Volume 2 Nitrogen Compounds, Carboxylic Acids, Phosphorus Compounds; edited by I. O. Sutherland, Liverpool

Talanta ◽  
1979 ◽  
Vol 26 (2) ◽  
pp. II-III
Author(s):  
Strasbourg Ourisson
Keyword(s):  
Carboxylic Acids ◽  
Phosphorus Compounds ◽  
Nitrogen Compounds

Photochemical combustion of organic matter in sea water, for nitrogen, phosphorus and carbon determination

1968 ◽  
Vol 48 (1) ◽  
pp. 143-152 ◽  
Author(s):  
F. A. J. Armstrong ◽  
Susan Tibbitts
Keyword(s):  
Organic Matter ◽  
Sea Water ◽  
Phosphorus Compounds ◽  
Nitrogen Compounds ◽  
English Channel ◽  
First Order ◽  
First Order Kinetics ◽  
Channel Water ◽  
Carbon Determination ◽  
Nitrogen Phosphorus

A photochemical reactor, using a medium power mercury arc lamp for oxidation of organic matter in sea water, is described. The decomposition of some known compounds in distilled water and in sea water, using a 380 W lamp, was followed. First order kinetics with rate constants in the range 0·2–4·0 h−1 were observed. All the nitrogen compounds tested, including urea and some of its derivatives, were oxidized quantitatively. Breakdown of phosphorus compounds was rapid, but polyphosphate esters yielded polyphosphate ion which was only slowly hydrolysed to reactive orthophosphate. If polyphosphate is to be determined, hydrolysis by heating with acid should follow the irradiation. Some samples of English Channel water contained 0·02-0–05 fig-axom P/1. as organic polyphosphate.

scholarly journals The change of the main agrochemical indicators of the sod-podzolic soil for the submission of the municipal wasterwater under the artichoke

2021 ◽  
Vol 12 (3) ◽  
pp. 66-75
Author(s):  
V. I. Lopushniak ◽  
◽  
G. M. Hrytsuliak ◽  
Keyword(s):  
Sewage Sludge ◽  
Podzolic Soil ◽  
Soil Layer ◽  
Fertilizer Application ◽  
Mineral Nitrogen ◽  
Phosphorus Compounds ◽  
Nitrogen Compounds ◽  
Concentration Coefficient ◽  
Mobile Phosphorus ◽  
Control Variant

The studies have shown that the introduction of sewage sludge and compost made on its basis, significantly affects the change in the agrochemical parameters of the sod-medium-podzolic soil, increasing the content of the alkaline hydrolysed nitrogen compounds by 2.2 – 13.4 mg/kg of the soil compared to with control and determining the size of its values at the level of 51.2 – 56.5 mg/kg of the soil in the upper (0 – 20 cm) and 27.9 – 31.6 mg/kg – in the lower (20 – 40 cm) soil layer. The content of the ammonium nitrogen compounds in the variants with the fertilizer application fluctuated in a small range of the values (16 – 21 mg/kg of soil) and increases under the influence of increasing fertilizer doses. Together with the change in the content of the nitrate nitrogen, this contributed to an increase in the content of the mineral nitrogen compounds in the soil in the range of 18.5 – 23.4 mg/kg of the soil in arable (0 – 20 cm) and 19.8 – 21.9 mg/kg of the soil – in subsoil (20 – 40 cm) layers, which by 1.7 – 2.2 mg/kg of the soil exceeded the control variant. The highest indicators of the mineral nitrogen compounds were recorded in the variant where the highest dose of the sewage sludge was applied – 40 t/ha and mineral fertilizers (N10P14K58). Despite the wide range of the nitrogen content values of the alkaline hydrolysed compounds and mineral nitrogen compounds, their ratio remained stable and was 2.3 – 2.6 in the upper and 1.3 – 1.5 in the lower (20 – 40 cm) soil layer, and also decreased with the increasing dose of the fertilizer. That is, this indicator did not change significantly depending on the fertilizer application rate. The content of the mobile phosphorus compounds in the variants with the use of the fertilizers fluctuated in the range of the values (77.5 – 98.5 mg/kg of the soil) and increased under the influence of the introduction of the sewage sludge and compost based on it, which is 14.6 – 35.6 mg/kg of the soil was dominated by the control indicators. The highest rates of the mobile phosphorus compounds were recorded in the variant where the sewage sludge were applied – 40 t/ha and N10P14K58. The introduction of the sewage sludge at a rate of 20 – 40 t/ha contributed to an increase in the content of the potassium metabolites at the level of 89.3 – 97.2 mg/kg of the soil in the upper (0 – 20 cm) and 83.1 – 93.4 mg/kg – in the lower (20 – 40 cm) layer, which exceeded the indicators of the control variant by more than 42.1 mg/kg of the soil. The content of the potassium metabolic compounds increased somewhat less with the introduction of the composts based on the sewage sludge and straw. The results of the correlation-regression analysis indicate that the phosphorus concentration coefficient in the soil largely depends on the content of its mobile compounds and is marked by the coefficient of the determination R2 = 0.70. The potassium concentration coefficient is closely (R2 = 0.91) correlated with the content of its metabolic compounds in the soil.

