Journal of Environmental Monitoring (J ENVIRON MONITOR )

Publisher: Royal Society of Chemistry (Great Britain)

Description

Modern instrumentation has allowed us to push back the frontiers of detection such that we are able to determine incredibly small amounts of natural and anthropogenic pollutants and contaminants in our environment, whether they are in our homes, workplaces, cities, the countryside or the oceans. The fact that we can detect these pollutants in minuscule amounts does not necessarily mean that the levels present in the environment are harmful to our health or well being, but it does drive world-wide legislation on these substances. Therefore, there is a requirement to monitor, ascertain the sources, prevent the release, develop better detection methods and make properly assessed scientific judgements on the toxicity, exposure and risk assessment of the pollutants to which we are exposed in our daily lives. The Royal Society of Chemistry has recognised the importance of these 21st century requirements and that it is essential to promote and disseminate the knowledge of newly developed technologies for monitoring our various environments. Therefore, they have launched the Journal of Environmental Monitoring (JEM) which is dedicated to assessing exposure and health risks through the latest developments in measurement science. The first issue of the journal was published in February 1999 and subsequent issues will be published bimonthly thereafter. JEM is unique in that it aims to publish all the relevant information on this subject area in one source. This journal is intended for environmental and health professionals in industry and officials from governmental and regulatory agencies as well as research scientists interested in the environment.

  • Impact factor
    2.09
    Show impact factor history
     
    Impact factor
  • 5-year impact
    2.14
  • Cited half-life
    5.10
  • Immediacy index
    0.32
  • Eigenfactor
    0.01
  • Article influence
    0.64
  • Website
    Journal of Environmental Monitoring website
  • Other titles
    Journal of environmental monitoring, JEM
  • ISSN
    1464-0325
  • OCLC
    41043780
  • Material type
    Periodical, Internet resource
  • Document type
    Journal / Magazine / Newspaper, Internet Resource

