Abstract:
:Urban areas are facing increasing fog frequencies that may result due to increased air pollution emanating from variety of sources. The increased pollution levels may lead to the atmospheric reactions resulting into the formation of secondary pollutants that may also lead to increased aerosol number concentrations (ANC) in the atmosphere. This could cause enhanced water aerosols in the presence of favourable meteorological conditions and high relative humidity. This study deals with the atmospheric pollution and visibility during winter season of megacity Delhi in order to assess the relationship between the two specifically during fog episodes. Thus, this study analyses the levels of air pollutants, aerosol spectrum and meteorological conditions during one week each in the winter season of the years 2004 and 2006 in order to have an improved understanding of their role in fog formation in mega-city Delhi. More than 300 h of measurements which included episodes of dense, thick and moderate fogs of about 25 h, were studied. The measurements cover most of the accumulation mode and greater size spectrum of aerosols. Thus, the analysis is performed for the entire period, specifically, before the fog sets up, during and afterwards. In general, the relatively small variations in number concentration show larger variations in visibility prior and post dense fog formation than during dense fog episodes. Preliminary analysis of monthly averaged RSPM (Respirable Suspended particulate Matter or PM(10)) concentration values for four winter months for a period of 6 years (1996-2001) and visibility did not show a good correlation with total occurrences of fog. However, daily averaged RSPM concentration showed a good correlation with the occurrences of thick fog. Diurnal variation of Sulfur-dioxide and Nitrogen dioxide were found to have inverse relationship with visibility during fog which may be due to formation of secondary pollutants such as sulfate and to a lesser extent nitrates. Amongst, the daily averaged concentrations of all the criteria pollutants, RSPM was found to be best correlated with the fog in comparison to other pollutants.
journal_name
Environ Monit Assessjournal_title
Environmental monitoring and assessmentauthors
Mohan M,Payra Sdoi
10.1007/s10661-008-0268-8subject
Has Abstractpub_date
2009-04-01 00:00:00pages
265-77issue
1-4eissn
0167-6369issn
1573-2959journal_volume
151pub_type
杂志文章abstract::Heavy metal (Fe, Mn, Zn, Cu, Ni, Pb, and Cd) concentrations and their chemical speciations were investigated for the first time in bed sediments of Bharali River, a major tributary of the Brahmaputra River of the Eastern Himalayas. Levels of Fe, Mn, Pb, and Cd in the bed sediments were much below the average Indian ri...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-010-1647-5
更新日期:2011-06-01 00:00:00
abstract::Pararosaniline hydrochloride (CPR) is a dye used for colouring paper, leather and natural and artificial fibres. It is also used in analytical and microbiological laboratories. It is a carcinogenic substance of category 1B. In analytical chemistry, it is used for detecting the following among others: bromates, formald...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-019-7568-z
更新日期:2019-06-17 00:00:00
abstract::The current study aimed to assess the quality of apportion pollution sources and examine the impacts of anthropogenic activities on groundwater. The study was implemented in two sequential steps of (1) bulk examination of groundwater quality followed by principal component analysis/factor analysis (PCA/FA) to apportio...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-020-08331-0
更新日期:2020-05-26 00:00:00
abstract::Achieving better monitoring and radiation risk assessment is among the main issues in environmental studies. In this regard, natural radioactivity measurements in sediments can provide useful information about the environmental transport mechanism and about the sources of radionuclides. Anzali wetland, as the study ar...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-019-7516-y
更新日期:2019-05-22 00:00:00
abstract::The rapid evolution of mobile phone technology has raised public concern about its possible association with adverse health effects. Given the huge number of mobile phone users at present days, even simple adverse health effects could have major implications. This article reviews the present knowledge concerning the h...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-016-5227-1
更新日期:2016-04-01 00:00:00
abstract::The quality of sewage-sludge samples obtained in Kolkata region was evaluated. Both sewage water and sludge components were analyzed for a number of physico-chemical, microbiological parameters using standard laboratory procedures, some heavy metals by AAS method and pesticide contents by GC method. Some of the physic...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-008-0447-7
更新日期:2009-08-01 00:00:00
