Qualitative and Quantitative Screening of Organic Pollutants Associated on Microplastics from Ofanto River (South Italy)

Author(s):  
Claudia Campanale ◽  
Giuseppe Bagnuolo ◽  
Georg Dierkes ◽  
Carmine Massarelli ◽  
Vito Felice Uricchio
Agriculture ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 192 ◽  
Author(s):  
Alessia Restuccia ◽  
Sara Lombardo ◽  
Giovanni Mauromicale

The knowledge of the soil seedbank is crucial to predict the dynamics of weed communities and potential future problems in agroecosystem weed management. Therefore, the aim of this study was to evaluate the qualitative and quantitative variation of the potential and real weed flora as a function of different cultivation systems (namely organic, conventional and uncultivated) in a Mediterranean environment (Sicily, south Italy). The results proved that soil seedbank density was significantly different in superficial (0–10 cm) and deeper soil layers (10–15 cm) in both organic and conventional cultivation systems. Portulacaceae and Amaranthaceae were the dominant botanical families, although they achieved a higher total number of seeds m−2 under a conventional cultivation system than under organic and uncultivated ones. The whole weed flora was represented by 45 taxa, but the presence of the crop reduced the qualitative and quantitative composition of real weed flora. In conclusion, the knowledge of the seedbank size and composition, as well as the variation in time and space of real flora, may contribute to predict the dynamics of weed emergence and their possible interference with crops. In particular, information on the weed dynamics is essential to develop sustainable control protocols, especially under organic farming.


2019 ◽  
Vol 8 (06) ◽  
pp. 39-42
Author(s):  
Oguoma O.I. ◽  
Oguoma L.M.O. ◽  
Nwokediuko I.I. ◽  
Emeka-Nwabunnia I. ◽  
Ezejiofor CC

2019 ◽  
Vol 1 ◽  
pp. 20 ◽  
Author(s):  
Puleng Matatiele ◽  
Lerato Mochaki ◽  
Bianca Southon ◽  
Boitumelo Dabula ◽  
Poobalan Poongavanum ◽  
...  

This report is an overview of requests for biological and environmental monitoring of hazardous chemicals, submitted to the National Institute for Occupational Health, Analytical Services Laboratory for testing from the years 2005 to 2015. The report discusses the nature of tests requested and implications for workers’ health and environment, as well as potential impact of the uncertainties associated with monitoring of hazardous chemicals. This is a retrospective, descriptive, qualitative and quantitative audit of all samples received and tests performed retrieved from records of analysis by the laboratory. The study sample consisted of 44,221 samples. The report indicates that throughout the interrogation period the demand for biological monitoring was higher than that for environmental monitoring, with more requests for toxic metals than organic pollutants. Toxic metal testing was highest for mercury, followed by manganese, lead, aluminium and arsenic. The highest number of tests for organic pollutants was conducted for pesticides followed by toluene and xylene. The study has also revealed that the scope of tests requested is rather narrow and does not reflect the broad spectrum of South Africa’s industrial diversity. Having identified possible reasons for underutilization, a number of reforms that could enhance the laboratory’s performance have been addressed.


Author(s):  
Catherine S F Ho

Purpose – This paper aims to review the Shari’ah investment screening methodologies of 34 prominent global Islamic finance users, including index providers, Shari’ah service providers, Islamic banks, a regulator, an association body and fund managers. Design/methodology/approach – A comparative analysis is performed to highlight the variances of the Shari’ah-compliant methods and principles practiced by these renowned institutions with the latest compiled data. Findings – The two sets of business screens and financial screens are profiled separately to clearly examine the similarities and differences between the different methodologies. Some of these practitioners are more specific in their listing of Shari’ah-impermissible activities, while some are more general in allowing more businesses to be included as permissible. The majority of these users practice a two-tier method of screening: qualitative and quantitative. Under quantitative screen, the range of allowable threshold ratios on non-permissible criteria differs slightly between them. Research limitations/implications – With the wide divergence in screening methodologies applied by practitioners, there is a general consensus in the acceptance of compliant assets from various countries and practice. Standardization is, therefore, seen as a need not only to make understanding of Shari’ah investments clear to investors but also to discourage misunderstandings between scholars and investors. Practical implications – The suggestion, therefore, is to set globally acceptable universal Shari’ah standard methodologies which are applicable by the world Islamic financial market. These standards which are relevant and logical to global ethical investing would further stimulate investments in Islamic finance. Social implications – With Shari’ah-compliant asset growing exponentially relative to the world’s financial assets, it is alleged that greater harmonization of the global screening methods would prevent misunderstanding and provide a clearer insight on Shari’ah investing, which could further accelerate growth of the Islamic finance sector worldwide. Originality/value – To provide a more transparent regulatory environment and build local and regional regulatory framework through establishment of standards, there should be more consistency with minimum barriers that prevent the industry from achieving its full potential. The paper also contributes to existing literature by documenting and analyzing the qualitative and quantitative screening procedures as practiced by a comprehensive set of global Islamic finance users. It is, therefore, important to share this knowledge as an effort toward greater understanding and harmonization of the practices at the global level to accelerate growth in the industry.


2021 ◽  
Vol 11 (17) ◽  
pp. 8177
Author(s):  
Jana Štefániková ◽  
Patrícia Martišová ◽  
Marek Šnirc ◽  
Peter Šedík ◽  
Vladimír Vietoris

The aim of the study was to determine the aroma profiles of four kinds of Slovak honey (sunflower, honeydew, acacia, and linden) by a qualitative and quantitative screening of their volatile compounds and by gas chromatography for the potential use in the aromachology and the business sphere. The results showed that several unique volatiles were identified in one kind of honey, while they were not identified in the remaining ones. The acacia honey had the unique volatile linalool oxide (1.13–3.9%); linden honey had the unique volatiles nerol oxide (0.6–1.6%), ethyl esters (0.41–8.78%), lilac aldehyde D (6.6%), and acetophenone (0.37%). The honeydew honey had the unique volatiles santene (0.28%) and cyclofenchene (0.59–1.39%), whereas 2-bornene (0.43–0.81%) was typical for sunflower honey. While linden honey was characterized by fruity ethyl esters, honeydew honey had more monoterpenoid compounds. In the principal component analysis model, the four kinds of honey could not be differentiated by aroma volatiles. However, it was possible to classify the linden and sunflower honey using the LDA. In conclusion, the current study provided experimental evidence that the marker compounds from different kinds of honey might be promising candidates for production of inhaling aromas.


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