Practical considerations on detectability of electrically active nanoparticles in environmental samples; IOP Conference Series: Earth and Environmental Science; Vol. 408 : Sustainable and Efficient Use of Energy, Water and Natural Resources
| Parent link: | IOP Conference Series: Earth and Environmental Science Vol. 408 : Sustainable and Efficient Use of Energy, Water and Natural Resources.— 2020.— [012072, 6 p.] |
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| निगमित लेखक: | |
| अन्य लेखक: | , , , |
| सारांश: | Title screen Environmental impact of nanotechnologies is among the most important global concerns because these technologies have introduced a completely new class of artificial pollutants with very diverse biological effects. Detection and characterization of nanoparticles in environmental samples requires highly sensitive methods and laboratory equipment. Recently introduced chronoamperometry of single nanoparticles has a potential to measure parameters of nanoparticles of different kinds, including organic and inorganic substances, metals and their oxides. This paper reports practical considerations on factors limiting the level of detection (LOD) for the chronoamperometry of single nanoparticles, successfully used to characterize electrically active nanoparticles. The influence of two major sources of electrical current noise on LOD was studied. It was shown that electrochemical noise dominates over the noise of electronic components. The LOD for a typical laboratory potentiostat was calculated. The overall background current noise (root mean square value) for a typical ultra-low input current potentiostat is between 10−3 - 10−12 A, that allows detecting silver nanoparticles with radius of 10-15 nm, LOD for nanoparticles of -Fe2O3 is 60-80 nm. The theoretical limit of minimum detectable size of nanoparticle is at least 10 times lower, but to achieve this limit very complicated technical issues should be resolved. |
| भाषा: | अंग्रेज़ी |
| प्रकाशित: |
2020
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| विषय: | |
| ऑनलाइन पहुंच: | https://doi.org/10.1088/1755-1315/408/1/012072 |
| स्वरूप: | इलेक्ट्रोनिक पुस्तक अध्याय |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=665119 |
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| 200 | 1 | |a Practical considerations on detectability of electrically active nanoparticles in environmental samples |f K. S. Brazovsky (Brazovskii), E. V. Larionova, S. Kim, S. V. Romanenko | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 17 tit.] | ||
| 330 | |a Environmental impact of nanotechnologies is among the most important global concerns because these technologies have introduced a completely new class of artificial pollutants with very diverse biological effects. Detection and characterization of nanoparticles in environmental samples requires highly sensitive methods and laboratory equipment. Recently introduced chronoamperometry of single nanoparticles has a potential to measure parameters of nanoparticles of different kinds, including organic and inorganic substances, metals and their oxides. This paper reports practical considerations on factors limiting the level of detection (LOD) for the chronoamperometry of single nanoparticles, successfully used to characterize electrically active nanoparticles. The influence of two major sources of electrical current noise on LOD was studied. It was shown that electrochemical noise dominates over the noise of electronic components. The LOD for a typical laboratory potentiostat was calculated. The overall background current noise (root mean square value) for a typical ultra-low input current potentiostat is between 10−3 - 10−12 A, that allows detecting silver nanoparticles with radius of 10-15 nm, LOD for nanoparticles of -Fe2O3 is 60-80 nm. The theoretical limit of minimum detectable size of nanoparticle is at least 10 times lower, but to achieve this limit very complicated technical issues should be resolved. | ||
| 461 | 1 | |0 (RuTPU)RU\TPU\network\2499 |t IOP Conference Series: Earth and Environmental Science | |
| 463 | |t Vol. 408 : Sustainable and Efficient Use of Energy, Water and Natural Resources |o 2nd International Scientific Conference 16–20 September 2019, Irkutsk Region, Russian Federation |o [proceedings] |v [012072, 6 p.] |d 2020 | ||
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| 701 | 1 | |a Brazovsky (Brazovskii) |b K. S. |c specialist in the field of electronics |c candidate of medical Sciences, associate Professor Tomsk Polytechnic University |f 1971- |g Konstantin Stanislavovich |3 (RuTPU)RU\TPU\pers\36870 |9 19899 | |
| 701 | 1 | |a Larionova |b E. V. |c chemist |c Associate Professor of Tomsk Polytechnic University, Candidate of chemical sciences |f 1978- |g Ekaterina Vladimirovna |3 (RuTPU)RU\TPU\pers\35096 | |
| 701 | 1 | |a Kim |b S. |g Sergey | |
| 701 | 1 | |a Romanenko |b S. V. |c specialist in the field of ecology and life safety |c head of the Department of Tomsk Polytechnic University, doctor of chemical Sciences |f 1972- |g Sergey Vladimirovich |3 (RuTPU)RU\TPU\pers\34932 |9 18250 | |
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