Sensitive SERS assay for glyphosate based on the prevention of l-cysteine inhibition of a Au–Pt nanozyme

Abstract

Herein, an indirect SERS sensing assay was developed for determination of glyphosate (Gly) in tap water.

A pyrene-based ratiometric probe for nanomolar level detection of glyphosate in food and environmental samples and its application for live-cell imaging

“…Since glyphosate usually is not metabolized inside the human body, the amount of glyphosate present in human blood serum and/or urine samples might estimate the extent of its dietary exposure. 27 Analysis of suspected blood samples could reveal whether any glyphosate exposure occurred in the 2–3 days before testing or not. On the contrary, testing of urine samples could reveal whether there was any exposure in the last 2 to 3 weeks or not.…”

A dual-responsive nanozyme sensor with ultra-high sensitivity and ultra-low cross-interference towards metabolic biomarker monitoring

“…1J), which are typical of oxTMB. 28,29 Meanwhile, a new band at 1283 cm À1 , attributed to C-N stretching, 30 is observed for GNPs@MIL-53 upon the addition of caffeine. The enhancement factor was determined to be 2.68 Â 10 6 (Fig.…”

A photo-responsive p-Si/TiO2/Ag heterostructure with charge transfer for recyclable surface-enhanced Raman scattering substrates

“…Lastly, this TiO 2 /Ag heterostructure SERS substrate was used to detect glyphosate (N-(phosphonomethyl) glycine, C 3 H 8 NO 5 P: Gly), an effective broad-spectrum systemic herbicide increasingly used for the control of undesirable weeds in cultures. [25][26][27][28][29][30][31] In this study, a TiO 2 thin film was prepared by a sol-gel method and Ag nanoflowers were then electrodeposited on it. Compared with the typical reported preparation methods, such as hydrothermal synthesis, magnetron sputtering and vacuum evaporation, sol-gel is considered an effective and low-cost approach to obtain high performance films without complex equipment and strict conditions.…”