Екологічна оцінка варіабельності вмісту нітратів у овочевих та плодово-ягідних культурах у Дніпропетровській області

Метою роботи є кількісне визначення вмісту ніт-ратів в овочевій і плодово-ягідній продукції після про-ведення польових дослідів у Дніпропетровській облас-ті. Наведено результати визначення нітратів в ово-чах, плодах і ягодах, що найчастіше використовуютьу раціоні харчування людини. Контроль вмісту ніт-ратів здійснювався потенціометричним методом звикористанням іоноселективного електроду. У ре-зультаті проведених досліджень встановлено найбіль-ше перевищення ГДК в таких овочах: редис, буряк,морква і кабачки – із 6 проб 5 перевищують ГДК. Підчас визначення вмісту нітратів у картоплі 12 проб із46 перевищували ГДК, у капусті – 2 проби з 12, а уперці – 2 проби з 9 перевищували ГДК. За вмістомнітратів вивчені в нашій роботі фрукти та ягодивідносяться до групи за малою концентрацією – до100 мг/кг. Найменший вміст нітратів знайдено у зе-леному горошку. The aim of this work is the ecological assessment of quantitative determination of nitrate in vegetable and fruit production after conducting field experiments in Dnipropetrovsk region. The results of the determination of nitrates in vegetables, fruits and berries, which are most often used in the human diet are presented. Control of nitrate content was carried out by potentiometric method using an ion-selective electrode. The results of the research showed the greatest exceedance in such vegetables: radishes, beets, carrots and pumpkin – in 6 samples 5 exceed MPC. In the determination of nitrate content in potato 12 samples from 46 exceed the MCL, in cabbage – 2 samples of 12, and pepper – in 2 samples from 9 exceed the MPC. The fruits and berries studied in our work on the nitrate concentration belong to the group of low concentration (up to 100 mg/kg). The lowest nitrate content was found in green peas.

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Development of New coated wire nitrate selective electrode sensor for determination of nitrate concentration in an aqueous sample

2011 2nd International Conference on Instrumentation, Communications, Information Technology, and Biomedical Engineering ◽

10.1109/icici-bme.2011.6108660 ◽

2011 ◽

Author(s):

B. Buchari ◽

Indra Noviandri ◽

Mitra Djamal ◽

Maria Evita

Keyword(s):

Nitrate Concentration ◽

Aqueous Sample ◽

Selective Electrode ◽

Electrode Sensor ◽

Coated Wire

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Ion-selective electrode for quantitative determination of baclofen in pills

Pharmaceutical Chemistry Journal ◽

10.1007/s11094-011-0637-4 ◽

2011 ◽

Vol 45 (6) ◽

pp. 374-376 ◽

Cited By ~ 1

Author(s):

V. A. Nazarov ◽

K. A. Andronchik ◽

V. V. Egorov ◽

S. A. Belyaev ◽

T. L. Yurkshtovich

Keyword(s):

Quantitative Determination ◽

Ion Selective Electrode ◽

Selective Electrode

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Phytic acid-based copper(ii) ion-selective electrode on graphene oxide for potentiometric immunoassay of breast cancer antigen 15-3

New Journal of Chemistry ◽

10.1039/c9nj01834d ◽

2019 ◽

Vol 43 (28) ◽

pp. 11171-11177 ◽

Cited By ~ 3

Author(s):

Min Zheng ◽

Yong-Jin Cao ◽

Wei-Hua Cai ◽

Xi Shi ◽

Mou-Feng Wang ◽

...

Keyword(s):

Breast Cancer ◽

Graphene Oxide ◽

Quantitative Determination ◽

Tumor Marker ◽

Phytic Acid ◽

Carbohydrate Antigen ◽

Ion Selective Electrode ◽

Selective Electrode ◽

Cancer Antigen

A potentiometric immunoassay based on a copper(ii) ion-selective electrode (Cu-ISE) was designed for the quantitative determination of carbohydrate antigen 15-3 (CA 15-3; a tumor marker associated with breast cancer).

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Event-based analysis of nitrate flushing from forested catchment using high-frequency in-stream monitoring data

10.5194/egusphere-egu2020-1872 ◽

2020 ◽

Author(s):

Klaudija Sapac ◽

Andrej Vidmar ◽

Simon Rusjan

Keyword(s):

Nitrate Concentration ◽

Precipitation Amount ◽

Pressure Sensors ◽

Nitrate Content ◽

Dilution Method ◽

Time Step ◽

Area Index ◽

Flood Peak ◽

Stream Monitoring

In the small, forested Kuzlovec stream catchment near Ljubljana, Slovenia, nitrate flushing data were monitored in years 2018 and 2019. The amount of exported nitrates, determined based on the nitrate concentration in the stream, depends on hydrometeorological and biogeochemical conditions in the catchment. Therefore, various measuring equipment was installed in the catchment: tipping buckets for measuring precipitation amount and rainfall rates, pressure sensors in the stream for evaluation of water level and consequently of stream discharge, soil moisture sensors in three depths, a multiparameter probe for measuring the physical and chemical properties of water, including concentration of nitrates, etc. Moreover, occasionally, some discrete measurements were performed: discharge measurements using a dilution method, leaf area index measurements for determination of vegetation conditions using a plant canopy analyser, determination of soil properties including nitrate content in different soil horizons, etc.Data, which were obtained using in-situ equipment for continuous measurements, were collected or recalculated to a 20-min time step. Due to geological properties and steep slope of the terrain, the catchment is very responsive to rainfall events. This is reflected in a short time of concentration, meaning that both flood peak and nitrate concentration peak occur shortly after the rainfall event. However, concentration of nitrates in stream and consequently the amount of flushed nitrates vary on event basis. This paper presents results of analysis of different events which occurred during the monitoring in order to identify hydrometeorological and seasonal conditions on nitrate flushing.Acknowledgment: We acknowledge the financial support of the Slovenian Research Agency (research core funding No. P2-0180, and the PhD grant of the first author).

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