Novel color standards for digital color analysis of optochemical sensor arrays

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

7 Цитирования (Scopus)

Аннотация

The indicator-based polymeric color standards for color referencing in digital color analysis (DCA) of optical chemical sensors (optodes) are proposed. In the novel standards, the colors referring to the actual absorption bands of the protonated and deprotonated forms of the indicator are mixed in constant proportions. The standards are based on the lipophilic pH-indicators: ETH5350 and ETH2439, commonly used in optodes, and the lipophilic electrolyte TBATBB. The dependence of the standard color on the TBATBB concentration in the optode is established and found to be linear. The standard colors remain unchanged upon varying the solution pH and the nature and the concentration of the electrolyte. Calibration curves of the indicator pH-optodes obtained in horse serum and referenced to the developed standards demonstrate lower error to span ratio, broader span and higher sensitivity as compared to the same data processed with the conventional gray standard. The colorimetric signal of the pH-optodes array measured in serum sample and referenced to the developed standards allowed accurate determination of the sample pH thus demonstrating practical prospects of the proposed color standards.

Язык оригиналаанглийский
Страницы (с-по)638-644
Число страниц7
ЖурналTalanta
Том197
Ранняя дата в режиме онлайн17 янв 2019
DOI
СостояниеОпубликовано - 15 мая 2019

Предметные области Scopus

  • Аналитическая химия
  • Химия (все)
  • Биохимия
  • Спектроскопия

Fingerprint

Подробные сведения о темах исследования «Novel color standards for digital color analysis of optochemical sensor arrays». Вместе они формируют уникальный семантический отпечаток (fingerprint).

Цитировать