Relevant bibliographies by topics / Ion nitrat

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Ion nitrat'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Ion nitrat"

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Windasari, Wiwin, and Elfira Maya Sari. "KANDUNGAN NITRIT (NO2) DAN NITRAT (NO3) DALAM AIR MINUM DI DESA CIKETING UDIK KECAMATAN BANTAR GEBANG KOTA BEKASI." Jurnal Mitra Kesehatan 3, no. 2 (2021): 70–75. http://dx.doi.org/10.47522/jmk.v3i2.79.

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Pendahuluan: Air minum adalah air yang melalui proses pengolahan atau tanpa proses pengolahan yang memenuhi syarat kesehatan dan dapat langsung diminum. Persyaratan pokok air meliputi persyaratan biologi, fisika, dan kimiawi. Masalah yang serius di negara berkembang yaitu masalah kimiawi yang tidak dapat diatasi dengan merebus air untuk diminum, salah satunya seperti kandungan nitrit dan nitrat. Kandungan nitrit dan nitrat di dalam air minum tidak boleh melebihi kadar yang telah ditetapkan oleh Permenkes RI NO. 492 Tahun 2010 yaitu 3 mg/L untuk nitrit dan 50 mg/L untuk nitrat. Penelitian ini b
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Syafaat, Fahmi, Ahmad Suseno, and Arnelli Arnelli. "Kinetika Adsorpsi Anion Nitrat dan Fosfat pada Zeolit Alam Termodifikasi Surfaktan Hexadesiltrimetilammonium Klorida." Jurnal Kimia Sains dan Aplikasi 16, no. 3 (2013): 73–78. http://dx.doi.org/10.14710/jksa.16.3.73-78.

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Telah dilakukan penelitian tentang kinetika adsorpsi zeolit alam dengan surfaktan heksadesiltrimetilammonium klorida sebagai adsorben ion nitrat dan fosfat. Penelitian ini bertujuan untuk menentukan konstanta laju adsorpsi (k) optimum pada anion nitrat dan fosfat. Penelitian ini dilakukan dengan proses modifikasi,dan adsorpsi. Proses modifikasi dilakukan dua tahap, yaitu tahap aktivasi zeolit alam yang dilakukan dengan menambahkan larutan HF 1% selama 10 menit dan penambahan larutan NH4Cl 2M selama 4 jam, selanjutnya zeolit aktif dimodifikasi dengan HDTMA-Cl menggunakan kolom. Proses adsorpsi
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Khaer, Ain, and Budirman Budirman. "KEMAMPUAN MEDIA FILTER ION EXCHANGE DALAM MENURUNKAN KADAR NITRAT AIR SUMUR GALI DI DAERAH KAWASAN PESISIR." Sulolipu: Media Komunikasi Sivitas Akademika dan Masyarakat 19, no. 1 (2019): 102. http://dx.doi.org/10.32382/sulolipu.v19i1.972.

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Senyawa nitrogen dalam jumlah yang kecil tidak menimbulkan gangguan, sebaliknya dalam kadar yang tinggi dapat menyebabkan kesakitan bahkan kematian. Selain itu juga dapat menyebabkan methoemoglobinaemia pada bayi melalui makanan yang mengandung nitrat terutama bersumber air sumur gali yang belum memenuhin syarat. Teknologi filterasi dengan media penukar ion untuk mengurangi kandungan nitrogen yang terdapat dalam air sumur gali masyarakat Penelitian ini bertujuan untuk mengetahui kemampuan filterasi ion exchange dalam menurunkan kadar nitrat (No3-) pada air sumur gali kawasan pesisir. Penelitia
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Khair, Hafizhul, Kania Dewi, and Moh Irsyad. "Pemanfaatan Titanium Dioxide pada Trotoar untuk Mengurangi Gas Pencemar NOx di Udara." Jurnal Dampak 13, no. 2 (2017): 35. http://dx.doi.org/10.25077/dampak.13.1.35-43.2016.

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The transportation is one of the largest contributor to air pollution in Indonesia, especially in large cities. Fuel gases from combustion in motor vehicles, such as oxides of nitrogen (NOx) will be emitted to the ambient air. Increasing the concentration of NOx in ambient air can be bad for human health, especially with regard to upper respiratory tract disease. Therefore, the development of methods which are environmentally friendly for controlling air pollution remains to be done. One simple way to reduce air pollution is utilizing a cheap process, namely sunlight and effect of catalyst of
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MASTUR, SYAFARUDDIN, and M. SYAKIR. "Peran dan Pengelolaan Hara Nitrogen pada Tanaman Tebu Untuk Peningkatan Produktivitas Tebu." Perspektif 14, no. 2 (2016): 73. http://dx.doi.org/10.21082/p.v14n2.2015.73-86.

