Monitoring and Evaluation of Present Situation of Environmental Quality in the Sea Area near the Aojiang Estuary in Wenzou

Based on the monitoring results of environmental quality in the sea area near the Aojiang estuary in Wenzou during 2010-2012,the present situation of environmental quality in the sea area was analyzed and evaluated. The results show that p H,DO,CODMn,petroleum,and heavy metals( Cu,Pb,Zn,Cd,Hg,As and Cr) in the sea area near the Aojiang estuary did not exceed the second-class standard of Seawater Quality Standard( GB 3097-1997),but both inorganic nitrogen and reactive phosphate in the sea area exceeded the second-class standard seriously,and the water quality of the sea area was in an eutrophic state; domestic sewage and fertilizer loss were the main sources of nitrogen and phosphorus. The standard index of most evaluation factors of sediment quality except for Zn was smaller than 1,meeting the demands of sediment quality for environmental protection.

Monitoring and Assessment of Current Situation of Environmental Quality in Yueqing Bay

Based on the monitoring results of environmental quality in Yueqing Bay during 2007-2014,the current situation of environmental quality in the bay was analyzed and assessed. The results show that pH,DO,CODMn,petroleum,and heavy metals( Cu,Pb,Zn,Cd,Hg,As and Cr)in the seawater of Yueqing Bay did not exceed the second class standard of Seawater Quality Standard( GB 3097-1997),but inorganic nitrogen and reactive phosphate in the seawater of Yueqing Bay exceeded the second class standard seriously,and the water quality of the bay was in an eutrophic state; the standard index of evaluation factors of sediment quality was smaller than 1,meeting the demands of sediment quality for environmental protection.

A cellphone-based colorimetric multi-channel sensor for water environmental monitoring

The development of colorimetric analysis technologies for the commercial cellphone platform has attracted great attention in environmental monitoring due to the low cost,high versatility,easy miniaturization,and widespread ownership of cellphones.This work demonstrates a cellphone-based colorimetric multi-channel sensor for quantifying multiple environmental contaminants simultaneously with high sensitivity and stability.To improve the sensitivity of the sensor,a delicate optical path system was created by using a diffraction grating to split six white beams transmitting through the multiple colored samples,which allows the cellphone CMOS camera to capture the diffracted light for image analysis.The proposed sensor is a universal colorimetric detection platform for a variety of environmental contaminants with the colorimetry assay in the range of 400–700 nm.By introducing the diffraction grating for splitting light,the sensitivity was improved by over six folds compared with a system that directly photographed transmitted light.As a successful proof-of-concept,the sensor was used to detect turbidity,orthophosphate,ammonia nitrogen and three heavy metals simultaneously with high sensitivity(turbidity:detection limit of 1.3 NTU,linear range of 5–400 NTU;ammonia nitrogen:0.014 mg/L,0.05–5 mg/L;orthophosphate:0.028 mg/L,0.1–10 mg/L;Cr(VI):0.0069 mg/L,0.01–0.5 mg/L;Fe:0.025 mg/L,0.1–2 mg/L;Zn:0.032 mg/L,0.05–2 mg/L)and reliability(relative standard deviations of six parallel measurements of 0.37%–1.60%and recoveries of 95.5%–106.0%in surface water).The miniature sensor demonstrated in-field sensing ability in environmental monitoring,which can be extended to point-of-care diagnosis and food safety control.

Feasibility Analysis of MERIS as a Tool for Monitoring Lake Guiers (Senegal) Water Quality

