Severity: Warning
Message: file_get_contents(https://...@gmail.com&api_key=61f08fa0b96a73de8c900d749fcb997acc09&a=1): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
Filename: helpers/my_audit_helper.php
Line Number: 176
Backtrace:
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 176
Function: file_get_contents
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 250
Function: simplexml_load_file_from_url
File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3122
Function: getPubMedXML
File: /var/www/html/application/controllers/Detail.php
Line: 575
Function: pubMedSearch_Global
File: /var/www/html/application/controllers/Detail.php
Line: 489
Function: pubMedGetRelatedKeyword
File: /var/www/html/index.php
Line: 316
Function: require_once
A Knoevenagel condensation reaction paved the way for the development of the PTZ-BCN probe namely (z)-2-(1H-benzo[d]imidazole-2-yl)-3-(10-ethyl-10H-phenothiazin-3-yl) acrylonitrile. PTZ-BCN's spectral characteristics were verified through the application of IR, H NMR, C NMR, and HRMS techniques. The PTZ-BCN probe showed a high selectivity and sensitivity toward Hg ions over other interfering competing metal ions in CHCN: HEPES buffer (9:1, v/v) system. The addition of Hg results in a notable redshift and fluorescence quenching of the PTZ-BCN probe. An examination of the interaction between the PTZ-BCN probe and Hg involved recoding H NMR titration spectra, HRMS, DFT analysis, and Job's plot respectively. Quantification of the lowest detectable Hg concentration at 2.3 nM, exhibiting a correlation coefficient of R = 0.9985. PTZ-BCN probe has proven effective in quantitatively determining the existence of Hg in real-time water samples, test strips, solid state, and Hela living cells.
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Source |
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http://dx.doi.org/10.1016/j.saa.2024.125157 | DOI Listing |
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