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ABSTRAK<br /><br />Usaha peningkatan produktivitas tebu memerlukan varietas unggul baru (VUB) tebu berpotensi rendemen tinggi didukung teknologi budidaya yang tepat. Pengelolaan hara nitrogen (N) yang efektif dan efisien membutuhkan pemahaman peran fisiologis N dan responnya. Tinjauan ini dimaksudkan untuk membahas hasil-hasil penelitian dan implikasinya tentang penyerapan N, reduksi, biosintesis asam amino, respon dan pengaruh N dan interaksi dengan hara lain, serta aspek penyediaan hara N meliputi dosis, dan cara pemberian hara N dalam hubungannya dengan produktivitas dan rendeme
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KILIÇ, Arzu, Serden BAŞAK, Kevser CIRIK, et al. "İçme Sularından Nitrat Gideriminde İkincil Kirleticilerin Denitrifikasyona Etkisi / The Effect of Co-Contaminant on Denitrification Removal of Nitrate in Drinking Water." Journal of History Culture and Art Research 1, no. 4 (2013): 475. http://dx.doi.org/10.7596/taksad.v1i4.83.

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Son yıllarda tarımda bilinçsizce kullanılan azotlu gübreler ve arıtılmadan deşarj edilen atıksular yeraltısularında nitrat kirliliğinin artmasına neden olmuştur. Geçmişteki çalışmalar birçok ülkede yeraltısuyunda nitrat konsantrasyonunun hızında artış olduğunu göstermektedir. Ülkemizde yeraltısularının ve kullanılabilir içme suyu kaynaklarının kirlilik haritası henüz çıkarılmış değildir. Yapılan bölgesel çalışmalarda ülkemizdeki kaynakların da hızlı bir şekilde kirlendiği görülmektedir. Şanlıurfa, Harran ovasında, Akdeniz kıyı bölgelerinde yapılan çalışmalarda kuyularda nitrat konsantrasyonun
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Hartono, Arief, Syaiful Anwar, and Masruroh. "Karakteristik Erapan Nitrat pada Andisol." Jurnal Ilmu Tanah dan Lingkungan 23, no. 1 (2021): 1–6. http://dx.doi.org/10.29244/jitl.23.1.1-6.

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Penggunaan pupuk urea dan pupuk kandang yang berlebihan oleh petani menyebabkan terjadinya akumulasi ion nitrat pada tanah pertanian. Pengetahuan tentang kemampuan tanah dalam mengerap nitrat menjadi sangat penting dalam kaitan pergerakan nitrat di dalam profil tanah. Tujuan penelitian ini adalah karakterisasi tanah-tanah pertanian yang mempunyai order Andisol di Pulau Jawa dalam mengerap nitrat dan mengidentifikasi sifat-sifat tanah yang mempengaruhi erapan nitrat. Data erapan nitrat diperoleh dengan menjenuhkan tanah dengan larutan nitrat pada berbagai konsentrasi, setelah sebelumnya tanah d
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Putra, Arief yandra. "UJI KUALITAS AIR TANAH DARI KADAR TDS, ION SO42- DAN NO3- DI KECAMATAN KUBU BABUSSALAM, ROKAN HILIR." Journal of Research and Education Chemistry 1, no. 2 (2019): 23. http://dx.doi.org/10.25299/jrec.2019.vol1(2).3498.

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Air tanah memiliki peran yang sangat penting karena menjadi sumber utama untuk memenuhi kebutuhan pokok orang banyak. Air tanah dalam siklus hidrologi melibatkan beberapa aspek yang mempengaruhi ketersediaan air tanah di suatu daerah. Pada, kondisi sekarang masalah yang paling utama adalah sumber daya air. Beberapa kegiatan berdampak negatif terhadap penurunan kualitas air yang berasal dari kegiatan industri, domestik dan kegiatan lainnya. Tujuan dari penelitian ini adalalah untuk menganalisis kualitas air tanah di kecamatan Kubu Babussalam, Kabupaten Rokan Hilir, Provinsi Riau yang ditinjau d
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Hikmah, Fajrin Nurul, Tri Mulyono, and Zulfikar Zulfikar. "Simultaneous Analysis of Ammonium and Nitrate Ions Levels with Potentiometric Multi-commutation Flow System Method." Jurnal ILMU DASAR 22, no. 1 (2021): 69. http://dx.doi.org/10.19184/jid.v22i1.17767.

