seven N-nitrosamines were detected as the dominant compounds in N-nitroso-N-ethylaniline （NEA， average of 24.8 ng/L） and N-nitroso-l-proline （NPRO， 20.4 ng/L）， while especially low concentrations of HMs （Mn， Cu， As， Ni， Cr， Co， Pb， and Cd） and DIN (NH4+-N， NO2--N， and NO3--N) were observed. The most important influencing factors were seasonal factors， followed by land-use type and mainstem and tributary factors. Principal component analysis revealed that in the city with developed tourism and relatively less heavy industry， aquaculture and agricultural wastewater were identified as the primary sources of N-nitrosamines. Meanwhile， domestic sewage and agricultural wastewater were found to be the main sources of HMs and DIN， respectively. The ecological risk assessments for all pollutants are relatively low （< 1）. Therefore， N-nitrosamines， HMs， and DIN pollution caused by tourist activities pose a negligible risk to the Lijiang River.

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炼油污染场地地下水DOM三维荧光指纹特征及指示意义

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地球科学 2024年第6期49卷 2199-2212页

作者：李小倩刘鋆何宁洁宋晓东邢新丽刘运德中国地质大学环境学院湖北武汉430078 国家环境保护水污染溯源与管控重点实验室湖北武汉430078 中国地质大学生物地质与环境地质国家重点实验室湖北武汉430078 中国地质大学地质调查研究院湖北武汉430074

综合应用荧光峰识别、三维荧光光谱(excitation-emission matrix,EEMs)区域积分法、聚类分析和相关性分析等方法,探究污黄土高原某炼油厂污染场地地下水溶解性有机物(dissolved organic matter,DOM)三维荧光光谱特征及其对有机污染的指... 详细信息

综合应用荧光峰识别、三维荧光光谱(excitation-emission matrix,EEMs)区域积分法、聚类分析和相关性分析等方法,探究污黄土高原某炼油厂污染场地地下水溶解性有机物(dissolved organic matter,DOM)三维荧光光谱特征及其对有机污染的指示作用.结果显示,污染场地地下水DOM的EEMs表现出显著的石油类污染物的指纹特征.EEMs中表征苯和石油烃的区域Ⅰ和区域Ⅱ的荧光区域积分标准体积占总区域积分标准体积的55%~88%,与地下水样品有机污染组分的测试结果吻合.基于三维荧光指纹特征相似性的聚类分析揭示了污染场地地下水有机污染类型与空间异质性分布特征.污染地下水EEMs区域积分标准体积与有机组分、光谱参数、水化学组成的相关性分析,表明DOM的三维荧光指纹谱能够有效指示场地地下水的有机污染程度、组成特征和水化学的响应,为地下水污染监测和预警的有效提供示踪工具.

关键词：溶解性有机物荧光光谱指纹荧光光谱区域积分地下水有机污染炼油场地水文地质

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西北某退役炼油厂地下水中挥发性有机物污染特征及健康风险评价

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地质科技通报 2024年第2期43卷 293-306页

作者：李淼刘威杰余悦邢新丽张原李小倩刘运德祁士华中国地质大学(武汉)环境学院武汉430078 中国地质大学(武汉)生物地质与环境地质国家重点实验室武汉430078

挥发性有机物(VOCs)可长期存在于地下水中,从而对人体产生危害。针对西北某退役炼油厂受有机物污染的浅层地下水,开展了地下水中挥发性有机物的污染特征调查,并对其可能产生的健康风险进行评价。研究结果表明,该场地地下水中共检出18种V... 详细信息

挥发性有机物(VOCs)可长期存在于地下水中,从而对人体产生危害。针对西北某退役炼油厂受有机物污染的浅层地下水,开展了地下水中挥发性有机物的污染特征调查,并对其可能产生的健康风险进行评价。研究结果表明,该场地地下水中共检出18种VOCs,VOC单体检出率范围为6.25%~56.25%。特征污染物以苯和1,2,4-三甲苯为主,两者检出率均为56.25%,对照我国《地下水质量标准》(GB/T14848-2017)的Ⅲ类标准,苯和1,2,4-三甲苯超标率均达到50%。场地内污染物主要来自原液化气储罐区和原柴油灌区的垂向渗漏,表明这两个区域可能为该场地地下水的主要污染源,且污染物分布会受水文地质条件和地下水流向的综合影响,对场地下游地下水造成污染。健康风险评价结果表明,通过饮水途径造成的健康风险占据主导。83.3%的点位致癌风险值(CR)大于10^(-6),可能存在致癌风险,其中位于渣油罐区GW11点位的致癌风险值大于10^(-4),具有致癌风险;50%的点位危害商(HQ)大于1,会产生非致癌风险,对人体造成一定影响。因此,今后应加强对区域饮水问题的关注和管控。