scholarly journals Nitrogen and phosphorus compounds in the aleurone grains of Iris pseudoacorus endosperm and Pisum sativum cotyledons

2015 ◽  
Vol 42 (4) ◽  
pp. 533-540 ◽  
Author(s):  
Ligia Konopska
Keyword(s):  
Pisum Sativum ◽  
Organophosphorus Compounds ◽  
Dry Mass ◽  
Phosphorus Compounds ◽  
Nitrogen Compounds ◽  
Nitrogen And Phosphorus ◽  
Inorganic P

Aleurone grains from <i>Iris pseudoacorus</i> endosperm and <i>Pisum sativum</i> cotyledons were isolated partly according to Tombs's method (1967). Nitrogen compounds content was determined in them by Kjeldahl's micromethod, and in the particular fractions after Thiman and Laloraya (1960). Mainly protein N was detected in the aleurone grains, constituting 14.8 and 15.2 per cent of the dry mass of pea and Iris seeds, respectively. Moreover, phosphorus compounds were fractionated according to Holden and Pirie (1955). Analyses demonstrated the presence in aleurone grains of inorganic P, acid-soluble organophosphorus compounds, phospholipids and RNA.

INORGANIC AND ORGANIC SUBSTANCES IN WATER BODIES OF THE “OLEKSANDRIYA” DENDROLOGICAL PARK (THE TOWN OF BILA TSERKVA)

2020 ◽  
pp. 48-55
Author(s):  
P.D. Klochenko ◽  
Z.N. Gorbunova ◽  
T.F. Shevchenko ◽  
T.V. Vitovetska
Keyword(s):  
Organic Matter ◽  
Dissolved Oxygen ◽  
Inorganic Nitrogen ◽  
Inorganic Phosphorus ◽  
Phosphorus Compounds ◽  
Nitrogen Compounds ◽  
Organic Substances ◽  
Nitrogen And Phosphorus ◽  
The Town ◽  
Inorganic And Organic

The content of inorganic nitrogen and phosphorus compounds, chloride, organic matter, and dissolved oxygen was studied in 11 ponds of the “Oleksandriya” Dendrological Park. Samples were taken in summer 2016–2018 in the cascade of ponds located in the Western, Middle, and Eastern ravines of the park. The obtained data suggest that the studied ponds are significantly polluted by inorganic and organic substances, the amount of which remains still very high. The ponds of the Western ravine are characterized by the highest content of inorganic nitrogen compounds and chloride.Thus, in particular, the concentration of ammonium in the Poterchata pond accounted for 103.00–160.00 mg N/L, in the Rusalka pond – 64.00–89.50 mg N/L, in the Vodyanyk pond – 28.00–43.00 mg N/L, whereas in the Skelny pond – 12.00–38.50 mg N/L. The concentration of nitrite in the studied ponds accounted for respectively 1.130–2.213 mg N/L, 1.538–1.950 mg N/L, 0.988–1.388 mg N/L, and 0.730–1.288 mg N/L. The concentration of nitrate was also rather high. Thus, in the Poterchata pond it was 52.00–81.25 mg N/L, in the Rusalka pond – 48.00–73.75 mg N/L, in the Vodyayk pond – 21.50–38.75 mg N/L, whereas in the Skelny pond – 14.50–27.50 mg N/L. The concentration of chloride in the studied ponds accounted for respectively 690.9–795.7 mg/L, 553.8–580.5 mg/L, 283.5–308.4 mg/L, and 274.5–287.1 mg/L. The highest concentration of inorganic phosphorus (0.470 mg/L) was observed in one of the ponds of the Middle ravine. The highest values of dichromate oxidizablity (97.0 and 81.0 mg O/L) were registered in the first two ponds of the Western ravine, which is indicative of their essential contamination by organic matter. The lowest concentration of the dissolved oxygen (3.8 mg/L) was observed in the ponds of the Middle ravine. The complex of measurements aimed at the improvement of the state of the ponds of the “Oleksandriya” Dendrological Park should be elaborated and realized. In particular, it is essential to reveal the main source of the pollution of the ponds of the Western ravine by inorganic nitrogen compounds and chloride, and also to keep them clear of pollutants.

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