scholarly journals Review of recent findings on occurrence and fates of siloxanes in environmental compartments

2021 ◽  
Vol 224 ◽  
pp. 112631
Author(s):  
Xiaoling Xiang ◽  
Nannan Liu ◽  
Lin Xu ◽  
Yaqi Cai
2000 ◽  
Vol 41 (2) ◽  
pp. 55-59 ◽  
Author(s):  
J. Fettig ◽  
M. Miethe ◽  
K. Rathke

For ten years, the Division of Applied Science, University of Paderborn, has gained experience with a four-year undergraduate environmental engineering programme. Up to now, more than 400 graduates have successfully entered a professional career, proving that the educational concept is accepted by the employment sector, e.g. consultants, industry and authorities. Important aspects of this concept are the combination of civil engineering - as a core engineering field - with natural environmental sciences in the basic studies, the coverage of all environmental compartments in the main studies before specialisation in one area, and a strong practical component of the curriculum both inside and outside the university.


2021 ◽  
Vol 756 ◽  
pp. 144086
Author(s):  
Sarah Montesdeoca-Esponda ◽  
María Esther Torres-Padrón ◽  
Zoraida Sosa-Ferrera ◽  
José Juan Santana-Rodríguez

2021 ◽  
pp. 111373
Author(s):  
Bashir Adelodun ◽  
Fidelis Odedishemi Ajibade ◽  
AbdulGafar Olatunji Tiamiyu ◽  
Nathaniel Azubuike Nwogwu ◽  
Rahmat Gbemisola Ibrahim ◽  
...  

2015 ◽  
Vol 8 (2) ◽  
pp. 33-45 ◽  
Author(s):  
K.M. Kasiotis ◽  
K. Machera

Summary Neonicotinoids (NNDs) constitute a major class of insecticides with a broad and versatile spectrum of applications in agriculture. Hence, their residues are found in several environmental compartments and can be transferred via several pathways to numerous organisms. Despite their profound impact on honeybees and wild bees (impairment of memory, impact on immune system), their presence in humans is far less reported, possibly due to the low to moderate toxicological effects that they elicit. The aim of the present review is to emphasize on developments in the biomonitoring of NNDs. It focuses mainly on chromatographic analysis of NNDs and their metabolites in human biological fluids, discussing key features, such as sample preparation and analytical method validation. Nonetheless, case reports regarding intoxication incidents are presented, highlighting the significance of such cases especially in the developing world.


2017 ◽  
Vol 605-606 ◽  
pp. 66-74 ◽  
Author(s):  
Danielle Regina Gomes Ribeiro ◽  
Henrique Faccin ◽  
Thaís Ramos Dal Molin ◽  
Leandro Machado de Carvalho ◽  
Lílian Lund Amado

Author(s):  
Md. Isreq Hossen Real ◽  
Asef Redwan ◽  
Md. Mosheur Rahman Shourov ◽  
Hossain Azam ◽  
Nehreen Majed

1996 ◽  
Vol 68 (9) ◽  
pp. 1771-1780 ◽  
Author(s):  
K. Ballschmiter

The relationship between physicochemical properties, environmental distribution and effects of organochlorine compounds as a major class of persistent organic pollutants (POPs) are discussed. The environmental fate of a compound includes its transport and dispersion in the environment as well as its accumulation and transformation in defined environmental compartments. Accumulation and transformation as the result of environmental distribution may have long-term consequences; this is indicated by the ultimate accumulation and long-term bioactivity of several widely spread organochlorines, and is clearly evident in the decomposition of chlorofluorocarbons in the stratosphere.Depending on the order of trophic levelsbiomagnifiaction factors of 10,000 up to 100,000 are encountered for persistentsemivolatile organochlorines such as 4,4'-DDE, PCB congeners or some Toxapheneconstituents. Mammals show intra-species pollutant transfer during thelactation period. While the mother animal is partly depleting its bodyburden, the calve accumulates in a critical period of its life via themilk a concentrated input of persistent organochlorines. A similar depletionphenomenon is also found for fish and crustacean which enrich in the eggsa substantial part of the accumulated body burden of the female.The air skimming of semivolatiles by plantsurfaces leads to surprisingly high levels of pollutants in the uppersoil layers of forests that otherwise would be considered pristine interms of human activities.


2019 ◽  
Vol 21 (15) ◽  
pp. 3994-4013 ◽  
Author(s):  
P. Tomkins ◽  
T. E. Müller

Propositioning carbon to be seen a valuable resource, pathways towards establishing anthropogenic carbon cycles are outlined based on systematic analysis of the carbon inventory and fluxes throughout the different environmental compartments on earth.


Radiocarbon ◽  
2019 ◽  
Vol 61 (5) ◽  
pp. 1461-1476 ◽  
Author(s):  
C Espic ◽  
M Liechti ◽  
M Battaglia ◽  
D Paul ◽  
T Röckmann ◽  
...  

ABSTRACTMethane contributes substantially to global warming as the second most important anthropogenic greenhouse gas. Radiocarbon (14C) measurements of atmospheric methane can be used as a source apportionment tool, as they allow distinction between thermogenic and biogenic methane sources. However, these measurements remain scarce due to labor-intensive methods required. A new setup for the preparation of atmospheric methane samples for radiocarbon analysis is presented. The system combines a methane preconcentration line with a preparative gas chromatography technique to isolate pure methane samples for a compound-specific radiocarbon analysis. In order to minimize sample preparation time, we designed a simplified preconcentration line for the extraction of methane from 50 L atmospheric air, which corresponds to 50 µg C as required for a reliable 14C analysis of methane-derived CO2 gas measurement with accelerator mass spectrometry (AMS). The system guarantees a quantitative extraction of methane from atmospheric air samples for 14C analysis, with a good repeatability and a low processing blank. The setup was originally designed for the measurement of samples with low methane concentrations, but it can also be adapted to apportion sources from environmental compartments with high methane levels such as freshwaters or wetlands.


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