关键词：退役炼油厂地下水挥发性有机物污染特征健康风险评价

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桂林会仙湿地土壤中多环芳烃分布特征与健康风险评价

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安全与环境工程 2024年第2期31卷 282-290页

作者：余悦段萌语邢新丽程铖余海阔李淼祁士华中国地质大学(武汉)环境学院湖北武汉430078 中国地质大学(武汉)图书馆湖北武汉430074 中国地质大学(武汉)生物地质与环境地质国家重点实验室湖北武汉430078

岩溶地貌由于其较薄的土壤层及高度发达的岩溶管道易导致污染物对地下环境产生威胁,因此有必要对岩溶区土壤即天然防护层中污染物水平与健康风险进行评价。以桂林会仙湿地土壤中16种优控多环芳烃(PAHs)为研究对象,分析了桂林会仙湿地冬... 详细信息

岩溶地貌由于其较薄的土壤层及高度发达的岩溶管道易导致污染物对地下环境产生威胁,因此有必要对岩溶区土壤即天然防护层中污染物水平与健康风险进行评价。以桂林会仙湿地土壤中16种优控多环芳烃(PAHs)为研究对象,分析了桂林会仙湿地冬夏两季不同土地利用类型土壤中PAHs组成特征,解析其来源,并基于蒙特卡罗模拟开展了健康风险评价。结果表明:桂林会仙湿地土壤中PAHs的含量范围为8.57~1407.21 ng/g,以4环PAHs为主,园地土壤中PAHs含量最低;采用主成分分析-多元线性回归(PCA-MLR)方法开展的PAHs来源解析结果显示研究区PAHs主要来源于机动车排放源;相关性分析结果显示,人类活动是研究区土壤中PAHs含量的主要影响因素;健康风险评价结果显示研究区土壤中PAHs对人体的潜在致癌风险可忽略。

关键词：土壤多环芳烃(PAHs) 土地利用类型来源解析健康风险评价桂林会仙湿地

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Background levels of OCPs,PCBs,and PAHs in soils from the eastern Pamirs,China,an alpine region influenced by westerly atmospheric transport

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Journal of Environmental Sciences 2022年第5期34卷 453-464页

作者： Yang Ding Huanfang Huang Wei Chen Yuan Zhang Wenwen Chen xinli xing Shihua Qi State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesWuhan 430074China School of Environmental Studies China University of GeosciencesWuhan 430074China Department of Physical and Environmental Sciences University of Toronto ScarboroughTorontoONM1C 1A4Canada State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China College of Environmental Science and Engineering Guilin University of TechnologyGuilin 541004China

Long-range atmospheric transport(LRAT)plays a crucial role in the occurrence of persis-tent organic pollutants(POPs)in remote *** studying the LRAT of POPs on the Tibetan Plateau,westerly-controlled regions have received insufficient attention compared with regions influenced by the Indian monsoon or air flow from East *** investigated the residual levels of POPs in soils from the eastern Pamirs and used air backward trajectory analysis to elucidate the influence of potential source regions via *** pes-ticides(OCPs,mainly comprising DDTs,HCHs,and HCB),polychlorinated biphenyls(PCBs,mainly comprising penta-and hexa-CBs),and polycyclic aromatic hydrocarbons(PAHs,mainly comprising three-and four-ring)were detected at low concentrations of 40-1000,

关键词： Persistent organic pollutants Long-range atmospheric transport Westerlies Tibetan Plateau Remote regions

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Soil concentrations and soil-air exchange of organochlorine pesticides along the Aba profile, east of the Tibetan Plateau, western China

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Frontiers of Earth Science 2013年第4期7卷 395-405页

作者： Hongxia LIU Shihua QI Dan YANG Ying HU Feng LI Jia LIU xinli xing State Key Laboratory of Biogeology and Environmental Geology School of Environmental Studies China University of Geosciences Wuhan 430074 China Hubei Key Laboratory of Mine Environmental Pollution Control & Remediation School of Environmental Science and Engineering Hubei Polytechnic University Huangshi 435003 China Faculty of Engineering China University of Geosciences Wuhan 430074 China

