نتایج جستجو برای: acid extractable contents of zn

تعداد نتایج: 21224592  

M. BAGHERNEJAD S. S. HASHEMI

Zinc (Zn) availability and mobility in soils is controlled by its interaction with the soil matrix and amendments. Contradicting evidence has been reported for factors influencing Zn behavior in soils. The aim of this study was to investigate the Zn sorption in selected acid, calcareous and gypsiferous soils with different background electrolytes (Na+, K+ and H2PO4, NO3 and Cl backgrounds). Iso...

Journal: :Acta poloniae pharmaceutica 2014
Paweł Konieczyński Marek Wesołowski

Phytate phosphorus in 59 samples of herbal teas was determined within the range of 2.44-36.90 microg/mL. Extraction yield was statistically higher in extracts from the leaves than that found in extracts from other plant organs. Average total level of trace elements determined in medicinal herbs follows the order: Fe > Mn > Zn > Cu, for major elements the order is: Ca > Mg > Na > K. Correlation ...

Journal: :مدیریت خاک و تولید پایدار 0
مریم فلاحی مطلق دانشگاه شاهد عبدالامیر بستانی هیات علمی حشمت امیدی دانشگاه شاهد

to evaluate the impact of the application of thehran municipal solid waste compost (mswc) on zinc and copper concentrations in the soil under maize (zea mays. l.) cultivation, a factorial experiment in base randomized complete block design (rcbd) with two different amounts of municipal solid waste compost (zero, 30.15 and 60 t ha-1) and time (compost applied once or twice) was performed with th...

Ali Tavili, Fernando Madrid Gholam Reza Savaghebi Hossein Azarnivand Mahdieh Ebrahimi, Mohammad Jafari

Environmental pollution with heavy metals is a global disaster that is related tohuman activities. This study was conducted to determine the extent of heavy metalsaccumulation by plant species in Lia industrial city (Qazvin, Iran) and to investigate theremediative capacity of native plant species grown in the contaminated soils. Soil andindustrial wastewater sampling was done radially along tra...

Journal: :Scientific Reports 2021

Abstract Management of soil micronutrients for better crop production needs a sound understanding their status and causes variability. This is more relevant acid soils the mountain ecosystem Eastern Himalaya (Northeast India). We assessed status, effect land uses along altitudinal gradients (14 to 4090 masl) on properties micronutrient concentrations (DTPA extractable Fe, Mn, Cu, Zn) across reg...

2009
Iheoma M. Adekunle

The effect of temperature changes (10 to 80 degrees C) on water-extractable metal (Zn, Cu, Cd and Pb) concentrations of composted wastes of Nigerian origin was investigated in batch extraction experiments. Metal concentrations were measured using a calibrated atomic absorption spectrophometer after acid digestions. Results showed that the water-extractable metal fractions (I) did not exceed 10%...

ژورنال: علوم آب و خاک 2015
سپهر, ابراهیم , پیری, مرضیه ,

Humic substances are the most important organic fractions in soils and have affinity towards trace metals. In order to evaluate the effect of humic acid on zinc (Zn) sorption and desorption by soil,‌ a batch experiment was conducted with two soil samples which were different in clay and calcium carbonate contents. Three levels of humic acid (0,‌ 200, 500 mg/L) and various Zn concentrations (0 t...

2007
G. S. Toor B. E. Haggard A. M. Donoghue

Poultry litter contains many trace elements such as As, Cu, and Zn, and its land application may lead to the accumulation of these elements in soils, especially near the soil surface. The objectives of this study were to determine the total amount of trace elements and evaluate the effect of litter granulation and various litter to water extraction ratios on water extractable trace elements in ...

ژورنال: علوم آب و خاک 2003
حسین شریعتمداری, , مجید افیونی, , سکینه واثقی, , مصطفی مبلی, ,

Excessive application of sewage sludge leads to the accumulation of potentially toxic elements in soils. The objective of this greenhouse study was to examine the DTPA–extractability of Fe, Zn, Cu, Mn, Pb, Cd, Ni, and Co in relation to soil pH and to investigate the concentrations of these metals in corn (Zea mayz). The study was conducted using a factorial experiment in a completely randomized...

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