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: The study of microorganisms and biological particulate matter that transport passively through air is very important for an understanding of the real quality of air. Such monitoring is essential in several specific areas, such as public health, allergy studies, agronomy, indoor and outdoor conservation, and climate-change impact studies. Choosing the suitable monitoring method is an important step in aerobiological studies, so as to obtain reliable airborne data. In this study, we compare olive pollen data from two of the main air traps used in aerobiology, the Hirst and Cour air samplers, at three Tunisian sampling points, for 2009 to 2011. Moreover, a downscaling method to perform daily Cour air sampler data estimates is designed. While Hirst air samplers can offer daily, and even bi-hourly data, Cour air samplers provide data for longer discrete sampling periods, which limits their usefulness for daily monitoring. Higher quantities of olive pollen capture were generally detected for the Hirst air sampler, and a downscaling method that is developed in this study is used to model these differences. The effectiveness of this downscaling method is demonstrated, which allows the potential use of Cour air sampler data series. These results improve the information that new Cour data and, importantly, historical Cour databases can provide for the understanding of phenological dates, airborne pollination curves, and allergenicity levels of air.
    Journal of Environmental Monitoring 05/2014;
  • [Show abstract] [Hide abstract]
    ABSTRACT: In this study, multi-walled carbon nanotubes (MWNTs) were employed to remove benzene, toluene, ethylbenzene, and xylenes (BTEX) from low and high salinity waters pre-equilibrated with crude oil. The treatment endpoint of crude oil-contaminated water is often controlled by BTEX compounds owing to their higher aqueous solubility and human-health toxicity compared to other hydrocarbons. The MWNTs sorbent was extensively characterized and the depletion of organic sorbate from the produced waters was monitored by gas chromatography-mass spectrometry (GC-MS) and total organic carbon (TOC) analyses. The equilibrium sorptive removal of BTEX followed the order: ethylbenzene/ o-xylene > m-xylene > toluene > benzene in the presence of other competing organics in produced water. Sorption mechanisms were explored through the application of a variety of kinetics and equilibrium models. Pseudo 2nd order kinetics and Freundlich equilibrium models were best at describing BTEX removal from produced water. Hydrophobic interactions between the MWNTs and BTEX, as well as the physical characteristics of the sorbate molecules, were regarded as primary factors responsible for regulating competitive adsorption. Salinity played a critical role in limiting sorptive removal, with BTEX and total organic carbon (TOC) removal falling by 27% and 25%, respectively, upon the introduction of saline conditions. Results suggest MWNTs are effective at removing risk-driving BTEX compounds from low-salinity oilfield produced waters.
    Journal of Environmental Monitoring 01/2014;
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    ABSTRACT: The interconversion of carbon in organic, inorganic and refractory carbon is still beyond the grasp of present environmentalists. The bacteria and their phages being the most abundant constituents of the aquatic environment, represents an ideal model for studing carbon regulation in aquatic system. The refractory dissolved organic carbon (DOC) a recently coined terminology from the microbe-driven conversion of bioavailable organic carbon into difficult-to-digest refractory DOC by microbial carbon pump (MCP) is suggested to have potential to revolutionize our view of carbon sequestration. It is estimated that about 95% of organic carbon is in the form of refractory DOC which is the largest pool of organic matter in the ocean. The refractory DOC is supposed to be the major factor in the global carbon cycle whose source is not yet well understood 1, 3, 4. A key element of the carbon cycle is the microbial conversion of dissolved organic carbon into inedible forms. The time studies of phage-host interaction under control conditions reveals their impact on the total carbon content of the source and their interconversion among organic, inorganic and other forms of carbon with respect to control source 1, 2, 3, 4. The TOC- analysis statistics stipulate increase in inorganic carbon content by 15-25 percent in the sample with phage as compared to sample without phage. The results signify 60-70 fold increase in inorganic carbon content in sample with phage, whereas, 50-55 fold in the case of sample without phages as compared with control. This increase in inorganic carbon content may be due to lysis of the host cell releasing its cellular constituents and utilization of carbon constituent for phage assembly and development. It also proves the role of phages in regulating the carbon flow in the aquatic systems like oceans where their concentration outnumbered other species.
    Journal of Environmental Monitoring 01/2011;
  • Journal of Environmental Monitoring 01/2010; 12:1451-1458.
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    ABSTRACT: The chemical composition of airborne particulate matter ( PM) was studied at a coastal region near De Haan, Belgium, during a winter-spring and a summer campaign in 2006. The major ionic components of size-segregated PM, i.e. NH(4)(+), Na(+), K(+), Mg(2+), Ca(2+), Cl(-), NO(3)(-), and SO(4)(2-), and related gaseous pollutants (SO(2), NO(2), NH(3), HNO(2), and HNO(3)) were monitored on a daily basis. Air mass backward-trajectories aided in evaluating the origin of the diurnal pollution load. This was characterised with high levels of fine secondary inorganic aerosols (NH(4)(+), NO(3)(-), and non-sea-salt SO(4)(2-)) for continental air masses, and sea-salts as the dominant species in coarse maritime aerosols. Seasonal variations in the level of major ionic species were explained by weather conditions and the release of dimethyl sulfide from marine regions. This species was responsible for an increased sea-salt Cl(-) depletion during summer (56%), causing elevated levels of HCl. Neutralisation ratios for the coarse fraction (0.6-0.8) suggested a depleted NH(4)(+) level, while that for the fine fraction (1.1-1.3) had definitely an excess of NH(4)(+), formed by the neutralisation of HCl. The results of factor analysis and the extent of SO2 oxidation indicated that the major ionic species originated from both local and remote sources, classifying the Belgian coastal region as a combined source-receptor area of air pollution.
    Journal of Environmental Monitoring 01/2009; 11(3):670-677.
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    ABSTRACT: This study investigated the contribution of unburned lubricating oil and gasoline-derived n-alkanes to particulate emission from non-catalyst and catalyst-equipped two-stroke (2-S) mopeds operated with ester-based, fully synthetic lubricating oil. Exhaust particulate matter (PM) from ten 2-S, 50 cm3 mopeds belonging to three different levels of emission legislation (EURO-0, EURO-1 and EURO-2) was collected during the sampling phase of the ECE 47 driving cycle through which each mopeds was driven on a dynamometer bench. Filters containing PM were extracted with an accelerated solvent extractor and analysed by gas-chromatography/mass spectrometry. The contribution of unburned lubricating oil to the PM was ascertained and quantified by exploiting characteristic ions in its mass spectrum. The experimental results show that unburned lubricating oil accounted for a significant fraction (4.7-38.7%) of the PM emitted from 2-S mopeds. Emission rates of particulate unburned lubricating oil and n-alkanes from non-catalyst EURO-0 mopeds were 15.4-56.2 mg km(-1) and 1-2 mg km(-1), respectively. These emission rates were reduced of 75% and 88%, respectively, for catalyst-equipped EURO-1 mopeds. The results of the tests carried out on two EURO-2 mopeds of different technology were contrasting. A EURO-2 moped with carburettor and secondary air injection exhibited a clear reduction of 95% and 88% for unburned lubricating oil and n-alkanes emission rates with respect to the average values observed for EURO-1 mopeds. On the other hand, the second EURO-2 moped, equipped with catalyst and direct injection, had unburned lubricating oil emission rates roughly in the range of EURO-0 mopeds while particulate n-alkanes were emitted at rates comparable with typical values observed for catalyst EURO-1 mopeds.
    Journal of Environmental Monitoring 11/2008; 10(10):1202-10.