Determination of the Migration of Methyl Methacrylate in Food Contact Materials by High Field Asymmetric Waveform Ion Mobility Spectrometry Technology†

doi:10.7503/cjcu20170558

Abstract

Abstract:

High field asymmetric ion mobility spectrometry(FAIMS) was applied to analyzing the migration of methyl methacrylate in water based food simulants without pretreatment processes, such as extraction or enrichment. By studying the influence of scanning times, sample temperature, sample volume, carrier gas flow-rate and solvent doping on the characteristic signal of methyl methacrylate, the detection limit of methyl methacrylate was determined to be 10 μg/L, and the relationship between the ion current intensity and the concentration of methyl methacrylate was established. The method proposed has the advantages of high sensitivity, easy operation and fast analysis, and can meet the requirements of practical work.

Key words: High field asymmetric waveform ion mobility spectrometry(FAIMS), Methyl methacrylate, Food contact material

CLC Number:

O656.31

TrendMD:

LAI Ying, LIN Rui, DONG Qingmu, HUANG Zongping, TU Xingpeng, LIN Weijing, SUN Weijia. Determination of the Migration of Methyl Methacrylate in Food Contact Materials by High Field Asymmetric Waveform Ion Mobility Spectrometry Technology^†[J]. Chem. J. Chinese Universities, 2018, 39(4): 660.

Figures/Tables 12

Scheme 1 Schematic diagram of the experiment procedure

Fig.1 FAIMS spectrum of 10 mg/L MMA in aqueous solution(positive ion mode)

Fig.2 Variation of ion current intensity(IC) of MMA with compensation voltage(CV) in positive ion mode under dispersion field strengths of 65%(A) and 85%(B)

Fig.3 Influence of scanning times on the determination of MMA

Fig.4 Variation of ion current intensity(IC) of MMA with sample temperature under 65% dispersion field strength

Fig.5 Influence of different sampling volumes on the monomer ion intensity of MMA

Fig.6 IC-CV diagrams of MMA at different flow rate of carrier gas under 85% dispersed field strengthFlow rate/(L·min-1): a. 1.5; b. 1.6; c. 1.7; d. 1.8; e. 1.9; f. 2.0.

Fig.7 Variation of ion current intensity(IC) of MMA with carrier gas flow rate under 65% dispersion field strength

Fig.8 Effect of ethanol doping on IC-CV diagram of MMA under 65% dispersed field strengtha. 20% Ethanol; b. 1 mg/L MMA in 20% ethanol; c. 1 mg/L MMA in water.

Fig.9 IC-CV diagrams of 10 μg/L MMA in aqueous solution at different dispersed field strengtha. DF85%; b. DF65%.

Fig.10 Variation of ion intensity of MMA with concentration in range of 0-10 mg/L(A) and 0.01-0.05 mg/L(B)

Fig.11 Variation of ion intensity of MMA with concentration of 0-10 mg/L under 65%dispersion field strength and CV of 0.21 V

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