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Table 2 Comparison of the buffered and unbuffered extraction strategies

From: Evaluation and statistical analysis of the modified QuEChERS method for the extraction of pinoxaden from environmental and agricultural samples

Sample

Spiking level (μg/g, μg/mL)

μg found

Average % recovery ± SD

Unbuffered

Acetate buffered

Citrate buffered

Unbuffered

Acetate buffered

Citrate buffered

Soil

1.0

0.79

1.08

0.92

84 ± 5

102 ± 5

93 ± 3

1.0

0.84

0.98

0.91

1.0

0.89

1.01

0.97

Wheat grains

1.0

0.93

1.11

0.89

93 ± 4

102 ± 8

93 ± 5

1.0

0.88

0.94

0.91

1.0

0.97

1.02

0.98

Water

1.0

0.76

1.01

0.95

83 ± 10

99 ± 2

94 ± 6

1.0

0.79

0.98

0.99

1.0

0.94

0.97

0.87