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Table 2 Recovery and reproducibility results for determination of parabens achieved for two real samples

From: Chromium-based metal organic framework for pipette tip micro-solid phase extraction: an effective approach for determination of methyl and propyl parabens in wastewater and shampoo samples

Analyte added Sample Analyte added (µg/L) Analyte found (µg/L) Recovery RSD% (n = 3)
MP Wastewater
20 19.3 96.5 1.6
85 86.0 101.1 1.4
140 134.0 95.7 3.6
MP Shampoo  
20 20.0 100.0 4.1
85 87.0 102.3 3.4
140 134.6 96.1 2.2
PP Wastewater
20 20.0 100.0 2.1
85 81.6 96.0 2.4
140 135.0 96.4 1.9
PP Shampoo
20 20.0 100.0 1.1
85 86.6 101.9 1.3
140 133.5 95.4 2.3