ENVISAT/MERIS scenes of Lake Guiers covering the period 2003-2010 were processed for concentration retrieval of chlorophyll a (CHLa), suspended particulate matter (SPM) and colored fraction of dissolved organic matter (CDOM), i.e. the three main parameters relevant to the water quality management of the lake. Estimates in the range of 30 - 117 μg CHLa L-1 (average 62.13 μg·L-1), 0.10 - 29.0 mg SPM L-1 (average 22.01 mg·L-1), and 1.10 - 1.90 CDOM m-1 (average 1.33 m-1) were recorded, suggesting the possibility of occasional poor quality waters in some compartments of the lake. The values calculated as part of this study are consistent with literature data. On the basis of these estimates, interpretations were made as to the feasibility of applying MERIS data for synoptic environmental monitoring purposes. The data were subjected to statistical analysis, including regression analysis and significance tests. Estimates of CHLa and CDOM revealed some level of correlation, which suggests that phytoplankton biomass degradation may account for nearly 47% of the dissolved optical compounds CDOM. Notable areas of high CHLa and CDOM concentrations are found in the southern inshore zone, an environment with less water agitation. In contrast, SPM concentrations tend to increase in environments of very shallow water marked by high water turbulence and bottom mobility. However, it was not possible to fully assess the model performance and detection accuracy of the results due to lack of ground truths. Nonetheless, the results show concentrations that compared well with the insitu data from earlier studies and data reported elsewhere from other lacustrine systems. Therefore, it can be inferred from this study that MERIS data present a useful low-cost (i.e. cost effective and readily available) approach for environmental monitoring of Lake Guiers waters with excellent spatial coverage. In addition, the study highlighted the minimal effect of the so-called “bottom effect” on model predictions, despite the small depth of the lake.

Grey associated analysis of the underground water quality effected by the leaching water of dumping area or hillock of coal mine

The underground water has been contaminated seriously by the leaching water of dumping area or hillock. To determine the pollution limits of underground water, author took samples in the study area, analyzed samples for water quality, assessed the water quality of each monitoring point by the grey associated analysis method, and gave out the classifications of the underground water quality of the study area. Comparing with fuzzy comprehensive appraisal method, it is demonstrated that grey associated analysis method is applied easily, because of its clear concept, simple and convenient calculation and excellently operation.

Impact of Sand Mining and Sea Reclamation on the Environment and Socioeconomic Activities of Ikate and Ilubirin Coastal Low Income Communities in Lagos Metropolis, Southwestern Nigeria

Land reclamation is gradually posing negative impact on man due to unplanned urbanization. A study was carried out on impact of land reclamation through sand mining of coastal communities in Ikate and Ilubirin in Lagos, Nigeria. Ten waters (8 surface and 2 groundwater sources), 10 soil samples and air were collected and taken for analysis. Results of water revealed concentrations lower than WHO (2017) and SON (2007) standards. Soil/sediment with average crustal value revealed Pb and Cd above standard values, which is attributed to anthropogenic influence on soils. Quality of air in the study was mainly particulate matter arising from the sea and reclaimed land in the surroundings of the environment with the highest Total Suspended Particulate of 0.8 mg/m3 in sulfur dioxide. This explains corrosion found on the roofs of the communities. Therefore, in the development planning adequate precautions should be put in place to avert environmental degradation.

Efficient Approach for Monitoring and Controlling Water Parameters Utilizing Integrated Treatment Based on WSNs

Research works of Wireless Sensor Networks (WSNs) applications and its constraints solutions occupy wide area around the world and attract many researchers. In this paper, an important one of environmental WSN applications is presented that is the water monitoring applications. An efficient approach for monitoring and controlling water parameters in real-time is implemented utilizing merging between WSN and designed simple workstation. For implementation simplicity, two water parameters (pH and temperature) are monitored and controlled in the proposed approach. Most of past work of water monitoring presented different proposed monitoring scenarios for different water parameters only. This research work utilizes the concept of interactive WSN nodes. The interactive nodes interact with the monitored water parameters to control its value. In the base station, the collected data is analyzed and the real-time value of the monitored parameters appears on the designed Graphic User Interface (GUI). The GUI is designed using the Matlab program. Through the GUI, the operator can switch the control between automatic and manual. ZigBee module is used for implementing the wireless communications between the nodes and the workstation. Due to the cost and simplicity, two sensors only are used in the proposed approach. Different real-time experiments are performed to test and measure the effectiveness and performance of the presented approach. These experiments reveal that the presented approach is effective for water treatment and efficient more than the past proposed water monitoring scenarios.

