Articles that are unpublished or have not or have been accepted for publication can be submitted for consideration and interest, here.
Examples of unpublished articles can be viewed and commented on:
- This paper describes research work carried out in 1995 and 1998 on the analysis of samples taken from sediment cores extracted from the Yangtse River bank in order to identify/quantify a variety of organic contaminants and to obtain their depth profiles at 1 cm intervals. A collaboration between East China Normal University, Shanghai, PRC and Environmental Science/Chemistry, University of Salford, UK, submitted to JEAC but not published.Ecnupa1h.doc
- A review of this historic work with an update has been now been published in the online journal Current Trends in Analytical and Bioanalytical Chemistry and is subject to copyright ©, by the publisher. The link is http://scholarlypages.org/Articles/analytical-and-bioanalytical-chemistry/ctabc-2-009.php?jid=analytical-and-bioanalytical-chemistry The link for the review of recent investigations is included in the conclusions to the historic study, under supplementary text and supplementary references.
The surface and core sediments obtained from the Yangtze River-south coast estuarine region, and analysed by GC/MS after sample preparation, exhibit a range of organic pollutants over depths from the surface to 0.5 m. The target organic compounds identified are in following categories, homologous series of hydrocarbons, polyaromatic hydrocarbons (PAHs) and linear alkylbenzenes (LABs), Individual compounds -N, N-diethylamide-3-methyl benzamide, phenyl-β-naphthylamine, chlorinated benzenes, 2,6-diisopropyl naphthalene (2,6-DIPN) and compound classes deriving from human waste - sterenes, indicative of sterols.
The PAH concentrations range from 12 μgkg-1 to ca 1.87 mgkg-1, of the order expected. Furthermore, in addition to core sediment, surface sediment (and vegetation) show a surfeit of LABs originating from detergent waste - both domestic and commercial, varying in concentration from 0.2 to 26 mgkg-1. The concentrations of selected individual pollutants determined range from sub gkg-1 to ca 100 mgkg-1 (phenyl-β-naphthylamine).
There is the possibility of hormone mimicking behaviour (endocrinal activity) for compounds originating from human waste at the concentrations observed in intertidal surface sediments ranging from 0.1 to 73 mgkg-1.
The integrity of the sediment in terms of the extent of pollution is considered by comparison with estuarine regions, worldwide.
The analytical methodology for the preparation of sample extracts suitable for analysis by GC/MS is described. The use of the data system for identification via a mass spectral database (NIST) and quantitation via selected analysis of selected single mass ions are outlined. The validity of the data obtained is discussed.
A review of more recent and current investigations is included to complement this historic investigation.