Determination of the Levels of Polycyclic Aromatic Hydrocarbons in Toasted Bread Using Gas Chromatography Mass Spectrometry

Table 2

Calibration characteristics of the 16 PAHs.

No	PAHs	Correl. Coeff. (𝑅^2)	Calibration range (pg/𝜇l)	𝑅𝑡 (min)	𝑚/𝑧	Reproducibility of the calibration curve (𝑛=4)
						100 (pg/𝜇l)	500 (pg/𝜇l)	1000 (pg/𝜇l)
						Rec. ± RSD (%)	Rec. ± RSD (%)	Rec. ± RSD (%)
1	Naphthalene (NA)	1.000	100–1000	8.957	128/130	106.46 ± 2.12	108.98 ± 9.52	97.63 ± 2.81
2	Acenaphthylene (ACL)	0.985	100–1000	12.599	152/154	92.88 ± 0.71	108.77 ± 9.31	97.86 ± 2.53
3	Acenaphthene (AC)	0.999	100–1000	13.040	153/154	105.79 ± 0.39	105.95 ± 6.48	98.52 ± 1.74
4	Fluorine (FL)	0.997	100–1000	14.236	166/168	98.90 ± 0.78	106.71 ± 7.26	98.33 ± 1.96
5	Phenanthrene (PHE)	0.992	100–1000	16.457	176/178	114.78 ± 1.76	108.29 ± 8.89	97.93 ± 2.45
6	Anthracene (AN)	0.990	100–1000	16.561	176/178	80.06 ± 1.65	107.79 ± 8.41	98.16 ± 2.18
7	Fluoranthene (FA)	0.986	100–1000	19.276	200/202	83.85 ± 1.63	108.69 ± 9.29	97.87 ± 2.52
8	Pyrene (PY)	0.988	100–1000	19.773	200/202	83.18 ± 1.76	107.68 ± 8.29	98.13 ± 2.21
9	Benz [a] anthracene (BaA)	0.991	100–1000	22.651	226/228	101.04 ± 1.80	109.32 ± 9.85	97.79 ± 2.60
10	Chrycene (CHR)	0.988	100–1000	22.741	226/228	113.08 ± 0.56	109.25 ± 9.77	97.69 ± 2.74
11	Benzo[b] fluoranthene (BbFA)	0.990	100–1000	25.057	250/252	73.54 ± 5.44	109.39 ± 9.94	97.82 ± 2.58
12	Benzo[k] fluoranthene (BkFA)	0.990	100–1000	25.106	250/252	80.55 ± 6.06	109.34 ± 9.88	97.87 ± 2.51
13	Benzo[a]Pyrene (BaP)	0.991	100–1000	25.697	250/252	107.62 ± 4.52	108.59 ± 9.14	98.16 ± 2.17
14	Indeno[1,2,3-cd] Pyrene (IP)	1.000	100–1000	28.449	276/278	108.90 ± 6.16	107.45 ± 8.02	98.42 ± 1.84
15	Dibenzo[ah]anthracene (DBahA)	1.000	100–1000	28.562	276/278	101.71 ± 9.79	108.77 ± 9.34	98.09 ± 2.24
16	Benzo[ghi]perylene (BghiP)	0.999	100–1000	29.180	276/278	113.14 ± 4.45	107.33 ± 7.89	98.28 ± 2.02

Correl. coeff: correlation coefficient; 𝑅_𝑡: retention time; 𝑚/𝑧: mass/ion ratio; Rec.: recovery; RSD: relative standard deviations.