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. 2020 Mar 17;10:4885. doi: 10.1038/s41598-020-61628-5

Table 2.

Performance data for the analysis of drugs of abuse (relative recovery in wastewater matrices, intra-day precision, and inter-day precision).

Compounds R2a Linearity range MDL MQL Recovery (n = 3) Precision, CV(n = 3)
[ng/L] Intra-day CV [%] Inter-day CV
[%] [%]
Low Medium High Low Medium High Low Medium High
D1b D2c D3d D1 D2 D3 D1 D2 D3 D1 D2 D3 D1 D2 D3 D1 D2 D3
6-AM 0.9901 1.0–1000 0.5 1.0 88.5 80.4 80.1 98.6 97.5 100.8 99.6 101.3 96.6 4.6 4.1 5.9 7.2 4.3 2.3 2.8 4.6 4.6 4.3 2.3 5.3
AMPH 0.9954 5.0–1000 1.0 5.0 98.7 100.0 104.4 112.2 93.4 106.4 103.7 99.8 93.8 3.8 3.5 3.5 2.4 5.6 3.4 4.6 2.6 3.3 2.7 5.3 2.6
BEC 0.9935 1.0–1000 0.1 0.5 98.3 88.9 102.8 106.2 101.8 100.6 98.9 99.1 102.0 3.1 2.8 4.4 2.9 3.9 2.6 3.7 3.3 1.4 3.7 4.9 4.5
KET 0.987 1.0–1000 0.1 0.3 91.8 94.7 99.3 95.6 101.9 99.4 101.0 100.5 102.6 3.8 4.2 4.2 2.6 4.8 3.9 4.5 4.3 5.3 4.9 4.3 3.4
MEPH 0.9916 5.0–1000 0.1 0.3 111.6 97.3 88.1 108.8 106.1 96.2 100.3 97.5 99.6 5.9 5.2 3.5 8.0 4.7 5.0 7.4 2.3 5.8 2.7 3.5 4.2
METH 0.9954 1.0–1000 0.1 1.0 98.8 93.8 103.1 115.6 118.9 115.3 101.2 105.8 102.0 5.2 5.6 5.4 7.2 5.4 3.1 6.2 4.8 5.9 4.7 5.9 5.6
MDA 0.9939 5.0–1000 2.0 5.0 103.4 98.6 105.0 119.2 117.6 118.9 118.9 119.4 114.9 6.3 2.6 2.9 8.1 7.1 3.7 1.8 1.1 4.8 3.6 1.6 3.5
MDMA 0.9944 1.0–1000 0.1 0.3 100.5 98.3 104.4 103.6 88.2 110.6 101.6 117.5 108.8 2.4 3.6 3.6 0.9 1.5 4.8 2.1 3.3 6.4 4.5 5.5 7.4
MDEA 0.9944 1.0–1000 0.3 0.5 112.5 112.9 113.2 113.3 117.1 117.0 116.4 117.1 111.0 5.5 2.3 2.1 5.6 3.2 7.8 2.5 2.1 2.4 2.6 1.5 2.2
THC-COOH 0.988 5.0–1000 1.0 3.0 96.7 103.9 115.6 86.1 95.9 112.7 103.9 98.7 82.4 3.4 4.4 4.4 4.5 2.3 3.3 2.4 4.9 8.1 3.1 4.9 5.1

aR2-Coefficient of determination, bD1-day 1, cD2-day 2, dD2-day 3.