The chemiluminescence determination of 2-chloroethyl ethyl sulfide using luminol–AgNO3–silver nanoparticles system

• (2-CEES) could inhibit the chemiluminescence of the luminol–AgNO3 system.
• 2-CEES was determined based on chemiluminescence quenching of luminol–AgNO3 system.
• The presented method is simple, convenient, rapid and sensitive.
• The presented method offer low LODs and good repeatability and recoveries.

A highly sensitive chemiluminescence (CL) method for the determination of 2-chloroethyl ethyl sulfide (2-CEES) was presented. It was found that 2-chloroethyl ethyl sulfide (2-CEES) could inhibit the CL of the luminol–AgNO3 system in the presence of silver nanoparticles in alkaline solution, which made it applicable for determination of 2-CEES. The presented method is simple, convenient, rapid and sensitive. Under the optimized conditions, the calibration curve was linear in the range of 0.0001–1 ng mL−1, with the correlation coefficient of 0.992; while the limit of detection (LOD), based on signal-to-noise ratio (S/N) of 3, was 6 × 10−6 ng mL−1. Also, the relative standard deviation (RSD, n = 5) for determination of 2-CEES (0.50 ng mL−1) was 3.1%. The method was successfully applied for the determination of 2-CEES in environmental aqueous samples.

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