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This study aims to develop a multi-commutation flow system method for simultaneous determination of ammonium ion and nitrate ion using two detectors, namely ammonium ion selective electrode and nitrate ion selective electrode. The multi-commutation flow system method uses two three way selenoide valves to adjust the sample flow and ISA solution. The selenoid valve alternately flows the sample and ISA solution to the ion selective electrode. Flow control by three way selenoid valves is controlled by LabView which is programmed in the computer. The computer is connected with Arduino and a relay
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Febriarta, Erik. "Kajian Kualitas Air Tanah Dampak Intrusi Di Sebagian Pesisir Kabupaten Tuban." Jurnal Geografi : Media Informasi Pengembangan dan Profesi Kegeografian 17, no. 2 (2020): 39–48. http://dx.doi.org/10.15294/jg.v17i2.24143.

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Wilayah Kabupaten Tuban bagian utara berbatasan langsung dengan Laut Jawa dengan pembangunan terpusat pada daerah pesisir. Salah satu isu permasalahan yang timbul dari pertumbuhan kota pesisir adalah penurunan kualitas air tanah akibat intrusi air laut. Penelitian ini bertujuan mengetahui kualitas air tanah yang terdapak intrusi air laut. Metode yang digunakan untuk mengetahui kondisi kualitas air tanah dengan analisis perbandingan dengan nilai baku mutu PermenKes RI No.32 Tahun 2017. Unsur yang dianalisis e.coli, e.coli total, nitrit (N02), nitrat (N03), bau, total zat padat terlarut (TDS), r
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Dissertations / Theses on the topic "Ion nitrat"

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Vega, Riquelme Carmen Paulina. "Nitrate stable isotopes and major ions in snow and ice from Svalbard." Doctoral thesis, Uppsala universitet, Institutionen för geovetenskaper, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-221780.

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Increasing atmospheric reactive nitrogen (Nr), as consequence of human activities, has generated accumulation of nitrate (NO3-) in Arctic regions. The Arctic has fragile nitrogen limited ecosystems that can be altered by increases of dry or wet deposition of Nr. Ice cores have shown increments of twofold in nitrogen deposition over Greenland and Svalbard during the 20th century. Ice core NO3- stable isotopes, (δ15N-NO3- and δ18O-NO3-), have the potential to serve as proxy of nitrogen oxides (NOx) sources and atmospheric oxidation pathways. NO3- is difficult to interpret in ice since it has sev
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Gamboa, Juan Claudio Mancilla. "Fabricação de sensores eletroquímicos para a determinação de espécies químicas de relevância ambiental." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/46/46136/tde-18082011-141833/.

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Neste trabalho são apresentados resultados relacionados à determinação de nitrato, nitrito e amônio por técnicas eletroquímicas. Para a determinação de nitrato foi utilizada uma lâmina de cobre cuja superfície é renovada continuamente empregando um processo de ativação (oxidação do cobre e subseqüente redução de íons Cu(II)) com potencial controlado em sistema FIA. As condições ótimas foram alcançadas por meio de 60 s para a etapa de ativação, vazão do transportador 3,0 mL min-1 e volume de amostra 150 µL. A repetibilidade foi estimada em 4,7% (n=9) com freqüência de amostragem de 60 amos
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Andrade, Flávio Vargas. "Redução de íons nitrato em eletrodos de paládio suportados em carbono." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/75/75131/tde-11052007-093041/.

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A eletroredução de íons nitrato foi estudada em eletrodos de Paládio suportados em carbono, preparados através de ultra-som, com diferentes tamanhos de partículas. Para tanto, foi necessária a caracterização do catalisador de Pd/C através de DR-X, MET, EDX. Após a caracterização dos catalisadores, preparou-se os eletrodos através de pintura dos catalisadores em tecido de carbono que foram caracterizados por voltametria cíclica. Os estudos de redução de íon nitrato foram realizados utilizando a técnica de DEMS. Foi realizada a normalização dos eletrodos através da porcentagem de paládio obtida
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Frampton, Nicholas Charles. "Nitrate selective electrodes containing immobilised ion exchangers." Thesis, University of Plymouth, 1992. http://hdl.handle.net/10026.1/2033.

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A range of ion selective electrodes (ISEs) for the determination of nitrate has been produced using polymeric membranes containing immobilised quaternary ammonium salts as the ion exchanger. The use of the conventional solvent casting technique gave rise to a relatively low cross-link density, two sided response and poor thickness control. The development of a hot pressing technique resolved all the se problems and would readily suit large scale manufacturing. In this work poly(acrylonitrilebutadiene)(NBr) was selected as the membrane matrix and was robust, gave enhanced selectivity coefficien
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Aouina, Nizar. "Réduction électrochimique des ions nitrate et nitrite sur électrode de cuivre, en milieu neutre: Apport à la compréhension du mécanisme réactionnel." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2010. http://tel.archives-ouvertes.fr/tel-00462788.