abstract::We analyzed the total (Zn, Pb, Ni, Hg, Cr, Cd, Cu, As) and partially leachable metals (PLMs) in 25 ash and soil samples from recent (2012-2013) eruptions of the Popocatépetl Volcano in Central Mexico. More recent ash and soil samples from volcanic activity in 2012-2013 had higher metal concentrations than older sample...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-015-4938-z
更新日期:2015-11-01 00:00:00
abstract::Understanding the relationship between landscape characteristics and water quality is critically important for estimating pollution potential and reducing pollution risk. Therefore, this study examines the relationship between landscape characteristics and water quality at both spatial and temporal scales. The study t...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-015-4349-1
更新日期:2015-03-01 00:00:00
abstract::Five priority areas of potential impact by contaminants (API) were investigated at the Presidente Bernardes Refinery in Cubatão, São Paulo, Brazil with the following aims: (i) to identify both organic and inorganic contaminants present in soil and groundwater; (ii) to define the environmental conditions relevant for m...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-006-7243-z
更新日期:2006-05-01 00:00:00
abstract::This comment highlights a whole series of datasets on thallium concentrations in the environment that were overlooked in the recent review by Karbowska, Environmental Monitoring and Assessment, 188, 640, 2016 in this journal. Geochemical surveys carried out over the last few decades all over the world at various scale...
journal_title:Environmental monitoring and assessment
pub_type: 评论,杂志文章
doi:10.1007/s10661-017-5945-z
更新日期:2017-05-01 00:00:00
abstract::Changes in forest landscapes resulting from road construction have increased remarkably in the last few years. On the other hand, the sustainable management of forest resources can only be achieved through a well-organized road network. In order to minimize the environmental impacts of forest roads, forest road manage...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-012-2666-1
更新日期:2013-02-01 00:00:00
abstract::Surface mining represents the dominant driver of land coverage changes in the Jiu Valley mining area in Romania. Detecting and quantifying active mines and reclaimed areas are very important tasks given the effects of surface mining on the environment. In this paper, Landsat imagery for the years 1988, 1998, 2008, and...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-020-08834-w
更新日期:2021-01-05 00:00:00
abstract::In the last 20 years, increasing dissolved organic carbon (DOC) concentrations have been observed in several rivers and lakes in Europe. This increase has reduced the quality of the aquatic environment. In this study, UV-vis spectroscopy and synchronous fluorescence spectroscopy with a difference of 50 nm between the ...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-015-4422-9
更新日期:2015-04-01 00:00:00
abstract::This study investigated the biomarker responses of the earthworm, Eudrilus eugeniae, exposed to sublethal concentrations of benzene, toluene and xylene (BTX) for a time span of 28 days. Lipid peroxidation (LPO) and histopathological alterations were examined. Toxicological evaluations of BTX were carried out against E...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-012-2700-3
更新日期:2013-03-01 00:00:00
abstract::An anoxic biofilm involved in continuous denitrification process was monitored to investigate the effect of different concentrations of influent dissolved oxygen (DO) or nitrite on the biofilm. Microelectrode measurements evidenced nitrate removal activity of biofilm. When different concentrations of DO were applied t...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1023/a:1024698131900
更新日期:2003-09-01 00:00:00
abstract::Water quality is a central component of ecological assessments but less well characterized in wetlands than other waterbody types. The 2011 National Wetland Condition Assessment, spanning freshwater and brackish wetlands across the conterminous USA, provided an unprecedented opportunity to examine water quality patter...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-019-7321-7
更新日期:2019-06-20 00:00:00
abstract::Assessing land degradation is essentially needed for decision-makers to monitor and mitigate degradation and implement sustainable land management practices. More specifically, monitoring land degradation on a regular basis enables decision-makers to analyze impact of degradation and effects of sustainable land manage...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-019-7739-y
更新日期:2019-08-15 00:00:00
abstract::In Cambodia, groundwater has been contaminated with arsenic, and purification of the water is an urgent issue. From 2010 to 2012, an international collaborative project between Japan and Cambodia for developing arsenic-removing technology from well water was conducted and supported by the foundation of New Energy and ...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-014-3806-6
更新日期:2014-09-01 00:00:00