环境监测实验室质量控制方法探析

环境监测实验室主要是用于对环境中各种物理、化学和生物指标进行监测和分析。通过分析实验室数据,可以评估环境质量、监测环境变化、探测污染源和制定环境保护政策。环境监测实验室的质量控制是保证环境监测数据可靠性和准确性的重要因素。该文从数据的准确性和可靠性、法规和标准、数据的可信度、环境污染和趋势、公众健康和环境安全等方面探讨环境监测实验室质量控制的重要性,以及从校准和验证仪器设备、质量控制样品、质量控制图表、样品标识和追踪、实验操作规范、实验室环境控制、培训和认证等方面探讨环境监测实验室质量控制方法,以期为提高环境监测实验室工作质量提供参考。

基于单片机技术的无人船湿地环境监测系统设计

针对当前湿地环境监测工作耗时耗力、安全系数低、成本高和采样难度大的问题,提出基于STC89C52RC和HC-12的无人船湿地环境监测系统。系统以STC89C52RC单片机为主控单元,使用便携式移动电源供电,通过导线连接由nRF905无线通信模块、HC-12无线通信模块、电机驱动系统、舵机驱动系统、水样采集系统、全球定位系统(global position system,GPS)和水质指标监测系统等构成的湿地环境监测无人船系统硬件部分,通过串口分别连接和烧写使用C#、keil软件制作上位机程序与nRF905单片机驱动程序,实现计算机通过串口通信方式完成单片机之间的无线通信和AT指令集的收发,从而达成计算机远距离实时遥控无人船进行定点水样采集与pH、浊度、温度指标监测的目的。野外实验结果证明,系统运行稳定,且水质指标测定结果精准。

抗生素类新污染物的水质环境监测技术方法研究

为服务于抗生素类新污染物的水质环境监测需要,文章建立了固相萃取-高效液相色谱-三重四级杆质谱法,同步测定环境水体中磺胺类、喹诺酮类、大环内酯类等8种抗生素类新污染物。水样经固相萃取法富集净化后,用高效液相色谱-三重四级杆质谱法分离检测,根据化合物的保留时间和特征离子峰定性,外标法定量。结果表明:(1)目标物在液相色谱上得到有效的基线分离,保留时间稳定,在20~200 ng/L范围内标准曲线的相关系数R均在0.99以上;(2)8种抗生素类新污染物的方法检出限为0.65~3.12 ng/L;(3)经低浓度平行添加试验显示,方法的精密度为4.3%~10.9%,加标回收率为65%~98%。该研究建立的方法灵敏度高、适用性好,能够用于水质环境中磺胺嘧啶、磺胺醋酰、磺胺甲恶唑、磺胺甲氧哒嗪、磺胺噻唑、氧氟沙星、罗红霉素、螺旋霉素的监测分析。

环境检测技术在水质、监测中的应用研究

随着工业化进程的加速和城市化水平的提升,环境污染问题日益严重。环境检验检测是重要的手段,用于识别和控制污染,在污染源监测与治理中发挥着关键作用。然而,环境检验检测仍面临检测技术、数据标准化和监测网络等方面的挑战。基于此,文章对环境检验检测在污染源监测与治理中的作用进行了深入分析,并提出了相应的对策建议,以期提高环境检验检测能力,从而有效应对环境污染问题,促进可持续发展。

水质环境监测中微生物检测技术的应用分析

水资源是我国国民经济和社会发展的重要基础,水质环境监测对于保障水资源安全和水环境保护具有重要意义。微生物检测技术作为一种快速、准确、灵敏的水质监测手段,已经在我国水质监测领域得到广泛应用。为了更好地提高微生物检测效果,提高我国水质环境监测的有效性,本文将采取文献综述以及实践研究方法来对当前常用的微生物检测技术进行分析,并比较其优缺点,旨在为我国水质环境保护提供科学依据。

水质环境监测中微生物检测质量控制探讨

在水质环境监测领域,可利用的检测方法较多,就目前而言,应用较多的是微生物检测技术,以此强化对水质的管控,为新时代环保工程中的一项重要技术措施。微生物检测技术的合理应用,可以促使水质环境监测工作效率得到显著提升,但结合实际应用情况看,此项技术的应用中存在较多影响因素。所以,本文对微生物检测质量控制措施进行探讨,以供有关人员参考借鉴。

水文系统水环境监测实验室的质量管理方法探究

本文主要探讨水文系统水环境监测实验室的质量管理方法,包括质量管理体系的构建、样品采集和处理过程、分析测试方法、数据审核和报告编制等方面的管理策略。通过实施这些质量管理方法,可以确保实验室监测数据的准确性、可靠性和规范性,为水环境保护和水资源管理提供有力支持。

