Table 4 Analysis of urine samples taken from workers of a petrochemical industry using two different extraction technique: DLLME-SFOD and SPE.

From: Solidified floating organic droplet microextraction coupled with HPLC for rapid determination of trans, trans muconic acid in benzene biomonitoring

Human urine samples

t,t-MA level (mg/g creatinine) MEAN ± SD, N = 3

DLLME-SFOD

SPE

1

1.20 ± 0.11

0.99 ± 0.08

2

1.46 ± 0.13

1.70 ± 0.80

3

1.64 ± 0.15

1.11 ± 0.12

4

0.81 ± 0.09

0.97 ± 0.06

5

0.54 ± 0.06

0.65 ± 0.05

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