abstract::Semipermeable membrane devices (SPMDs) were deployed in streams along a gradient of urban land-use intensity in and around six metropolitan areas: Atlanta, Georgia; Raleigh-Durham, North Carolina; and Denver-Fort Collins, Colorado, in 2003; and Dallas-Fort Worth, Texas; Milwaukee-Green Bay, Wisconsin; and Portland, Or...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-008-0546-5
更新日期:2009-10-01 00:00:00
abstract::Hourly measurements of radon level at four houses in Butte, Montana were analyzed. Previous studies suggestes that there are diurnal cycles, spectral analysis confirms this assertion. Moreover, there are also long term trends and weekly cycles at certain locations. The periodical cycles highly suggest that indoor rado...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/BF00398735
更新日期:1989-08-01 00:00:00
abstract::Garhwal Himalaya in northern India has emerged as one of the most prominent hot spots of landslide occurrences in the Himalaya mainly due to geological causes related to mountain building processes, steep topography and frequent occurrences of extreme precipitation events. As this region has many pilgrimage and touris...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-015-4535-1
更新日期:2015-06-01 00:00:00
abstract::Over the past decade, an increased tendency to consume meals at dining facilities outside the home has been highlighted; moreover, meals supplied in food businesses have been involved in many foodborne disease outbreaks. Therefore, microbial air contamination in food processing facilities could be a concern and an inc...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-012-2903-7
更新日期:2013-06-01 00:00:00
abstract::Blended water, always existing in a drinking water distribution system (DWDS) with different sources, can cause some unintended results, including corrosion and/or release of corrosion by-products. Although some studies have specially focused on the blended water in DWDSs, the water quality characteristics, variations...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-018-6901-2
更新日期:2018-08-16 00:00:00
abstract::The heavy metal levels in six walnut cultivars from five geographical zones of Iran were measured. An assessment of risks was conducted by calculating the Target Hazard Quotient (THQ) and Incremental Lifetime Cancer Risk (ILCR) by use of the Monte Carlo simulation method. The highest amounts of As and Pb were reported...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-020-08551-4
更新日期:2020-08-27 00:00:00
abstract::This paper deals with the solid waste image detection and classification to detect and classify the solid waste bin level. To do so, Hough transform techniques is used for feature extraction to identify the line detection based on image's gradient field. The feedforward neural network (FFNN) model is used to classify ...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-014-3786-6
更新日期:2014-09-01 00:00:00
abstract::Seed germination is considered a critical phase in plant development and relatively sensitive to heavy metals. White poplar (Populus alba) trees tend to accumulate Cd and Zn in their tissues. We tested if soil contamination can affect P. alba progeny, reduced seed germination and explored the distribution of mineral e...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-015-4893-8
更新日期:2015-11-01 00:00:00
abstract::Accurate and updated time series maps of paddy rice distribution and planting intensity will greatly improve our knowledge. Unfortunately, spatiotemporal explicit information on rice fields is relatively limited, and considerable uncertainties still exist as regards to its inter-annual variations in China. In this stu...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-015-5004-6
更新日期:2016-01-01 00:00:00
abstract::The use of dispersed catalysts in aqueous medium inside reactors in advanced oxidative processes is common among researchers. However, due to the difficult separation of these species after treatment, in many cases, the treatment process is unfeasible. In this context, the main target of the work was the evaluation of...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-019-7452-x
更新日期:2019-05-05 00:00:00
abstract::Uses of wastewater drives significant economic activity, supports countless livelihoods particularly those for developing countries. While using wastewater, the challenge is to identify practical, affordable safeguards that do not threaten the health of users. In Yanbu Al-Sinaiyah, treated sewage effluent (TSE) is use...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-010-1564-7
更新日期:2011-05-01 00:00:00
abstract::Low-frequency grab sampling cannot capture fine dynamics of stream solute concentrations, which results in large uncertainties in load estimates. The recent development of high-frequency sensors has enabled monitoring solute concentrations at sub-hourly time scales. This study aimed to improve nitrate (NO3) load estim...
journal_title:Environmental monitoring and assessment
pub_type: 杂志文章
doi:10.1007/s10661-018-6700-9
更新日期:2018-05-07 00:00:00