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Au cours de ce travail, le mécanisme réactionnel de réduction des ions nitrate à une électrode de cuivre en milieu neutre a été étudié et comparé aux résultats obtenus en milieux acide et alcalin. Pour ce faire, des études avec un des intermédiaires réactionnels, les nitrites, ont également été menées. En présence d'ions nitrate, trois vagues de réduction apparaissent sur le voltampérogramme vers -0,9, -1,2 et -1,3 V/ECS. Des mesures avec une électrode tournante nous ont permis de déterminer le nombre d'électrons échangés pour chaque vague, à savoir 2 (nitrites), 6 (hydroxylamine) et 8 (ammoni
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Aouina, Nizar. "Réduction électrochimique des ions nitrate et nitrite sur électrode de cuivre, en milieu neutre : apport à la compréhension du mécanisme réactionnel." Paris 6, 2009. http://www.theses.fr/2009PA066323.

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Au cours de ce travail, le mécanisme réactionnel de réduction des ions nitrate à une électrode de cuivre en milieu neutre a été étudié et comparé aux résultats obtenus en milieux acide et alcalin. Pour ce faire, des études avec un des intermédiaires réactionnels, les nitrites, ont également été menées. En présence d’ions nitrate, trois vagues de réduction apparaissent sur le voltampérogramme vers -0,9, -1,2 et -1,3 V/ECS. Des mesures avec une électrode tournante nous ont permis de déterminer le nombre d’électrons échangés pour chaque vague, à savoir 2 (nitrites), 6 (hydroxylamine) et 8 (ammoni
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Machado, Franck. "Reactions photochimiques induites sur les composes phenoliques par excitation des ions nitrate et nitrite en solution aqueuse." Clermont-Ferrand 2, 1994. http://www.theses.fr/1994CLF21610.

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L'excitation photochimique des ions nitrite et nitrate en presence de composes phenoliques peut induire des oxydations, des nitrations et des nitrosations. Les reactions d'oxydation se produisent quel que soit le substituant et peuvent etre attribuees aux radicaux hydroxyle formes lors de la photolyse des ions. Les reactions de nitration et de nitrosation sont defavorisees par les substituants electro-attracteurs. Quand les ions nitrite sont excites en presence de phenol ou de resorcinol, une nitrosation en para est observee, qui peut etre attribuee aux oxydes d'azote formes lors de la photoly
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Tian, Wei. "Reaction of 3-deoxyhexosulose with nitrite ion." Thesis, University of Leeds, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254663.

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Jones, Konnor. "Temperature and Electric Field Dependency of Asymmetric Stretching of Nitrate and Carbonate Ions." TopSCHOLAR®, 2018. https://digitalcommons.wku.edu/theses/2804.

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Photolysis of nitrate ion in the natural environment produces NO, NO2, and O3, releasing these toxic gases into the atmosphere. Work done by other groups has shown ionic strength dependence of the ratio of products from photolysis of aqueous nitrate ion. To better understand the kinetic mechanisms of nitrate photolysis, the effects that ionic strength in solution have on nitrate ion symmetry breaking are needed. Different solvation environments induce nitrate bonding motifs that may be correlated to the product ratio. Fourier-transform infrared spectra of aqueous nitrate–ion solutions were obt
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Ebrahimi, Shelir. "Nitrate removal from drinking water using combined ion exchange/ resin bioregeneration." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/55631.

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Nitrate contamination is a drinking water concern in many areas in the world, especially rural communities. Excess nitrate can cause several environmental and health problems. The maximum acceptable concentration of nitrate in drinking water is set to be 45 mg /L as nitrate by USEPA. One of the most common methods for nitrate removal from water is ion exchange using nitrate selective resins. Although these resins have a great capacity for nitrate removal, they are considered non regenerable. The ability to regenerate these resins multiple times will increase the environmental and economic sust
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Books on the topic "Ion nitrat"

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Lehman, S. Geno. Biological destruction of perchlorate and nitrate in ion exchange concentrate. Water Research Foundation, 2010.

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2

Canada, Canada Environment, and Canada. National Guidelines and Standards Office., eds. Canadian water quality guidelines for the protection of aquatic life: Nitrate ion. National Guidelines and Standards Office, Environment Canada, 2003.

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Jamarani, F. Deposition of single-layer and graded aluminum nitride coatings on vanadium substrates using ion-beam assisted reactive evaporation (ITER task no. ETA-EC-BRL26). Canadian Fusion Fuels Technology Project, 1994.

