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Table 2 Precisions (intra- and inter-day) and recoveries of BRs in O. sativa seedlings (1 g FW)

From: A selective pretreatment method for determination of endogenous active brassinosteroids in plant tissues: double layered solid phase extraction combined with boronate affinity polymer monolith microextraction

Analytes

Intraday precision (RSD, %, n = 4)

Interday precision (RSD, %, n = 3)

Recovery (%, n = 4)

Low (1 ng/g)

Medium (5 ng/g)

High (25 ng/g)

Low (1 ng/g)

Medium (5 ng/g)

High (25 ng/g)

Low (1 ng/g)

Medium (5 ng/g)

High (25 ng/g)

28-norBL

12.1

14.6

11.7

11.3

12.4

13.3

107.2

109.0

115.6

28-norCS

17.8

14.6

14.0

14.9

4.3

2.9

106.1

92.0

87.2

BL

16.7

13.3

14.8

10.2

5.0

6.1

117.6

85.3

105.2

CS

9.7

13.7

2.7

11.8

5.1

5.8

101.5

99.7

100.8

28-homoBL

11.0

9.5

2.6

14.4

4.2

14.3

79.0

87.1

97.9