共查询到19条相似文献,搜索用时 93 毫秒
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采用热带爪蟾胚胎测定江苏省常州市8家典型行业工业废水的发育毒性,结果显示:各行业工业废水对爪蟾胚胎的发育均有不同程度的影响,而印染、啤酒、电镀和化工行业出水的发育毒性更强。试验表明,理化指标并不能完全反映工业废水的综合毒性,而热带爪蟾胚胎可有效地表征其发育毒性。比较各行业工业废水的毒性,初步探讨热带爪蟾胚胎用于工业废水毒性检测的可行性。 相似文献
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采用热带爪蟾胚胎测定江苏省常州市8家典型行业工业废水的发育毒性,结果显示:各行业工业废水对爪蟾胚胎的发育均有不同程度的影响,而印染、啤酒、电镀和化工行业出水的发育毒性更强。试验表明,理化指标并不能完全反映工业废水的综合毒性,而热带爪蟾胚胎可有效地表征其发育毒性。比较各行业工业废水的毒性,初步探讨热带爪蟾胚胎用于工业废水毒性检测的可行性。 相似文献
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通过试验考察了上海某退役镀锌厂环境样品对青海弧菌、秀丽杆隐形线虫、斑马鱼、白菜种子和热带爪蟾的毒性效应。结果表明,生产区、废水处理区、原料仓储区的环境样品对各受试生物诱发很强的致死效应或生长发育抑制作用,同时其还表现出对热带爪蟾胚胎的致畸效应,潜在生态风险较大,场地后续搬迁及再利用过程中需重点关注这些区域。 相似文献
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斑马鱼在环境保护中的应用 总被引:2,自引:1,他引:1
斑马鱼易饲养、易管理,体外受精和体外发育,可常年产卵、孵化,且胚胎透明,因此早期作为模型动物广泛用于生物学研究中.近年来,随着水环境问题日益突出,迫切需要有效、全面的环境监测手段.斑马鱼或其转基因品种不失为水环境监测的首选生物.因为它们对各类水环境污染十分敏感,可实时检测进入水环境的污染物.文章对斑马鱼在环境激素、水质... 相似文献
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王红丹 《环境监测管理与技术》1992,4(2):41-44
流动注射分析(Flow Injection Analysis,简称FIA)是丹麦学者J Ruzicka和E HHnasen于1975年提出的一种自动化分析技术,该技术具有分析速度快,精确度高,节省试剂和样品,操作费用低以及适用性广等特点,因而很快为广大分析工作者所接受.FIA在水质监测领域有广泛的应用,目前其测定项目以金属离子和无机阴离子为主,对水中有机物的流动注射分析报道较少.近年来人们对各类水体中的有机污染愈来愈重视.往往要进行连续监测以收集大量的动态资料,用于水质管理.在这方面FIA具有其 相似文献
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周崇群 《环境监测管理与技术》1990,2(4):19-22
自动监测是环境监测技术发展的一个方向,这主要因为它能连续反映环境污染的动态变化和及时监测.还能减少或消除手工误差.提高恻定精度,担负大量样品的分析.本文简要介绍了水质监测系统的构成和水质自动监测分析技术的分类与特点以及该技术的进展,着重谈了水质自动监测在实施排污总量控制和在强化污染源监督监测与水源保护等应用中的必要性和迫切性等看法.并评论了对开展水质自动监测在认识上的两种片面观点. 相似文献
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地表水水质自动监测系统及其建设中的若干问题 总被引:6,自引:2,他引:4
结合近几年广东省地表水水质自动监测系统建设中的一些经验,对水质自动监测系统作一介绍,并针对其作为一项新的技术的实施,着重对其建设中的若干问题进行探讨. 相似文献
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Water samples were collected between 1999 and 2000 from wetlands in Minnesota that contained malformed frogs. The water samples were analyzed for 14 minerals/ions and screened for the presence of biologically active compounds using Xenopus laevis. Results indicated that water from two sites, CWB and ROI2, induced severe retardation with embryo lengths reduced 20% after 96 hr of development. The developmental delay observed with water from ROI2 was alleviated by supplementation with sodium, while both sodium and potassium alleviated the developmental delay observed with water whose mineral content mimicked that of CWB. Seasonal fluctuations in the sodium and potassium content at ROI2 and NEY correlated with changes in the rates of Xenopus development. Xenopus embryos reared on water from ROI2 for 120 hr displayed gut malformations not present in embryos reared on a synthetic media designed to mimic the mineral content of the water from ROI2. Embryos reared on water from ROI2 supplemented with minerals at levels comparable to that routinely employed in the rearing of Xenopus were neither retarded nor malformed. It is proposed that climate driven hydrology may influence the mineral composition at selected wetlands and delay development which may alter window(s) of susceptibility towards biologically active agents and the occurrence of malformed frogs. 相似文献
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Jin YH Kawamura A Park SC Nakagawa N Amaguchi H Olsson J 《Journal of environmental monitoring : JEM》2011,13(10):2886-2894