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Křivský, Petr. Do nitra kontinentů. Mladá fronta, 1988.

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Jan Peter van der Hoek. Combined ion exchange/biological denitrification for nitrate removal from ground water under different process conditions. Pergamon, 1988.

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C, Antweiler Ronald, Taylor Howard E. 1945-, and Geological Survey (U.S.), eds. Method for the determination of dissolved chloride, nitrate, and sulfate in natural water using ion chromatography. U.S. Dept. of the Interior, U.S. Geological Survey, 1996.

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Willoughby, Timothy C. Stability of nitrate-ion concentrations in simulated deposition samples used for quality-assurance activities by the U.S. Geological Survey. Dept. of the Interior, U.S. Geological Survey, 1989.

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Willoughby, Timothy C. Stability of nitrate-ion concentrations in simulated deposition samples used for quality-assurance activities by the U.S. Geological Survey. Dept. of the Interior, U.S. Geological Survey, 1989.

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Willoughby, Timothy C. Stability of nitrate-ion concentrations in simulated deposition samples used for quality-assurance activities by the U.S. Geological Survey. Dept. of the Interior, U.S. Geological Survey, 1989.

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Willoughby, Timothy C. Stability of nitrate-ion concentrations in simulated deposition samples used for quality-assurance activities by the U.S. Geological Survey. Dept. of the Interior, U.S. Geological Survey, 1989.

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Book chapters on the topic "Ion nitrat"

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Lundberg, Jon O., Eddie Weitzberg, Sruti Shiva, and Mark T. Gladwin. "The Nitrate–Nitrite–Nitric Oxide Pathway in Mammals." In Nitrite and Nitrate in Human Health and Disease. Humana Press, 2011. http://dx.doi.org/10.1007/978-1-60761-616-0_3.

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Addison, C. C., and D. Sutton. "Complexes Containing the Nitrate Ion." In Progress in Inorganic Chemistry. John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470166093.ch4.

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Cheong, Chikako, and Tsutomu Miura. "Certification of Reference Materials of Nutrients in Seawater, NMIJ CRM 7601-a, 7602-a, and 7603-a." In Springer Oceanography. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-96-2520-8_5.

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Abstract The National Metrology Institute of Japan (NMIJ) has developed three levels of certified reference materials (CRMs) (NMIJ CRM 7601-a, 7602-a, and 7603-a) for nutrient analysis to provide SI traceability of analysis values of nutrients (nitrate, nitrite, phosphate, and dissolved silica) in oceanographic observations and to enable the comparison of these values across time and space. These property values were determined using the analytical results of multiple analytical methods and standard solutions of inorganic ions and elements as the SI traceability source. Depending on their char
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Klurfeld, David M. "Nitrite and Nitrate in Cancer." In Nitrite and Nitrate in Human Health and Disease. Humana Press, 2011. http://dx.doi.org/10.1007/978-1-60761-616-0_16.

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Klurfield, David M. "Nitrite and Nitrate in Cancer." In Nitrite and Nitrate in Human Health and Disease. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-46189-2_21.

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Pohling, Rolf. "Nitrat." In Chemische Reaktionen in der Wasseranalyse. Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-36354-2_26.

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Wany, Aakanksha, Pradeep Kumar Pathak, and Kapuganti Jagadis Gupta. "Methods for Measuring Nitrate Reductase, Nitrite Levels, and Nitric Oxide from Plant Tissues." In Nitrogen Metabolism in Plants. Springer New York, 2019. http://dx.doi.org/10.1007/978-1-4939-9790-9_2.

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Geng, Yong-Jian. "The Nitrate–Nitrite–Nitric Oxide Pathway in Traditional Herbal Medicine for Heart Disease." In Nitrite and Nitrate in Human Health and Disease. Humana Press, 2011. http://dx.doi.org/10.1007/978-1-60761-616-0_15.

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Maldonado, J. M., E. Agüera, and P. de la Haba. "Nitrate and Nitrite Utilization by Sunflower Plants." In Inorganic Nitrogen in Plants and Microorganisms. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-75812-6_24.

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Lavu, Madhav, Susheel Gundewar, and David J. Lefer. "Nitrite and Nitrate in Ischemia-Reperfusion Injury." In Nitrite and Nitrate in Human Health and Disease. Humana Press, 2011. http://dx.doi.org/10.1007/978-1-60761-616-0_14.

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Conference papers on the topic "Ion nitrat"

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Zapp, Philip E., and John W. Van Zee. "Electrochemical Studies of Nitrate-Induced Pitting in Carbon Steel." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99471.