Mianzhu--Aba profile, east of the Tibetan Plateau, was selected to study the occurrence of organo- chlorine pesticides （OCPs） along an altitudinal gradient. Dichlorodiphenyltrichloroethanes （DDTs）, hexachlorocy- clohexanes （HCHs） and Aldrin, Dieldrin and Endrin （Drins） in surface soils were detected in winter （March） and summer （July）. Soil concentrations （ng.g-1, dw） in winter and summer ranged as follws： DDTs, 0.37-179.16 and 0.32-42.57; HCHs, 0.14-10.76 and 0.55-32.71; Drins, N.D-3.99 and 0.02-6.93, respectively. Main soil OCPs were p,p＇-DDT, p,p＇-DDE, fl-HCH and Drins, among which Drins were rarely reported in current literature of the Tibetan Plateau. Higher OCP concentra- tions in the profile were attributed close to the agricultural fields of the Sichuan Basin, current lindane and non- dicofol DDTs inputs, and also long-range atmospheric transport from abroad. Soil OCP concentrations underwent obvious seasonal variation, with higher DDTs in winter and higher HCHs and Drins in summer. It may be caused by climatic conditions, summer monsoon type, and physico-chemical properties of such contaminants. Though ＂rest＂ phenomenon occurred in some sampling sites, HCHs and Drins showed an increasing trend with increasing altitude, while DDTs showed an evident decrease with increasing altitude. The altitudinal distribu- tions of OCPs were all consistent with previous findings in other mountainous regions. A primary fugacity analysis on OCPs soil-air exchange indicated that the profile may be secondary sources for HCHs and Endrin. As with Aldrin,Dieldrin, and DDTs, the profile may be both secondary sources and sinks.

关键词： organochlorine pesticides (OCPs) seasonal variation altitudinal pattern soil-air exchange Mian-zhu--Aba profile east of the Tibetan Plateau

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Organochlorine pesticide residues in surface water from Sichuan Basin to Aba Prefecture profile, east of the Tibetan Plateau

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Frontiers of Earth Science 2015年第2期9卷 248-258页

作者： Hongxia LIU Ying HU Shihua QI xinli xing Yuan ZHANG Dan YANG Chengkai QU State Key Laboratory of Biogeology and Environmental Geology School of Environmental Studies China University of Geosciences Wuhan 430074 China Hubei Key Laboratory of Mine Environmental Pollution Control & Remediation School of Environmental Science and Engineering Hubei Polytechnic University Huangshi 435003 China Faculty of Engineering China University of Geosciences Wuhan 430074 China

Organochlorine pesticides （OCPs） found in rivers from the Sichuan Basin to Aba Prefectttre profile were analyzed to assess possible health risks to adults and children who use the river as a source of drinking water. OCP concentrations in surface water ranged between 22.29-274.28 ng·L^-1. Compared with other published data around the world, OCP levels in this study were moderate. Among all OCPs, hexachlorobenzene （HCB） and hexa- chlorocyclohexanes （HCHs） were the predominant com- pounds. Higher concentrations of OCPs were attributed close to the agricultural fields of the Sichuan Basin, current OCPs inputs, and long-range atmospheric transport from abroad. Various spatial patterns of OCPs in the profile might be affected by the usage and physicochemical properties of the pesticides, in addition to the adjacent geographical environment. The health risk assessment indicated that most OCPs had little impact on human health according to the acceptable risk level for carcino- gens （10^-6） recommended by the US EPA. However, carcinogenic effects caused by heptachlor, Aldrin, HCB, and a-HCH might occur in drinking water. The risk of negative impacts caused by OCPs is much higher for children than for adults.

关键词： organochlorine pesticides (OCPs) surfacewater spatial distribution health risk assessment TibetanPlateau

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Concentrations and classification of HCHs and DDTs in soil from the lower reaches of the Jiulong River, China

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Frontiers of Environmental Science & Engineering 2012年第2期6卷 177-183页

作者： Jiaquan ZHANG Shihua QI xinli xing Lingzhi TAN Wei CHEN Ying HU Dan YANG Chenxi WU State Key Laboratory of Biogeology and Environmental Geology and School of Environmental StudiesChina University of GeosciencesWuhan 430074China School of Environmental Science and Engineering Huangshi Institute of TechnologyHuangshi 435003China

