Determination of short-chain chloroparaffins in synthetic surfacing layers used in sports and diluents by solid-phase extraction coupled with gas chromatography-negative chemical ionization-mass spectrometry

doi:10.3724/SP.J.1123.2018.05002

Abstract

Abstract:

A new method was established to determine short-chain chloroparaffins (SCCPs) in synthetic surfacing layers used in sports and diluents by solid-phase extraction (SPE) coupled with gas chromatography-negative chemical ionization-mass spectrometry (GC-NCI-MS). The analysis conditions for gas chromatography and mass spectrometry were optimized. Then, the samples were extracted by ultrasonication, purified on a Florisil SPE column, monitored in the selective ion monitoring (SIM) scanning mode, and quantified by the external standard method. With this method, a good linear relationship was found over a wide mass concentration range from 0.0501 to 100.17 mg/L, with a linear correlation coefficient (R²) of 0.9995. The detection limit for SCCPs by this method was found to be as low as 0.50 μg/g (i. e. 0.000050%) and the average recoveries for SCCPs spiked in the blank samples varied from 83.2% to 96.3% with relative standard deviations (RSDs) of 1.56%-6.02%. Ten batches of samples were tested and the contents of SCCPs detected in each batch were in the range from 0.016% to 0.55%, which agrees well the European Union limitation requirement for SCCPs. Thus, this method is suitable for qualitative and quantitative analyses of SCCPs in synthetic surfacing layers used in sports and diluents.

Key words: diluents, gas chromatography-negative chemical ionization-mass spectrometry (GC-NCI-MS), short-chain chloroparaffins (SCCPs), solid-phase extraction (SPE), synthetic surfacing layers used in sports

CLC Number:

O658

HUANG Shaojun, DU Ping, LIU Chunxia, YANG Jun, YANG Chaofen, SUN Hui, HUANG Qiuling. Determination of short-chain chloroparaffins in synthetic surfacing layers used in sports and diluents by solid-phase extraction coupled with gas chromatography-negative chemical ionization-mass spectrometry[J]. Chinese Journal of Chromatography, 2018, 36(10): 1022-1027.

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