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Abstract The phenomenon of pitting in carbon steel exposed to alkaline solutions of nitrate and chloride was studied with the cyclic potentiodynamic polarization technique. Open-circuit and pitting potentials were measured on specimens of ASTM A537 carbon steel in pH 9.73 salt solutions at 40°C, with and without the inhibiting nitrite ion present. Nitrate is not so aggressive a pitting agent as is chloride. Both nitrate and chloride did induce passivity breakdown and pitting in nitrite-free solutions, but the carbon steel retained passivity in solutions with 0.11-M nitrite even at a nitrate co
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Folwell, Benjamin, Jan Larsen, Alessandra Allegrucci, and Andrew Price. "Investigation of the Effects of Nitrate and Nitrite on Halfdan Sulfate-Reducing Archaea." In CORROSION 2016. NACE International, 2016. https://doi.org/10.5006/c2016-07162.

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Abstract Nitrate injection forms part of the mitigation strategy used in the Halfdan field to control reservoir souring. A review of Halfdan well data suggests that the H2S generated is due to the activity of sulfate-reducing archaea (SRA) in the Halfdan producing wells. The aim of this study was to determine SRA susceptibility to inhibition by nitrite, and determine whether SRA contain known nitrate and nitrite reduction genes. qPCR was used to enumerate total Archaea, narG, nirK and nirS copies (nitrate- and nitrite-reducing genes) in the produced water from five Halfdan producing wells. SRA
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Smith, Frank N. "Nitrate Stress Corrosion Cracking of Carbon Steel Equipment." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07485.

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Abstract The carbon steel casings of Heat Recovery Steam Generators (HRSGs) in a co-generation plant were found to have developed cracks that originated on the inside surfaces. The HRSGs receive hot exhaust gases from the primary Gas Turbines (GTs), which are fuelled with pipeline natural gas. The GTs was initially operating without any suppression of nitrogen oxides (NOx). After being in service for about over three years, some of the cracks were found to have penetrated right through the ¼ in. thick casings. The casings are fitted with insulation on the inside (hot gas side). Examination of
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Yasui, Ayano, Takehiro Toyoda, Yukinori Yanase, Toshiyuki Sunaba, Hiroyuki Tanabe, and Takeshi Kondo. "Zinc Coating in Corrosion under Insulation (CUI) Environments: Influence of Leached Anions in the Potential Reversal Phenomenon." In CONFERENCE 2025. AMPP, 2025. https://doi.org/10.5006/c2025-00362.

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Abstract Corrosion under insulation (CUI) is a significant challenge in industrial environments, particularly in the temperature range of 77-110°C according to API RP 581. Zinc-rich paint is commonly used in protective coatings for corrosion protection of carbon steel. This study investigates the behavior of zinc in simulated CUI environments at 80°C, focusing on the potential reversal phenomenon between zinc and carbon steel. Corrosion potentials of zinc and carbon steel were measured in solutions simulating anions leached from insulation materials. Additionally, electrochemical behavior of t
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Korvela, T., and Kemira Oy. "The Role of Nitrate in Prevention of Pitting Corrosion of Aluminum by Chloride Ions in Concentrated Hydrogen Peroxide." In CORROSION 1994. NACE International, 1994. https://doi.org/10.5006/c1994-94422.

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Abstract Corrosion behaviour of high purity aluminum was evaluated by potentiodynamic polarization measurements in 50 % hydrogen peroxide as a function of chloride and nitrate concentrations and in the presence of some amino(alkyl)phosphonates which are widely used as stabilizers against catalytic decomposition for hydrogen peroxide. Chloride ions, already at very low concentrations, induce pitting type corrosion for aluminum. This pitting can be prevented by sufficient additions of nitrate ions. Ammonium nitrate and nitric acid were equally efficient.
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Chiang, K. T., D. S. Dunn, and G. A. Cragnolino. "Effect of Simulated Groundwater Chemistry on Stress Corrosion Cracking of Alloy 22." In CORROSION 2005. NACE International, 2005. https://doi.org/10.5006/c2005-05463.

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Abstract Slow strain rate tests were performed to evaluate the effect of simulated groundwater chemistry variations on the stress corrosion cracking (SCC) susceptibility of mill-annealed Alloy 22. Tests were conducted in which the constituent anionic species were removed selectively from simulated concentrated water (SCW). SCC was observed in SCW and its variations [removal of nitrate, sulfate, fluoride or chloride] at a high anodic potential of 0.4 VSCE at 95°C (203°F). Although the bicarbonate ion is the predominant constituent in SCW causing SCC, a synergistic effect exists between the bica
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Galvele, J. R., G. S. Duffó, M. L. Montoto, and M. Giordano. "Effects of Molecular Size and Exchange Current on the SCC of Copper and Silver Alloys." In CORROSION 1995. NACE International, 1995. https://doi.org/10.5006/c1995-95168.

