The effect of resource-saving tillage technologies on the mobility, distribution and migration of trace elements in soil

2022 ◽  
Author(s):  
Anna M. Medvedeva ◽  
Olga A. Biryukova ◽  
Alexey V. Kucherenko ◽  
Yaroslav I. Ilchenko ◽  
Tatiana M. Minkina ◽  
...  
Keyword(s):  
Trace Elements ◽  
Resource Saving ◽  
And Migration

Trace elements in skin-contact clothes and migration to artificial sweat: Risk assessment of human dermal exposure

2016 ◽  
Vol 87 (6) ◽  
pp. 726-738 ◽  
Author(s):  
Joaquim Rovira ◽  
Martí Nadal ◽  
Marta Schuhmacher ◽  
José L Domingo
Keyword(s):  
Trace Elements ◽  
Health Risks ◽  
Hazard Quotient ◽  
Dermal Exposure ◽  
Environmental Scanning ◽  
Potential Health ◽  
Skin Contact ◽  
Artificial Sweat ◽  
High Concentrations ◽  
And Migration

The concentrations of a considerable number of trace elements (Ag, Al, As, B, Ba, Be, Bi, Cd, Co, Cr, Cu, Fe, Hg, Mg, Mn, Mo, Ni, Pb, Sb, Sc, Se, Sm, Sn, Sr, Ti, Tl, V and Zn) were determined in various skin-contact clothes (T-shirts, blouses, socks, baby pajamas and bodies) from the Catalan (Spain) market. In addition, migration experiments with artificial acidic sweat were conducted in order to establish the migration rates of these elements. High levels of Zn (186–5749 mg/kg) were found in zinc pyrithione labeled T-shirts, while high concentrations of Sb and Cr were found in polyester and black polyamide fabrics, respectively. An environmental scanning electron microscope (ESEM) confirmed the presence of Ag and Ti particles and aggregates in several clothing items. The use of the ESEM complemented the results of the elemental analysis and migration experiments. Dermal exposure to trace elements was subsequently calculated, and the human health risks were assessed. Antimony showed the highest mean hazard quotient (HQ = 0.4) for male and female adults wearing polyester clothes; for one of the examined items (polyester T-shirt) the HQ was even above the safety limit (HQ > 1). Exposure to Sb from polyester textile could mean potential health risks in subpopulation groups who frequently wear these clothes, and for long time periods. The migration experiments with artificial sweat showed to be essential for establishing the exposure to trace elements through cloth with direct contact with skin.

Use of biomarkers, porphyrins, and trace elements to assess the origin, maturity, biodegradation, and migration of Alturitas oils in Venezuela

Fuel ◽  
2012 ◽  
Vol 97 ◽  
pp. 186-196 ◽  
Author(s):  
M. Escobar ◽  
G. Márquez ◽  
V. Azuaje ◽  
A. Da silva ◽  
R. Tocco
Keyword(s):  
Trace Elements ◽  
And Migration

Origin and migration of trace elements in the surface sediments of Majuro Atoll, Marshall Islands

Chemosphere ◽  
2018 ◽  
Vol 202 ◽  
pp. 65-75 ◽  
Author(s):  
Lisa Ito ◽  
Takayuki Omori ◽  
Minoru Yoneda ◽  
Toru Yamaguchi ◽  
Ryuta Kobayashi ◽  
...  
Keyword(s):  
Trace Elements ◽  
Surface Sediments ◽  
Marshall Islands ◽  
And Migration

scholarly journals Effects of Different Particle Sizes of Hydroxyapatite on the Distribution and Migration of Trace Elements (Copper and Cadmium) in a Smelter-Impacted Soil

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Lei Xu ◽  
Xiangyu Xing ◽  
Zhenqiu Zhu ◽  
Hongbiao Cui ◽  
Jianbiao Peng ◽  
...  
Keyword(s):  
Trace Elements ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Ph ◽  
Particle Sizes ◽  
In Situ Experiment ◽  
Soil Colloid ◽  
Cd Distribution ◽  
And Migration

To study the remediation effect of hydroxyapatite with different particle sizes, a field in situ experiment was carried out by adding conventional hydroxyapatite (0.25 mm) and microhydroxyapatite (3 μm) and nanohydroxyapatite (40 nm) to the contaminated soil and planting Elsholtzia splendens. The distribution and migration of copper (Cu) and cadmium (Cd) in soil were investigated after 4 years. The results show that the application of three different particle sizes of hydroxyapatite significantly raise the soil pH, total phosphorus, and soil organic carbon. Moreover, the addition of hydroxyapatite can reduce the EXC fraction of Cu and Cd by 73.7%–80.1% and 20.8%–35.2%, respectively. In addition, the concentrations of Cu and Cd in >2 mm, 0.25–2 mm, 0.053–0.25 mm, and <0.053 mm aggregate are significantly increased. This improvement indicates that there are risks which may cause the increasing of total Cu and Cd in the soil where the pollution sources still exist. Furthermore, the content of soil colloid is significantly increased, and the colloidal Cu and Cd distribution percentage have been significantly increased by 49.9%–120% and 30.3%–181%. This result illustrates that the application of hydroxyapatite may greatly increase the possibility of colloid and dust migration of Cu and Cd.

СОДЕРЖАНИЕ И ФОРМЫ СУЩЕСТВОВАНИЯ МЕДИ И ЦИНКА В ВОДЕ И ДОННЫХ ОТЛОЖЕНИЯХ

2020 ◽  
pp. 6
Author(s):  
G.Yu. Tolkachev ◽  
T.A. Iliina
Keyword(s):  
Trace Elements ◽  
Copper Content ◽  
Natural Waters ◽  
Ecological Role ◽  
Migration Ability ◽  
Chemical Conditions ◽  
And Migration ◽  
Maximum Allowable Concentrations ◽  
Physical And Chemical ◽  
Secondary Contamination

Донные отложения являются адсорбентом загрязняющих веществ, в частности микроэлементов, и могут содержать их в количествах, значительно превышающих предельно-допустимые концентрации. Распределение и миграция металлов контролируются в основном характером взаимодействия донных отложений, водной массы и биоты при этом возникает опасность вторичного загрязнения при взмучивании и десорбции в результате изменения физико-химических условий в системе вода-дно . Рассмотрены особенности содержания, миграции и трансформации меди (Cu) и цинка (Zn) в системе водадонные отложения . Выбор обусловлен следующим: Cu относится к высокому классу опасности, при этом отличается высокой химической и биологической активностью, а Zn отличается высоким содержанием в различных экосистемах. Соединения данных элементов не подвергаются деструкции в природных водах, а лишь изменяют формы существование в них, что приводит к изменению их миграционной способности, токсических свойств, доступности для гидробионтов и их экологической роли в водных объектах.Sediments are the adsorbent of contaminants, in particular trace elements, and can contain them in quantities well above the maximum allowable concentrations. The distribution and migration of metals are controlled mainly by the interaction of sediments, water mass and biota andthere is a risk of secondary contamination during torture and desorption as a result of changes in physical and chemical conditions water-bottom system. The specifics of copper content, migration and transformation copper (Cu) and zinc (Zn) in the water-sediment system are considered. The choice is based on the following: Cu belongs to a high danger class, with high chemical and biological activity, and Zn is high in different ecosystems. The compounds of these elements are not subject to destruction in natural waters, but only change the forms of existence in them, which leads to a change in their migration ability, toxic properties, accessibility for hydrobionts and their ecological role in water facilities.

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