环境监测中离子色谱法的应用分析

随着环境污染问题的日益严重,有效的环境监测技术成为当代科学研究的重要内容。离子色谱法作为一种高效、准确的分析技术,在环境监测中扮演着重要角色。本文深入探讨离子色谱法在水质监测、土壤分析及大气污染物检测中的应用,并对其技术优势与面临的挑战进行全面分析。通过实例分析,展示离子色谱法在环境监测中的有效性,同时指出其应用过程中的局限性和未来发展方向。研究结果表明,离子色谱法是环境监测中不可或缺的技术之一,对于推动环境保护和进行污染控制具有重要意义。

水环境监测与污水处理技术分析

水环境监测与污水处理技术是维护水质安全和水生态平衡的重要手段。本文首先探讨了水环境监测的重要性,随后对当前的水环境监测技术和污水处理技术进行了详细分析,并对这些技术在实际应用中的现状进行了评价,对未来的发展趋势做出了预测。最后,本文得出结论,指出了水环境监测与污水处理技术发展的必要性及其在环境保护中的重要作用。

新时期南水北调中线工程水源地水质监测体系建设构想

构建与国家战略水源地相适应的中线水源工程水质安全保障体系是新时期南水北调工程运行管理的重要内容。基于丹江口库区及其上游流域水质监测的新需求和新目标,提出了构建新时期南水北调中线工程水源地监测站网、水质监测、风险防范、科技支撑四大体系的建设构想,阐述了体系的基本内涵和要义。“四大体系”将在全面覆盖、关键预警、智慧先进、立体感知、重点监控、科技研究等方面对水质监测体系进行改造与提升,保障“一泓清水永续北上”。

城市排水系统水、气、泥监测方案优化及数据应用

现阶段排水管理运行部门在制定年度排水系统的水、气、泥监测方案时主要以满足各项污染物排放标准为主,仅能履行监管职责,未能对排水系统本身的运行优化决策提供决定性的技术依据。文章对城市排水系统引起环境污染的情况进行了梳理,结合一系列案例及数据论证,对城市污水处理厂、防汛泵站及输送泵站对环境影响的监测方案提出优化建议,介绍了污染发生后应采取的污染源溯源排摸方法及相关特征因子的检测,提出在进行环境监测的同时可适当引入职业健康安全特征性指标监测的想法,并对监测结果数据的实际应用及排水系统运行可采取的相应改进措施进行了论述,意在为排水运行管理部门履行监管职责时提供相应思路和技术支撑,提高监测工作的实际应用价值。

2021—2023年郴州市地表水水质状况分析

为了解郴州市地表水的水质状况,分析郴州市在2021—2023年的水质监测数据,全面评估郴州市的水质变化趋势、空间分布特征及潜在的环境健康风险。结果显示,2021—2023年,郴州市地表水质量显著改善,优良水质(Ⅰ~Ⅲ类)比例逐年上升至100%,且在2022年消除了Ⅳ类及以下水质断面,其中Ⅰ、Ⅱ类水质占比显著提升。通过对比分析各县(市、区)的水质指数,发现地表水水质整体向好,但局部区域,如临武县和北湖区,仍面临水质波动较大的问题。相关研究结论揭示了郴州市水质改善措施的有效性与地域差异性,为制定水资源保护策略提供了科学依据。

连续流动分析法测定水中挥发酚和总氰化物的实验探究

挥发酚和总氰化物是水质监测和水环境保护的关键指标,其准确测定对评估水体质量和环境影响至关重要。随着检测技术的发展,采用在线前处理的流动注射分析法和连续流动分析法已成为其主流的检测手段。而我国尚未制定水中氰化物(除生活饮用水外)的连续流动—分光光度法国家或行业标准,为水质样品中氰化物的准确监测带来不便。本研究通过控制变量法,系统研究了试剂pH及浓度等因素对检测结果的影响,筛选出了合适的检测条件。该方法的测试结果呈现完全线性相关,挥发酚和总氰化物检出限低至0.279μg/L和0.118μg/L,样品加标回收率达到95.0%~105%。本研究不仅为水质挥发酚和氰化物的国家和行业标准制定提供了经验和依据,还为水质监测领域引入了一种更环保的方法。