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Abstract The stress corrosion cracking (SCC) susceptibility of α-brass in 0.01 M copper sulfate with additions of 0.1 M of mono-and di-ethanolamine was studied as a function of the applied potential. In monoethanolamine solutions a potential dependent SCC process was found. In diethanolamine, on the other hand, SCC was observed only at the passivity breakdown potential, and it was attributed to the action of the sulfate ions. Transgranular SCC was found for Ag-Cd alloys in the presence of silver nitrate solutions, the higher the silver ion concentration in the solution the higher the crack vel
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Rice, Rip G. "Byproducts of Ozonation Formed During Treatment of Water." In CORROSION 1993. NACE International, 1993. https://doi.org/10.5006/c1993-93479.

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ABSTRACT Ozone has been used commercially for the treatment of drinking water for nearly a century -- yet definitive studies identifying byproducts of organic and inorganic solutes have been conducted only within the past 15 years. In this paper, the author will present results of an extended literature survey on the subject, and extrapolate this information to what byproducts can be expected to form during ozonation of recycling cooling waters. In general, organic byproducts of ozone oxidation consist of aldehydes, acids, aldehyde-acids, keto-acids, polybasic-acids, and peroxides. Some of the
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King, Fraser, Licai Mao, Jingli Luo, Michael Apted, John H. Kessler, and Andrew Sowder. "Mechanistic Studies of the Crevice Corrosion of Alloy 22 in Chloride-Nitrate Solutions." In CORROSION 2009. NACE International, 2009. https://doi.org/10.5006/c2009-09425.

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Abstract Alloy 22 is susceptibility to crevice corrosion in concentrated chloride solutions at elevated temperature. A number of oxyanions, most notably nitrate, sulfate, and carbonate, inhibit the aggressiveness of the chloride ion. The ratio of aggressive to inhibitive anions is a key parameter in predicting the possibility of the crevice corrosion of waste packages in the Yucca Mountain repository. The results of a preliminary experimental program to study the effects of chloride and nitrate ions on the propagation and stifling of the crevice corrosion of Alloy 22 are described. A coupled-e
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Hollander, O., and G. E. Geiger. "Development of a Corrosion Inhibitor for Low Carbon Steel in Concentrated Solutions of Urea-Ammonium Nitrate Fertilizers." In CORROSION 1988. NACE International, 1988. https://doi.org/10.5006/c1988-88347.

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Abstract Low carbon steel (LCS) exposed to concentrated solutions of urea-ammonium nitrate (UAN) can develop either a fully or a partially passive film. The integrity of the film phase that develops depends primarily on pH and, to a lesser extent, on nitrate ion concentration. Urea interacts synergistically with nitrate in the presence of low-carbon steel; surface adsorption may be the mechanism leading to higher true current densities. Based on this information, an inhibitor was developed that protects the naturally formed passive film from pH depressions.
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Reports on the topic "Ion nitrat"

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Van Rijn, Jaap, Harold Schreier, and Yossi Tal. Anaerobic ammonia oxidation as a novel approach for water treatment in marine and freshwater aquaculture recirculating systems. United States Department of Agriculture, 2006. http://dx.doi.org/10.32747/2006.7696511.bard.

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Ammonia waste removal in recirculating aquaculture systems is typically accomplished via the action of nitrifying bacteria in specially designed biofilters that oxidize ammonia to produce nitrate. In the majority of these systems nitrate is discharged to the environment through frequent water exchanges. As environmental considerations have made it necessary to eliminate nitrate release, new strategies for nitrate consumption are being developed. In the funding period we showed that ammonia removal from wastewater could take place by an anaerobic ammonia oxidation process carried out by bacteri
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Author, Unknown. PR-138-907-R01 Test Kit Manual Field Sampling and Analysis of Contaminant Ions on Pipe Surfaces. Pipeline Research Council International, Inc. (PRCI), 1995. http://dx.doi.org/10.55274/r0012142.

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This document contains instructions for the sampling of steel pipe surfaces for contaminant ions using electrolytic limpet cell extraction or direct contact extraction with chromatographic papers, and analytical test methods for chloride, sulfate, nitrate/nitrite, and ferrous iron ions. The electrolytic limpet cell sampling method is the preferred technique for the recovery of ion contaminants from all pipe surfaces. Contact paper sampling may be used when operating conditions make the use of electrolytic limpet cell sampling impractical or inconvenient. Examples of sampling and analysis data
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Szecsody, James, Robert Mackley, and Charles Resch. Characterization of Nitrate, Nitrite, Ammonia, and Tritium in D0220 Cores. Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2476875.