Environmental monitoring data for planning, implementing and evaluating the Total Maximum Daily Loads (TMDL) management system have been measured at about 8-day intervals in a number of rivers in Korea since 2004. In the present study, water quality parameters such as Suspended Solids (SS), Biochemical Oxygen Demand (BOD), Dissolved Oxygen (DO), Total Nitrogen (TN), and Total Phosphorus (TP) and the corresponding runoff were collected from six stations in the Yeongsan River basin for six years and transformed into monthly mean values. With the primary objective to understand spatiotemporal characteristics of the data, a methodologically systematic application of a Self-Organizing Map (SOM) was made. The SOM application classified the environmental monitoring data into nine clusters showing exclusively distinguishable patterns. Data frequency at each station on a monthly basis identified the spatiotemporal distribution for the first time in the study area. Consequently, the SOM application provided useful information that the sub-basin containing a metropolitan city is associated with deteriorating water quality and should be monitored and managed carefully during spring and summer for water quality improvement in the river basin. 相似文献
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应用柴窝堡湖2005—2009年的监测数据,对其水质进行评价,并用综合营养状态指数法分析了湖库总体富营养化水平,利用水质N/P比值和叶绿素a的相关分析,探讨了湖库富营养化的限制因子,并对改善水质提出了几点建议。 相似文献
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Comparative analysis of regional water quality in Canada using the Water Quality Index 总被引:1,自引:0,他引:1
The Canadian Council of Ministers for the Environment (CCME) has developed a Water Quality Index (WQI) to simplify the reporting of complex water quality data. This science-based communication tool tests multi-variable water data against numeric water quality guidelines and/or objectives to produce a single unit-less number that represents overall water quality. The CCME WQI has been used to rate overall water quality in spatial and temporal comparisons of site(s). However, it has not been used in a comparative-analysis of exposure sites to reference sites downstream of point source discharges. This study evaluated the ability of the CCME WQI to differentiate water quality from metal mines across Canada at exposure sites from reference sites using two different types of numeric water quality objectives: (1) the water quality guidelines (WQG) for the protection of freshwater aquatic life and (2) water quality objectives determined using regional reference data termed Region-Specific Objectives (RSO). The application of WQG to the CCME WQI was found to be a good tool to assess absolute water quality as it relates to national water quality guidelines for the protection of aquatic life, but had more limited use when evaluating spatial changes in water quality downstream of point source discharges. The application of the RSO to the CCME WQI resulted in assessment of spatial changes in water quality downstream of point source discharges relative to upstream reference conditions. 相似文献
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改进密切值法在阳澄湖水质评价中的应用 总被引:2,自引:0,他引:2
以阳澄湖水质分析为例,利用改进密切值法分别对其东、中、西3个湖区湖体水质进行评价。结果表明,在复杂的湖泊生态系统水质评价中,该方法不仅具有模型构建简便灵活、计算量小、结果直观的特点,而且区别于以往笼统的将不同时段、不同区域湖体水质判断为某一类标准的评价模式,能够客观准确地分析不同时空的水质分布规律,预判水质变化趋势,同时区别于将污染指标等权处理或忽略指标权重的评价方式,通过引进熵权法计算权重判断主要污染因子,使湖泊生态系统水质评价结果更真实合理。 相似文献
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环境监测质量控制中水质标准物质应用问题的研究 总被引:2,自引:0,他引:2
对环境监测质量控制中水质标准物质的应用问题进行了分析和论述。分别从实验室分析测试标准、质量控制标准的不确定度、质量控制方式的选择以及实验分析的准确度和分析方法研究等方面,讨论了实验室质量控制过程中水质标准物质应用出现的误区和问题。对如何做好实验室分析的质量控制,从多个不同的方面介绍了在使用分析校准用标准物质及水质质量控制用标准物质过程中,如何避免或减少分析误差的方法和措施。同时对计量、质量控制的重要工具水质标准物质的正确使用以及标准物质的规范应用方面提出了相关建议。 相似文献