Determination of organophosphate flame retardant tris(2‐chloroethyl)phosphine based on the luminol–H₂O₂ chemiluminescence system

Abstract

Organophosphorus flame retardants (OPFRs) are new types of environmental pollutants, therefore the rapid and sensitive detection of OPFRs is a very important objective. A new experimental phenomenon was found in which tris(2-chloroethyl) phosphine (TCEP), a type of OPFR, could effectively enhance the signal of the luminol-H 2 O 2 chemiluminescence (CL) system. Combined with the controllability of flow injection analysis, a rapid, stable, and sensitive CL method was established.The CL intensity responded linearly to the concentration of TCEP in the range 0.5-100 μg/L (R 2 = 0.999) with a low detection limit of 33 ng/L. Relative standard deviation (RSD) was 2.2% (n = 7, c = 100 μg/L). Water samples were labelled and recycled with RSDs of 1.1-5.7% and recoveries of 88.7-116.1%. Based on these results, this study established a new CL detection method for the environmental pollutant TCEP.

K+ Ion-Doped Mixed Carbon Nitride: A Daylight-Driven Photocatalyst and Luminophore for Enhanced Chemiluminescence

“…Luminol-based chemiluminescence (CL) system is well-known as one of the powerful methodologies for reactive oxygen species (ROS) because of its ability to produce strong CL emission. − However, as a classical CL system, the H 2 O 2 –luminol system is usually subject to the self-decomposition of H 2 O 2 , which affects its application to a certain extent, − while ROS are active in chemical reactions and could trigger luminol to produce intense CL emission. − Therefore, it is urgent to find a stable and controlled reactant in CL reaction. Hence, researchers turned their attention to the efficient generation process of ROS, especially nanomaterials. − For example, graphene oxide or carbon nitride treated by H 2 O 2 could form stable carbon radicals and ROS on the π bond of the lamellar structure and produce strong CL emission with luminol. , …”