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Upadhyaya, Shrini K., Abraham Shaviv, Abraham Katzir, Itzhak Shmulevich, and David S. Slaughter. Development of A Real-Time, In-Situ Nitrate Sensor. United States Department of Agriculture, 2002. http://dx.doi.org/10.32747/2002.7586537.bard.

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Although nitrate fertilizers are critical for enhancing crop production, excess application of nitrate fertilizer can result in ground water contamination leading to the so called "nitrate problem". Health and environmental problems related to this "nitrate problem" have led to serious concerns in many parts of the world including the United States and Israel. These concerns have resulted in legislation limiting the amount of nitrate N in drinking water to 10mg/g. Development of a fast, reliable, nitrate sensor for in-situ application can be extremely useful in dynamic monitoring of environmen
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Mickalonis, J. I. Corrosion of steel in simulated waste containing different nitrate and nitrite concentrations. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10177023.

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Wongpakdeea, Thinnapong, Karin Crenshaw, Hery Figueroa Wong, Duangjai Nacapricha, and Bruce McCord. Advancements in Analytical Techniques for Rapid Identification of Gunshot Residue and Low Explosives through Electrochemical Detection and Surface-Enhanced Raman Spectroscopy. Florida International University, 2024. https://doi.org/10.25148/gfjcsr.2024.7.

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This research focuses on developing two analytical methods for forensic investigations using electrochemical detection and surface-enhanced Raman spectroscopy. For electrochemical analysis, screen-printed carbon electrodes are used to detect metals and nitrate/nitrite compounds commonly found in gunshot residue. Gold electrodeposition and copper modification enhance sensitivity and catalytic activity, respectively. Additionally, a screen-printed gold electrode modified with gold nanoparticles enables surface-enhanced Raman spectroscopy, requiring only a single drop of sample solution. Testing
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Bendikov, Michael, and Thomas C. Harmon. Development of Agricultural Sensors Based on Conductive Polymers. United States Department of Agriculture, 2006. http://dx.doi.org/10.32747/2006.7591738.bard.

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In this 1-year feasibility study, we tried polymerization of several different monomers, commercial as well as novel, specially designed and synthesized for this project in the presence of the nitrate ion to produce imprinted conductive polymers. Polymers 1 and 2 (shown below) produced a response to nitrate, but one inferior to that produced by a polypyrrole (Ppy)-based sensor (which we demonstrated prior to this study). Thus, we elected to proceed with improving the stability of the Ppy-based sensor. In order to improve stability of the Ppy-based sensor, we created a two-layer design which in
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ADAS, RSK. Nitrate Surveillance Monitoring Program (Annual Report May 2021 - March 2022). Food Standards Agency, 2022. http://dx.doi.org/10.46756/sci.fsa.uau489.

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Every Member State is required to monitor and report levels of nitrate in specified foodstuffs as part of the European Commission regulation and the UK also requires this information as part of the collection of data to support the review of retained EU law in the UK and inform the setting of policy around maximum nitrate levels. The requirement to carry out monitoring for nitrate in lettuce, spinach and rocket is being met by the UK Nitrate Surveillance Programme. Results are presented for the period between 1st April 2021 and 31st March 2022. A total of 202 samples were collected within the
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Metcalf, S. G. Reverse polarity capillary zone electrophoresis analysis of nitrate and nitrite in natural water samples. Office of Scientific and Technical Information (OSTI), 1998. http://dx.doi.org/10.2172/16960.

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MacDonald, James D., Aharon Abeliovich, Manuel C. Lagunas-Solar, David Faiman, and John Kabshima. Treatment of Irrigation Effluent Water to Reduce Nitrogenous Contaminants and Plant Pathogens. United States Department of Agriculture, 1993. http://dx.doi.org/10.32747/1993.7568092.bard.

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The contamination of surface and subterranean drinking water supplies with nitrogen-laden agricultural wastewater is a problem of increasing concern in the U.S. and Israel. Through this research, we found that bacteria could utilize common organic wastes (e.g. paper, straw, cotton) as carbon sources under anaerobic conditions, and reduce nitrate concentrations in wastewater to safe levels. Two species of bacteria, Cellulomonas uda and a Comamonas sp., were required for dentitrification. Celulomonas uda degraded cellulose and reduced nitrate to nitrite. In addition, it excreted soluble organic
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