Soil is an important source to other environ- mental media and organisms for organochlorine pesticides （OCPs） bioaccumulation. Twenty-four representative sur- face soil samples were collected from the lower reaches of the Jiulong River, China, in 2009. The concentrations of hexachlorocyclohexane isomers （HCHs） ranged from 0.38 to 39.52 ng.g~, with a mean value of 9.51 ng.g-~. The concentrations of dichlorodiphenyltrichloroethanes （DDTs） and their metabolites were within the ranges of 0.94-700.99 ng. gl, with a mean value of 71.17 ng. g-1. The concentrations of HCHs and DDTs in the soil were lower than the first grade level （50 ng. g-a） of the Chinese Environmental Quality Standard （GB 15618-1995）. Hier- archical Cluster Analysis （HCA） and Pearson＇s bivariate Correlations Analysis （PCA） were used to analyse the distribution and contamination levels of OCPs in this region. The results showed that DDTs were the major contaminants and there were no significant correlations between various OCPs concentrations and the total organic carbon （TOC） contents. A significant positive correlation was observed between HCHs and DDTs （p 〈 0.01）, which indicates that HCHs and DDTs may have similar sources and fate in the study area.

关键词： Jiulong River hexachlorocyclohexane (HCH)and dichlorodiphenyltrichloroethan (DDT) classification,Hierarchical Cluster Analysis (HCA) Pearson's bivariateCorrelations Analysis (PCA)

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Fate of PM2.5-bound PAHs in Xiangyang, central China during 2018 Chinese spring festival: Influence of fireworks burning and air-mass transport

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Journal of Environmental Sciences 2020年第11期32卷 1-10页

作者： Tianpeng Hu Yao Mao Weijie Liu Cheng Cheng Mingming Shi Zhanle Chen Qian Tian Jiaquan Zhang Shihua Qi xinli xing Laboratory of Basin Hydrology and Wetland Eco-restoration School of Environmental StudiesChina University of GeosciencesWuhan 430078China State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesWuhan 430078China School of Environmental Science and Engineering Hubei key Laboratory of Mine Environmental Pollution Control and RemediationHubei Polytechnic UniversityHuangshi 435003China

Variations of levels,possible source and air mass transmission were investigated for 16 USEPA priority-controlled PAHs in PM2.5 during 2018 Chinese Spring Festival(CSF)in Xiangyang City,central China which is the North-South pollutant airmass transport channel of *** 37 samples were *** concentrations of 16 PAHs for the Pre–CSF day(Pre–CSFD),during the CSF day(CSFD)and after the CSF day(Af–CSFD)are 33.78±17.68 ng/m3,22.98±6.49 ng/m3,and 8.99±4.44 ng/m3,*** resolution samples showed that 16 PAHs are higher in the morning(06:00–11:00)or afternoon(11:30–16:30),than those in the evening(17:00–22:00)and at night(22:30–05:30),whereas the result is reversed during the *** burning can obviously increase the mass concentration of *** mass trajectory indicated that Xiangyang is a sink area of pollutants for northwest and southeast,and the sources of the northeast and *** air mass only can be transmitted out through northeast and *** is effective for improvement of air quality in Wuhan and Hunan to control fireworks emission in Henan and local *** burning was an important source for PAHs during CSFD,biomass,coal combustion,and traffic emission were the main sources of PAHs for Pre–CSFD and Af–CSFD *** health risk on the CSFD was higher than the acceptable levels,especially during the intensive fireworks burning,the risk value far exceed 1.0×10^-4,controlling burning fireworks is required.

关键词： PAHs Fireworks burning Air mass trajectory Source identification Incremental lifetime cancer risk

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Study of Aerobics Effects on Female College Students＇ Health

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International Journal of Technology Management 2013年第12期 95-97页

作者： xinli xing Physical Education Department of Qingdao Agricultural University Qingdao Shandong 266109 China

Aerobics includes gymnastics, music, dance and aesthetics, using specialized equipment by hand and holding light equipment to achieve fitness and operation of exercises, it is a bodybuilding methods centering for the purpose of emerging entertainment and ornamental sports, and it is also a strong public artistic gymnastics. It is with superb skill, charming and colorful parade of action, posture which is coordinated with the music to demonstrate the extraordinary artistic charm, thus attracting more and more students to participate in. Because it is different from traditional hand gymnastic exercises, and does not have too high demands for space and equipment. Practicing it just needs fast-paced and lively musical accompaniment, and dynamic movements can make people feel good, so it wins the majority of young people, especially girls. Calisthenics is as one of the means to work out for students; in particular, it develops a lifelong habit of physical exercise and plays an important role for college girls＇ lifelong fitness awareness. The topic is studying female college students on aerobics body shape, function, quality and impact of mental health to promote the development of physical education reform.

关键词： Aerobics College Students Health Fitness

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