Patterning total mercury distribution in coastal podzolic soils from an Atlantic area: Influence of pedogenetic processes and soil components
نویسندگان
چکیده
• Three main vertical patterns for Hg distribution were observed in ten podzolic soils. Organic matter dynamics and podzolization influenced the observed. The more intense is podzolization, accumulates illuvial horizons. Total organic mainly accounted accumulation surface Al-humus complexes Fe compounds contents Soils are reservoir terrestrial ecosystems where it deposited via wet or dry deposition litterfall. Once on soil surface, different biogeochemical routes will determine fate of role as a source sink. specific chemical physical characteristics Podzols soils contribute to their horizons, avoiding its leaching groundwater. geographical location, state pedogenesis, age, abundance carrier phases properties can affect presence Therefore, understand relate these factors with behavior key define this type cycle. In work, profiles collected an Atlantic coastal forest area Portugal analyzed physico-chemical content assess influence intensity depth distribution. studied Podzols, depending predominance atmospheric have been defined. pattern I showed maximum A horizons (12.9–23.5 µg kg ?1 ), II exhibited highest peaks subsurface (2.3–17.3 ) III presented even through profile. We found that dissolved (DOM) E whereas metal(Al, Fe)-humus and/or oxyhydroxides immobilizing (Bh, Bs Bhs). principal component regression (PCR) analysis predicted satisfactorily Al oxyhydroxides. immobilized layers retained long term, migration other components could cause serious environmental damage such groundwater superficial waters.
منابع مشابه
Potassium in Atlantic Coastal Plain Soils: I. Soil Characterization and Distribution of Potassium
Corn (Zea mays L.) grown on sandy Atlantic Coastal Plain soils is often unresponsive to applications of K fertilizer. As part of a field study on the response of irrigated, intensively managed corn to K applications, we characterized four representative Hapludults from the Delaware Coastal Plain and evaluated their K status. The soils were generally quite sandy with maximum clay contents of 11....
متن کاملInferences from the vertical distribution of Fe isotopic compositions on pedogenetic processes in soils
متن کامل
synthesis of sulfides from alcohols and thiols in solvent-freeconditions and deoxygenation of sulfoxides
کاتالیست یک سنتز جدید برای تیواترها توصیف شده است. واکنش الکل ها با آریل، هتروآریل و آلکیل تیو ل ها درحضور 1،3،5- تری آزو- 2،4،6- تری فسفرین-2،2،4،4،6،6 هگزاکلراید ((tapc به عنوان یک کاتالیست موُثر، بازده های خوب تا عالی از تیواترها را حاصل می کند. علاوه براین، واکنش تحت شرایط بدون فلز و بدون حلال پیش می رود، بنابراین یک مکمل جالب برای روش های شناخته شده سنتز تیواترها ارائه می دهد. یک مکانیسم ا...
15 صفحه اولmorphology, geochemistry, mineralogy, and micromorphology of soils of hormozgan province in relation to parent materials
ویژگی های زمین شیمیایی، کانی شناسی، و میکرومورفولوژیکی خاک ها و سنگ مادر مربوطه در منطقه بین بخش های جنوبی زاگرس و خلیج فارس تا دریای عمان(استان هرمزگان، ایران) مورد بررسی قرار گرفت. هدف های این مطالعه شناسایی تغییرات در خصوصیات فیزیکی، شیمیایی، و ترکیب کانی شناسی خاک، مطالعه میکرومورفولوژی و تکامل خاک، و بررسی توزیع عنصر خاک بر اساس هوازدگی، پروسه های خاک و زمین شناسی جهت توصیف اثرات مواد مادر...
15 صفحه اولdevelopment and implementation of an optimized control strategy for induction machine in an electric vehicle
in the area of automotive engineering there is a tendency to more electrification of power train. in this work control of an induction machine for the application of electric vehicle is investigated. through the changing operating point of the machine, adapting the rotor magnetization current seems to be useful to increase the machines efficiency. in the literature there are many approaches wh...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Catena
سال: 2021
ISSN: ['0008-7769', '1872-6887', '0341-8162']
DOI: https://doi.org/10.1016/j.catena.2021.105540