Sample

Actual Description/site

Estrone

% Recovery/

17-estradiol

% Recovery/

no

 

(ng/L)

Accuracy

(ng/L)

Accuracy

 

 

 

 

 

 

1

Darvill influent/raw

39

 

57

 

2

Darvill inflent/raw duplicate

45

 

57

 

 

mean

42

 

57

 

 

SD#

4

 

0

 

 

RSD%*

10

 

0

 

 

 

 

 

 

 

3

Darvill influent/raw spiked

78

180

70

65

 

 

 

 

 

 

4

Darvill effluent/ final

13

 

22

 

5

Darvill effluent/final duplicate

18

 

14

 

 

mean

16

 

18

 

 

SD

4

 

6

 

 

RSD%

25

 

33

 

 

 

 

 

 

 

6

Darvill effluent/final spiked

34

90

41

115

 

 

 

 

 

 

7

Duzi upstream Darvill

3

 

3

 

8

Duzi upstream Darvill spiked

13

50

34

155

 

 

 

 

 

 

9

Duzi downstream Darvill

5

 

5

 

10

Duzi downstream Darvill spiked

10

25

22

85

 

 

 

 

 

 

11

Pilot plant permeate/final

34

 

7

 

12

Pilot plant permeate/final duplicate

29

 

11

 

 

mean

32

 

9

 

 

SD

4

 

3

 

 

RSD%

13

 

33

 

 

 

 

 

 

 

 

Overall means

precision

accuracy

precision

accuracy

 

 

10

180

0

65

 

 

25

90

33

115

 

 

13

50

33

155

 

 

 

25

 

85

 

mean

16

86

22

105

 

SD

8

68

19

39

#RSD = relative standard deviation
*SD   = standard deviation
Table 4: Accuracy check of the ELISA test
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