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Table 4 Precision, recovery rate, linearity, LOD, and LLOQ data of the analytical procedure

From: Optimization and validation of a highly sensitive method for determining glyphosate in human urine by solid-phase extraction and liquid chromatography with tandem mass spectrometry: a methodological study

 

Concentration (μg/L urine)

n

Results

Absolute recovery rate

(%)

0.33

3

99.6

 

0.67

3

91.0

1.33

3

97.8

Within-run precision

(%RSD)

0.33

6

11.4

 

0.67

6

8.6

1.33

6

5.6

Between-run precision

(%RSD)

0.33

5

14.0

 

0.67

5

6.8

1.33

5

9.6

Calibration curve

 Slope

  

0.144

 Intercept

  

0.000

 r2

  

0.998

LOD (μg/L, S/N = 3)

  

0.1

LLOQ (μg/L)

  

0.3

  1. n number of observations, RSD relative standard deviation, LOD limit of detection, LLOQ lower limit of quantification, S/N signal-to-noise ratio
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Environmental Health and Preventive Medicine

ISSN: 1347-4715

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