Determination of organophosphate flame retardants Tris(2-chloroethyl) phosphine (TCEP) based on the luminol-H2 O2 chemiluminescence system.

Organophosphorus flame retardant (OPFRs) is a new type of environmental pollutant, and the rapid and sensitive detection of OPFRs is a very important job. A new experimental phenomenon was found that TCEP, a kind of organophosphorus flame retardant, can effectively enhance the signal of the luminol-H2 O2 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 μg/L to 100 μg/L (R2 = 0.999) with a low detection limit of 33 ng/L. The relative standard deviation (R.S.D.) was 2.2 % (n= 7, c= 100 μg/L). The water samples were labeled and recycled with RSDs of 1.1 % - 5.7 % and recoveries of 88.7 % - 116.1 %. Based on this, this study established a new CL detection method for environmental pollutant TCEP.